100 Free Tech+ FC0-U71 Practice Questions and Answers
100 questions for the Tech+ FC0-U71 exam, each answer explained. Watch it here, try the questions yourself, or read the transcript.
Questions in this video
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Question 1 Play from 00:00
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Why A is wrong
A constant is set once and cannot be changed, so it cannot be refreshed.
Right, B is the answer.
Why B is right
A variable is a named place in memory whose contents can change while the program runs, which fits a value that gets refreshed over time. A constant stays fixed, a loop only repeats instructions, and a sequence is just the order in which steps run.
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Why C is wrong
A sequence describes the order of steps and does not store anything.
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Why D is wrong
A loop repeats instructions; it does not hold a value.
Question 2 Play from 01:28
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Why A is wrong
Flat files suit one simple layout, not many different kinds of data.
Right, B is the answer.
Why B is right
With only a little data, a flat file has almost no overhead, so reading and writing it is quick. It does not grow well, it struggles when several people edit at once, and it is not suited to mixed or complex data.
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Why C is wrong
Performance drops as the file grows, so it scales poorly.
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Why D is wrong
Several people editing one file at the same time causes conflicts.
Question 3 Play from 02:49
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Why A is wrong
A query asks the database for data and does not define a rule for a field.
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Why B is wrong
That is a kind of database, not a rule applied to a single field.
Right, C is the answer.
Why C is right
A primary key is the field that gives every row its own identity, so the database blocks any repeated value in it. That matches the unique identifier field described.
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Why D is wrong
A schema describes the whole database layout, not one unique field.
Question 4 Play from 04:06
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Why A is wrong
A comment is a note for human readers and never runs.
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Why B is wrong
Integrating means joining systems or parts together, not repeating instructions.
Right, C is the answer.
Why C is right
A loop runs the same instructions over and over until its stopping condition is met, which is how code repeats work. Structures such as for and while loops are the standard way to automate repeated tasks.
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Why D is wrong
A branch picks one path based on a condition, without repeating anything.
Question 5 Play from 05:26
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Why A is wrong
It lets a technician control someone else's computer and is not meant for group meetings.
Right, B is the answer.
Why B is right
Conferencing software is built for live online meetings, with audio, video, and often screen sharing for several people at once.
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Why C is wrong
A browser views websites and does not host meetings.
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Why D is wrong
It gives people access to shared files but offers no live meeting.
Question 6 Play from 06:44
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Why A is wrong
Productivity software such as office apps helps people do their own work and offers no remote control.
Right, B is the answer.
Why B is right
Remote assistance software lets a technician reach and operate a user's computer across a network, including over a VPN, to diagnose and repair problems.
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Why C is wrong
Collaboration tools support teamwork and messaging, not control of another machine.
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Why D is wrong
A browser views web content and cannot take over a laptop.
Question 7 Play from 08:06
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Why A is wrong
It is a small portable device with no redundancy, and it is easy to lose or break.
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Why B is wrong
It sits in one location, so fire, theft, or hardware failure can make it unavailable.
Right, C is the answer.
Why C is right
Cloud storage keeps copies on redundant servers in several locations, and team members can reach the files from anywhere, so the data stays available even if one device or site fails. The other choices sit on a single device or in one place.
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Why D is wrong
It is a single physical device that can fail or be misplaced, and it works only when plugged in.
Question 8 Play from 09:35
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Why A is wrong
A permissions problem would block the user from every location, not only near the kitchen.
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Why B is wrong
Speed issues slow a connection down; they do not stop it altogether.
Right, C is the answer.
Why C is right
Kitchen appliances such as microwave ovens give off signals in the same 2.4GHz range many Wi-Fi networks use, and that can disrupt or block the connection. The trouble began exactly when the seat moved close to the kitchen, which points to interference.
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Why D is wrong
An outdated standard would have caused trouble at the old desk too, and moving does not change it.
Question 9 Play from 11:06
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Why A is wrong
It only trims the cable and cannot fasten a connector.
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Why B is wrong
It seats wires into wall jacks and patch panels, not into RJ45 plugs.
Right, C is the answer.
Why C is right
A crimper squeezes the RJ45 connector onto the wires at the end of the cable so it makes firm contact. The other tools cut the cable, seat wires in a jack or panel, or check a finished cable.
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Why D is wrong
It checks a finished cable but does not attach connectors.
Question 10 Play from 12:25
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Why A is wrong
It scrambles contents to protect them; it does not bundle files together.
Right, B is the answer.
Why B is right
Compression shrinks files and folders and bundles them into one archive, which is what a ZIP file is. Encryption hides content, permissions manage access, and compilation turns code into programs.
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Why C is wrong
It turns source code into a runnable program.
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Why D is wrong
They decide who may open or change files; they do not combine them.
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Question 11 Play from 13:50
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Why A is wrong
Checking that the system works happens near the end, after the fix is applied.
Right, B is the answer.
Why B is right
Once a theory about the probable cause exists, the technician must test it to confirm it before doing anything else. Only after that can a plan be written and carried out.
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Why C is wrong
Documentation is the last step, after the problem is solved.
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Why D is wrong
Planning follows a confirmed theory, so it cannot come first.
Question 12 Play from 15:09
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Why A is wrong
A standard user account is limited and cannot install system-wide software, which is why the install failed.
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Why B is wrong
That describes one way of proving identity, not a level of permission.
Right, C is the answer.
Why C is right
Installing software changes protected parts of the system, so it needs elevated rights, which Administrator accounts carry. The denial shows the current account lacks those rights.
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Why D is wrong
That principle limits rights to the minimum needed, so it would keep blocking the install.
Question 13 Play from 16:35
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Why A is wrong
A terabit per second is a trillion bits per second, far above bps.
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Why B is wrong
A megabit per second is a million bits per second, much larger than bps.
Right, C is the answer.
Why C is right
Each metric prefix multiplies the rate by a large factor: mega, giga, then tera. Plain bits per second is the base unit, so it is the smallest and slowest of the four.
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Why D is wrong
A gigabit per second is a billion bits per second, much larger than bps.
Question 14 Play from 17:52
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Why A is wrong
POP downloads email from a mail server and is not used for web pages.
Right, B is the answer.
Why B is right
HTTPS is ordinary web traffic wrapped in TLS encryption, which protects logins and payment details on shopping sites. The other three protocols carry email, not web pages.
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Why C is wrong
SMTP sends email between servers and is not used for web pages.
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Why D is wrong
IMAP is a mail access protocol; it does not carry web pages.
Question 15 Play from 19:17
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Why A is wrong
That is roughly 0.002TB, tiny next to 20TB.
Right, B is the answer.
Why B is right
Putting everything in terabytes makes it easy: 20TB stays 20, 2,000GB is only 2TB, 2,000KB is about 0.002TB, and 200MB is about 0.0002TB. So 20TB is the largest by a wide margin.
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Why C is wrong
That equals 2TB, only a tenth of 20TB.
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Why D is wrong
That is about 0.0002TB, the smallest value in the list.
Question 16 Play from 20:43
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Why A is wrong
It lets someone connect to the machine, but it does not itself control which process uses the CPU.
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Why B is wrong
It deals with installing, updating, and removing programs, not live CPU load.
Right, C is the answer.
Why C is right
Process management tools show every running process and how much processor time each one uses, and they let you end or adjust the one hogging the CPU. This tackles the 90% symptom directly.
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Why D is wrong
It handles drives and partitions, which is unrelated to processor usage.
Question 17 Play from 22:09
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Why A is wrong
A report presents data in a formatted layout, but it is not the function that pulls the records.
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Why B is wrong
Create makes new entries or structures; it does not look up existing ones.
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Why C is wrong
Import loads outside data into the database.
Right, D is the answer.
Why D is right
A query asks the database for the records that match a condition, such as a recent change date, and returns them. Creating adds new data, importing loads data from elsewhere, and a report formats results for reading.
Question 18 Play from 23:30
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Why A is wrong
It stores decimals, and a count of people never has a fractional part.
Right, B is the answer.
Why B is right
A headcount is always a whole number with no fraction, which is exactly what an integer holds. Floats are for decimals, Booleans for yes or no, and Char for a single character.
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Why C is wrong
It holds a single character, not a number to count with.
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Why D is wrong
It stores only true or false, not a quantity.
Question 19 Play from 24:44
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Why A is wrong
That is lower than 4.4GHz.
Right, B is the answer.
Why B is right
A gigahertz is a thousand megahertz, so 4.4GHz equals 4,400MHz. That beats 3.1GHz, and both megahertz figures are tiny by comparison.
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Why C is wrong
That is about 0.0012GHz, thousands of times slower.
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Why D is wrong
That is only 0.0055GHz; the larger-looking number is misleading because the unit is far smaller.
Question 20 Play from 26:08
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Why A is wrong
A fixed schema is typical of relational databases; non-relational ones are flexible about structure.
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Why B is wrong
It links tables together, which is a relational design feature.
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Why C is wrong
It is the unique row identifier in a relational table, a relational feature.
Right, D is the answer.
Why D is right
Non-relational databases often store records as key/value pairs, which lets each order hold flexible fields without a fixed table layout.
Question 21 Play from 27:28
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Why A is wrong
This describes how roles are split between a serving machine and the machines using it. It says nothing about how close the computers are.
Right, B is the answer.
Why B is right
LAN stands for local area network. It ties together computers that sit near each other, such as within one office, building, or campus. That closeness is what defines the term.
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Why C is wrong
A MAC address is a hardware identifier built into a network card. It is not a type of network.
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Why D is wrong
This describes devices acting as equals and sharing with each other. It does not mean the devices are physically close.
Question 22 Play from 28:59
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Why A is wrong
A switch links devices inside a local network and passes frames using hardware addresses. Blocking traffic is not its main purpose.
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Why B is wrong
A router moves packets between separate networks. Controlling which traffic is allowed is a side feature, not its main job.
Right, C is the answer.
Why C is right
A firewall exists to decide which traffic may pass and which must be stopped, using a set of security rules. Routers, switches, and access points mainly move or deliver data, so any filtering they do is secondary.
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Why D is wrong
An access point gives wireless devices a way onto the network. Filtering traffic is not why it exists.
Question 23 Play from 30:38
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Why A is wrong
VGA carries a video signal to a display. It is not used to move files to a phone.
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Why B is wrong
NFC is a short-range wireless technology, not a cable, and it is too limited for moving a large music library.
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Why C is wrong
Thunderbolt is a fast interface found mainly on certain laptops and is not the usual link between a phone and a computer.
Right, D is the answer.
Why D is right
USB-C is the common connector on current phones and computers, and it carries both charging power and file data. That makes it the natural choice for copying music to a phone.
Question 24 Play from 32:05
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Right, A is the answer.
Why A is right
Critical data is the information a company needs to keep operating from one day to the next. If it were lost or unreachable, normal work would stall. The other terms describe size, relationships, or revenue, not dependence.
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Why B is wrong
Big data refers to very large and complex collections of data. It says nothing about how essential the data is.
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Why C is wrong
Correlated data means data sets that show a statistical link to each other, not data the business depends on.
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Why D is wrong
Monetized data is data that is sold or otherwise used to earn income.
Question 25 Play from 33:31
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Why A is wrong
A report presents data that is already stored in the database. It does not bring new data in.
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Why B is wrong
A query pulls out data that is already in the database. It does not read in an outside file.
Right, C is the answer.
Why C is right
Import reads data from an outside source, such as a flat file, and places it into the database tables. Creating builds structures, querying looks up stored data, and reporting formats stored data for display.
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Why D is wrong
Create builds a new database object such as a table. It does not fill it from an existing file.
Question 26 Play from 34:56
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Right, A is the answer.
Why A is right
Looping repeats a set of instructions until a chosen condition is satisfied. For loops and while loops are familiar examples, and each one checks a condition to decide whether to go around again.
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Why B is wrong
Sequencing means instructions run one after another in order. Nothing in it repeats.
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Why C is wrong
Exception handling deals with errors and unexpected events. It is not about repeating steps.
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Why D is wrong
Branching picks one path or another based on a condition, such as an if statement. It does not repeat code.
Question 27 Play from 36:20
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Why A is wrong
A keyboard is an input device. It takes typed text and commands from the user.
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Why B is wrong
A microphone is an input device. It picks up sound and sends it to the computer.
Right, C is the answer.
Why C is right
A smart TV takes signals from a computer and shows them as pictures and video, so it presents information to the user. The keyboard, microphone, and web camera all work in the opposite direction by collecting data to send in.
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Why D is wrong
A web camera is an input device. It records video and passes it to the computer.
Question 28 Play from 37:43
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Why A is wrong
Cookies keep site preferences and session details. They do not give a full picture of what pages were viewed.
Right, B is the answer.
Why B is right
Browser history keeps a running list of the pages a person has opened on that device. That makes it the most direct way to see whether inappropriate sites were visited.
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Why C is wrong
Location tracking shows where a device is. It does not show which online content was viewed.
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Why D is wrong
System logs record operating system and application events. They do not list the websites that were visited.
Question 29 Play from 39:10
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Why A is wrong
Removing complexity rules makes passwords easier to guess, which lowers security.
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Why B is wrong
This is not a standard security step after setup, and sharing identical admin credentials across servers adds risk.
Right, C is the answer.
Why C is right
Default accounts and passwords are publicly documented, so attackers try them first. Replacing them right after setup closes that easy way in. The other choices either do nothing for security or make the server weaker.
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Why D is wrong
Leaving the most powerful account without a password takes away a key protection.
Question 30 Play from 40:48
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Why A is wrong
Availability is about being able to reach resources when needed. Nothing here blocks access to anything.
Right, B is the answer.
Why B is right
Privacy is a person's right to decide who can see details about their own life. Publishing someone's birth date and home address in an open forum exposes personal information they never agreed to share.
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Why C is wrong
Integrity means data stays accurate and unaltered. Posting facts does not change the data.
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Why D is wrong
Confidentiality is about keeping information from unauthorized parties in general. This scenario is specifically about exposing personal details of individuals.
Question 31 Play from 42:16
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Why A is wrong
A webcam captures video for communication and is not built to track health measurements.
Right, B is the answer.
Why B is right
A smartwatch is worn on the wrist and has sensors that keep measuring things like pulse, movement, and sleep all day. That constant tracking matches what the center wants. The other devices have no health sensors.
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Why C is wrong
An e-reader is meant for reading books and documents, not for tracking health.
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Why D is wrong
A scanner turns paper into digital files and does not track a person's health.
Question 32 Play from 43:37
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Why A is wrong
A float holds numbers with decimal parts, which makes no sense for a phone number.
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Why B is wrong
A char holds a single character, so it cannot store a full phone number.
Right, C is the answer.
Why C is right
Phone numbers are identifiers, not quantities, so they are kept as text. A string can hold dashes, parentheses, spaces, extensions, and leading zeros exactly as entered.
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Why D is wrong
An integer cannot hold symbols such as dashes or plus signs, and it drops any leading zeros.
Question 33 Play from 44:57
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Right, A is the answer.
Why A is right
A function packages instructions for one task so they can be called whenever needed, saving the programmer from rewriting them. Methods are similar but tied to objects, so function is the broader and better answer.
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Why B is wrong
Arrays are structures that hold a collection of values, not blocks of code.
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Why C is wrong
Variables hold values. They do not carry out a task.
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Why D is wrong
Methods are functions that belong to an object, so they are a narrower case. The general term for reusable code is function.
Question 34 Play from 46:19
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Why A is wrong
The theory was already confirmed when the fix worked and the test page printed.
Right, B is the answer.
Why B is right
Once the fix is in and a test page shows everything works, the last step is to write down what was found and done. That record helps colleagues if the same problem returns.
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Why C is wrong
The problem is already solved, so there is nothing left to escalate.
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Why D is wrong
The repair has already been carried out, so this step is finished.
Question 35 Play from 47:46
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Right, A is the answer.
Why A is right
A petabyte is 10 to the 15th bytes. Going up the scale from megabyte to gigabyte to terabyte to petabyte, each step is 1,000 times bigger, so the petabyte tops this list.
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Why B is wrong
A terabyte is 10 to the 12th bytes, which is 1,000 times smaller than a petabyte.
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Why C is wrong
A gigabyte is only 10 to the 9th bytes, far below a petabyte.
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Why D is wrong
A megabyte is 10 to the 6th bytes, the smallest unit in the list.
Question 36 Play from 49:03
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Right, A is the answer.
Why A is right
A firewall applies rules to network connections coming in and going out. It can be set to refuse incoming file sharing requests, which is exactly what the employee needs.
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Why B is wrong
Certificates support encryption and identity checks, but they do not block incoming file sharing connections.
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Why C is wrong
Anti-malware finds and removes harmful software. It does not manage which network connections are allowed.
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Why D is wrong
Multifactor authentication confirms who a user is. It does not control incoming network connections.
Question 37 Play from 50:33
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Why A is wrong
A chatbot is built for conversation, not for producing marketing material.
Right, B is the answer.
Why B is right
Generative AI makes brand new content such as text, images, and other media from a prompt. That ability lets it produce a fresh first draft of an advert.
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Why C is wrong
Predictive AI forecasts outcomes from past data. It does not create new ads.
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Why D is wrong
Assistive AI helps people finish tasks faster, but it is not meant for making new content such as ads.
Question 38 Play from 51:54
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Why A is wrong
Data capture is the first gathering of information, not selling it on.
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Why B is wrong
Data analytics studies data to find insights. It does not involve selling it to outsiders.
Right, C is the answer.
Why C is right
Data monetization means turning data into money or other business value. Selling customer email addresses to outside companies is a clear example of earning income from collected data.
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Why D is wrong
Data correlation looks for links between data points. It is not about selling data.
Question 39 Play from 53:15
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Why A is wrong
Cable internet comes in over coaxial wiring with F-type connectors, not SFP.
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Why B is wrong
DSL runs over phone lines with RJ11 connectors, not SFP.
Right, C is the answer.
Why C is right
SFP stands for small form-factor pluggable. These swappable modules carry light signals over optical cable, so they belong to fiber connections. None of the other services use them as a standard interface.
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Why D is wrong
Cellular service uses radio antennas and SIM cards rather than SFP modules.
Question 40 Play from 54:40
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Why A is wrong
Terabytes are far too large for phone memory and are used for big storage drives.
Right, B is the answer.
Why B is right
Phone memory is normally listed in gigabytes, with current models often carrying several GB. That makes GB the standard unit for the figure.
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Why C is wrong
Kilobytes are far too small for phone memory and suit tiny files.
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Why D is wrong
Megabytes are below what current phones carry. Only very old devices had memory sized in them.
Question 41 Play from 55:55
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Why A is wrong
Compression only makes a file smaller and does nothing to stop someone from opening it.
Right, B is the answer.
Why B is right
Encryption scrambles the contents of a file so it can only be read with the right key. Even if someone copies the file, they cannot make sense of it. The other choices do not lock anyone out.
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Why C is wrong
Scanning looks for threats such as malware, but it does not block people from reading the file.
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Why D is wrong
A backup is a spare copy kept for recovery, and it does not restrict who can read the original.
Question 42 Play from 57:22
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Why A is wrong
A third-party vendor resells or redistributes software made by someone else, not the maker itself.
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Why B is wrong
An app store is a shared marketplace for apps, not the manufacturer's own download page.
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Why C is wrong
SaaS means software delivered as an online service, which is not the same as downloading a device driver.
Right, D is the answer.
Why D is right
OEM stands for original equipment manufacturer, the company that built the device. When a driver comes straight from the maker's own website, the source is the OEM.
Question 43 Play from 58:50
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Why A is wrong
The beginning of a flowchart is drawn as an oval or rounded shape, not a diamond.
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Why B is wrong
The end of a flowchart uses an oval or rounded shape, just like the start.
Right, C is the answer.
Why C is right
A diamond marks a point where the path splits depending on an answer, such as yes or no. It is the standard symbol for a decision in a flowchart.
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Why D is wrong
A regular action or step is drawn as a rectangle.
Question 44 Play from 1:00:00
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Why A is wrong
Octal only uses the digits zero through seven.
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Why B is wrong
Binary only uses the digits zero and one.
Right, C is the answer.
Why C is right
Hexadecimal counts in base sixteen. It needs sixteen symbols, so it uses the ten digits and then the letters A to F for the values ten to fifteen.
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Why D is wrong
Decimal uses the digits zero through nine and no letters.
Question 45 Play from 1:01:15
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Right, A is the answer.
Why A is right
A UPS has a battery that takes over the moment power is lost. That gives each computer a few minutes to save work and shut down safely.
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Why B is wrong
Cloud storage needs a running computer and network connection, so it cannot keep a powerless workstation on.
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Why C is wrong
A file server also loses power in an outage, and it does not keep the workstations running.
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Why D is wrong
An external drive stores data but supplies no power, so the computer still shuts off at once.
Question 46 Play from 1:02:35
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Why A is wrong
A backup policy is about protecting data over time and has no effect on opening a file right now.
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Why B is wrong
Compression affects how much space a file takes, not which program opens it.
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Why C is wrong
Permissions decide who may access a file, but they do not tell the system what type of file it is.
Right, D is the answer.
Why D is right
The extension at the end of a file name tells the operating system what kind of file it is. The system uses that to pick the program that opens it and to treat the contents correctly.
Question 47 Play from 1:03:57
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Right, A is the answer.
Why A is right
Process management is the part of the operating system that schedules running programs. It hands out processor time and memory and decides which program goes first.
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Why B is wrong
Device management deals with hardware such as drivers and peripherals, not ranking programs.
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Why C is wrong
Application management covers installing, updating and removing software, not sharing out resources.
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Why D is wrong
Access management controls who is allowed to use what, not how resources are split between programs.
Question 48 Play from 1:05:20
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Why A is wrong
Octal uses digits zero through seven, so it is not limited to ones and zeros.
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Why B is wrong
Decimal uses the digits zero through nine.
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Why C is wrong
Hexadecimal uses the digits zero through nine plus the letters A to F.
Right, D is the answer.
Why D is right
Binary is the only system built entirely from ones and zeros. Nine is written as 1001 in binary, which is how computers store values.
Question 49 Play from 1:06:39
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Why A is wrong
Scale describes how large or capable a system can grow, not a way to look up records.
Right, B is the answer.
Why B is right
A query is a request that asks the database for specific data that matches given conditions. It lets the analyst filter and return just the records needed.
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Why C is wrong
Input means putting data into a system, which is the opposite of pulling it out.
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Why D is wrong
Big data refers to very large collections of data, not a tool for fetching particular records.
Question 50 Play from 1:07:53
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Why A is wrong
A speaker plays sound out from the computer, so it is an output device.
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Why B is wrong
A printer puts digital content onto paper, so it is an output device.
Right, C is the answer.
Why C is right
A scanner reads a paper document or picture and turns it into digital data for the computer. Anything that sends information in from the outside is an input device.
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Why D is wrong
The motherboard is the internal board that connects components, not a device that brings in data.
Question 51 Play from 1:09:04
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Why A is wrong
Two bits is far too small to make a byte.
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Why B is wrong
Four bits is half a byte and is known as a nibble.
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Why C is wrong
Sixteen bits equals two bytes, not one.
Right, D is the answer.
Why D is right
By definition, one byte holds eight bits. This is the basic unit used to measure storage and memory.
Question 52 Play from 1:10:05
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Why A is wrong
The provider cannot fix this, since the problem is who has the Wi-Fi password and the family controls that.
Right, B is the answer.
Why B is right
Setting a new Wi-Fi password cuts off the unknown devices and keeps anyone who lacks the new password from joining. The family can do this themselves in a few minutes.
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Why C is wrong
A smaller range does not remove devices already connected, and nearby intruders could still join.
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Why D is wrong
A factory reset wipes all settings and brings back the default password, which could leave the network just as open.
Question 53 Play from 1:11:38
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Why A is wrong
An array holds a list of several values, not one fixed value.
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Why B is wrong
An object bundles data with actions, and its contents are not required to stay fixed.
Right, C is the answer.
Why C is right
A constant holds a value that stays fixed for the whole run of the program. A value that never changes is exactly what a constant is.
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Why D is wrong
A variable is made so that its value can change as the program runs.
Question 54 Play from 1:12:51
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Why A is wrong
Compiled languages are written as ordinary program statements and turned into machine code.
Right, B is the answer.
Why B is right
Markup languages, like the one used to build web pages, wrap content in tags that label its structure and meaning. They describe content rather than carry out instructions.
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Why C is wrong
Query languages use commands to ask databases for data, not tags.
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Why D is wrong
Assembly uses short machine-level instructions, not tags.
Question 55 Play from 1:14:06
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Why A is wrong
Choosing a wireless channel affects performance and can wait until the router is secured.
Right, B is the answer.
Why B is right
A new router ships with a known factory password that anyone can look up. Replacing it first keeps strangers from taking over the device while the rest is set up.
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Why C is wrong
Gateway details are ordinary network settings that can be handled after the login is secured.
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Why D is wrong
Addressing can be set after the router is protected with a new password.
Question 56 Play from 1:15:25
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Right, A is the answer.
Why A is right
Databases are designed with organized tables, indexes for quick searching, and a query language for pulling data. Flat files are plain and simple, so they lack those abilities.
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Why B is wrong
For small amounts of data a simple flat file is usually easier and lighter. Databases pay off as data grows.
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Why C is wrong
Relational designs link multiple tables, which is a database feature. A flat file is just one plain table or text file.
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Why D is wrong
Query languages belong to databases. Flat files have no built-in way to run queries.
Question 57 Play from 1:17:17
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Why A is wrong
Clearing the cache removes stored page data and does not stop a link from opening a window.
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Why B is wrong
A private window only skips saving history and does not block links.
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Why C is wrong
Accessibility options change how pages look or are read aloud, not whether links open.
Right, D is the answer.
Why D is right
Many reports open in a new window or tab, and a pop-up blocker can quietly stop that from happening. Allowing pop-ups for the site lets the link work.
Question 58 Play from 1:18:37
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Why A is wrong
Plaintext is data that is not encrypted at all, so it gives no protection.
Right, B is the answer.
Why B is right
File-level encryption locks the files or folders saved on a disk. This protects data at rest, so a stolen drive still cannot be read.
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Why C is wrong
HTTPS protects web traffic while it travels, not files sitting on a disk.
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Why D is wrong
A VPN protects data as it moves over a network, not data kept in storage.
Question 59 Play from 1:19:53
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Why A is wrong
Browser history lists pages visited and says nothing about whether the server accepted a login.
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Why B is wrong
A firewall filters network traffic and does not keep track of who logged in to the web server.
Right, C is the answer.
Why C is right
Account logs record each sign-in attempt, whether it worked or failed, and when it happened. Reading them shows if the web server accepted that person.
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Why D is wrong
Permissions describe what a person may do after signing in, not whether the sign-in succeeded.
Question 60 Play from 1:21:15
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Why A is wrong
Input devices send information into the computer, but a printer sends information out.
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Why B is wrong
Storage devices keep data for later use, while a printer only produces a paper copy.
Right, C is the answer.
Why C is right
A printer takes digital information from the computer and turns it into something on paper. Devices that present results to the user are output devices.
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Why D is wrong
Processing is done by the CPU, and a printer does not carry out that work.
Question 61 Play from 1:22:27
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Why A is wrong
Cable is quicker than DSL but still tops out below what fiber can deliver.
Right, B is the answer.
Why B is right
Fiber sends data as pulses of light through glass strands, which gives it far more capacity than the other home options. Plans of a gigabit and beyond are common, with very little delay. It is not offered everywhere, but where it exists it is the quickest choice.
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Why C is wrong
Satellite signals travel a long way, so delay is high and speeds are modest.
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Why D is wrong
DSL runs over old phone lines and is slower than both cable and fiber.
Question 62 Play from 1:23:55
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Right, A is the answer.
Why A is right
A GPU is a chip that does heavy calculation, especially graphics work that can be split into many small tasks at once. Because its job is to crunch data, it belongs in the processing category, not with devices that take data in, show it, or keep it.
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Why B is wrong
Input devices such as keyboards bring data in, while a GPU works on data it already has.
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Why C is wrong
Storage holds data over time, while a GPU computes with it.
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Why D is wrong
Output devices like monitors present results; the GPU only prepares the image that a display then shows.
Question 63 Play from 1:25:17
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Why A is wrong
A backup helps you recover data after a problem but does not block online attacks.
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Why B is wrong
Updating a paid app is routine upkeep and is not aimed at stopping threats.
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Why C is wrong
A remote access tool opens another way into the device, which widens exposure.
Right, D is the answer.
Why D is right
When updates install on their own, security patches reach the phone as soon as they are released, so known weaknesses are closed before attackers can use them. That is action taken ahead of a threat. The other choices either help recover data after a loss, deal with paid apps, or add new risk.
Question 64 Play from 1:27:03
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Why A is wrong
Twelve is a whole number, which makes it an integer.
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Why B is wrong
Letters like these are text, so this is a string.
Right, C is the answer.
Why C is right
A float holds numbers that have a fractional part, shown with a decimal point. The value negative 2.34 has digits after the point, so it is a float.
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Why D is wrong
Zero is a whole number with no fractional part, so it is an integer.
Question 65 Play from 1:28:19
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Why A is wrong
Memory modules fit DIMM or SODIMM slots.
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Why B is wrong
Network cards are usually PCIe or built into the board; M.2 is mainly associated with drives.
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Why C is wrong
Graphics cards normally sit in a PCIe slot.
Right, D is the answer.
Why D is right
M.2 is a small card-shaped slot design used mainly for solid state drives, and NVMe drives are commonly built in this shape. The other parts listed normally use different connectors.
Question 66 Play from 1:29:41
What could explain the failure?
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Why A is wrong
Syncing keeps data matched between devices and does not usually stop a Wi-Fi link.
Right, B is the answer.
Why B is right
Cellars are surrounded by concrete, earth, and metal, which absorb and reflect radio waves. Add the distance from the router and other devices on the same frequency, and this interference can weaken the signal enough that the laptop cannot connect. The other options do not explain a failure that happens in one spot.
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Why C is wrong
A permission problem would be tied to the account, not to standing in one part of the house.
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Why D is wrong
Speed describes how fast data moves once connected, not whether a link can be made.
Question 67 Play from 1:31:10
Which password policy would most directly stop this habit?
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Why A is wrong
A length rule sets a minimum size but allows the same password everywhere.
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Why B is wrong
Privacy is not a recognized password policy.
Right, C is the answer.
Why C is right
A reuse policy stops people from using the same password again, which directly targets the habit described. Complexity and length only set how strong a password must be, and privacy is not a recognized password policy.
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Why D is wrong
Complexity forces mixed character types but does not stop the same password being used on many sites.
Question 68 Play from 1:32:30
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Why A is wrong
A hard drive keeps data long term but does not run instructions.
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Why B is wrong
Memory holds the programs and data in use but does not process them.
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Why C is wrong
A network card links the computer to a network and does not run the operating system.
Right, D is the answer.
Why D is right
The CPU is the processor that fetches and carries out instructions from the operating system and from every program. It does the calculating that keeps the system running. The other parts only store data or move network traffic.
Question 69 Play from 1:33:52
What should the shopper do?
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Why A is wrong
Wiping stored site data frees space or resets sessions but shows nothing about the certificate.
Right, B is the answer.
Why B is right
Selecting the padlock beside the web address opens a panel showing the site's certificate, including who issued it and whether the browser trusts it. This is the usual way to check a certificate. Housekeeping actions like clearing data reveal nothing about it.
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Why C is wrong
A pop-up blocker only stops extra windows from opening.
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Why D is wrong
Erasing the history removes a list of past visits and says nothing about whether a certificate is valid.
Question 70 Play from 1:35:26
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Why A is wrong
A backup might ease a move to another server, but that is a side effect, not the main purpose.
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Why B is wrong
A copy can be used for trial runs, yet backups are not made mainly for that.
Right, C is the answer.
Why C is right
The main point of keeping regular backups is being able to get data back after it is deleted, corrupted, or lost. Moving data around, testing, or sharing may be possible with a copy, but those are side uses, not the reason backups are made.
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Why D is wrong
Sharing is not why backups are made; they are kept for recovery.
Question 71 Play from 1:37:00
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Why A is wrong
Neither type is faster by nature; current versions of both can reach comparable speeds.
Right, B is the answer.
Why B is right
The key difference is where the NIC lives. An onboard NIC is part of the motherboard from the factory, while an expansion NIC is a separate card that you plug into a slot.
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Why C is wrong
That describes an expansion card NIC, so the statement is backwards.
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Why D is wrong
Price is not the defining difference, and onboard NICs usually add little or no cost.
Question 72 Play from 1:38:43
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Why A is wrong
Octal writes thirteen as 15, which takes two characters.
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Why B is wrong
Decimal needs two characters, a one and a three, while hexadecimal needs only one.
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Why C is wrong
Binary needs four characters, 1101.
Right, D is the answer.
Why D is right
Thirteen is 1101 in binary, which is four digits. It is 15 in octal and 13 in decimal, both two digits. In hexadecimal it is the single letter D. Hexadecimal has the largest base, with sixteen symbols, so it fits every value up to fifteen in one character.
Question 73 Play from 1:40:07
Which term best describes this?
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Why A is wrong
Capture is only the gathering stage and does not involve presenting findings to leaders.
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Why B is wrong
Monetization is about earning money from data, not informing internal decisions.
Right, C is the answer.
Why C is right
Meaningful reporting means turning gathered data into summaries and insights that help leaders make choices. Handing executives useful information so they can steer the business is exactly that.
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Why D is wrong
Minimization means limiting how much data is collected and kept, which is a privacy practice, not a decision-support one.
Question 74 Play from 1:41:32
What is the most probable cause?
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Why A is wrong
Permissions control what files or programs a user may open, not whether the hardware is noticed.
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Why B is wrong
Low memory may slow things down but does not stop a USB device from being recognized.
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Why C is wrong
Security software scans or blocks files, but it does not normally stop the system from seeing the device itself.
Right, D is the answer.
Why D is right
If a USB port has been switched off, nothing plugged into it will show up. Ports can be turned off in firmware settings, in device management, or by administrator policy. That makes a disabled port the likeliest reason.
Question 75 Play from 1:43:05
Which device category does it belong to?
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Why A is wrong
Security describes a purpose such as cameras or locks, while a thermostat's main job is climate control.
Right, B is the answer.
Why B is right
A thermostat that connects to the home network, senses temperature, and can be controlled remotely is an Internet of Things device. IoT covers everyday objects with built-in connectivity and sensors.
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Why C is wrong
Networking gear like routers and switches builds the network; a thermostat is a device that uses it.
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Why D is wrong
Virtual reality is about immersive headsets and has nothing to do with heating control.
Question 76 Play from 1:44:30
What is the best fix?
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Right, A is the answer.
Why A is right
Browsers keep saved copies of pages so they load faster, and a saved copy can become outdated. A normal refresh may keep serving that copy. Clearing the cache removes it, so the browser requests the latest version from the website.
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Why B is wrong
Syncing a profile moves bookmarks and settings between devices and does not change saved page copies.
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Why C is wrong
A pop-up blocker stops unwanted windows and has no effect on stored pages.
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Why D is wrong
Turning off add-ons can fix some display glitches but does not remove the saved old copy of the page.
Question 77 Play from 1:46:06
Which step must come first?
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Why A is wrong
Finding links between data points needs data that was already gathered.
Right, B is the answer.
Why B is right
Before anything can be analyzed or reported, information has to be gathered. Collection comes first, and analysis, correlation, and any later monetization all depend on that data existing.
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Why C is wrong
Earning money from data is a later goal that follows gathering and analysis.
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Why D is wrong
Analysis works on data that has been gathered, so it follows collection.
Question 78 Play from 1:47:31
What divides up and controls the hardware resources given to each VM?
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Why A is wrong
SaaS delivers finished applications over the internet and does not allocate VM resources.
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Why B is wrong
The guest operating system runs inside the virtual machine and does not decide how resources are shared.
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Why C is wrong
PaaS is a cloud service model for building applications and does not manage the resources of individual VMs.
Right, D is the answer.
Why D is right
The hypervisor is the software layer between the physical hardware and the virtual machines. It hands out processor time, memory, storage, and network access to each VM and keeps them separate. Guest operating systems run inside a VM, and PaaS and SaaS are ways of delivering cloud services.
Question 79 Play from 1:49:03
Which security concept does this reflect?
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Why A is wrong
Authentication proves who someone is at sign in; it does not tally earlier sign ins.
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Why B is wrong
Non-repudiation stops someone from denying an action, while here the goal is just counting logons.
Right, C is the answer.
Why C is right
Accounting is the part of security that records what users do, such as when they sign in and how long they stay. Counting a person's logons from log files uses that recorded activity, which supports auditing.
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Why D is wrong
Authorization sets what a verified user may access, not how often they logged on.
Question 80 Play from 1:50:34
Which option fits?
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Why A is wrong
A NAS is a storage box reached over the network rather than a drive installed locally.
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Why B is wrong
A hard disk records data magnetically, which breaks the first condition.
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Why C is wrong
RAM loses its contents when power is cut, so it is volatile.
Right, D is the answer.
Why D is right
An SSD stores data in flash chips, so it has no magnetic platters, keeps data when power is off, and uses no laser or disc. It also installs inside a workstation, so it satisfies all three conditions.
Question 81 Play from 1:52:04
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Right, A is the answer.
Why A is right
Satellite service reaches any site with an open view of the sky, so it needs no local lines or towers. That makes it the practical pick for a valley with neither.
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Why B is wrong
It depends on nearby towers, and the site has none.
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Why C is wrong
It runs over telephone wiring, which the site lacks.
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Why D is wrong
It needs physical glass cable run to the building, and no cabling exists there.
Question 82 Play from 1:53:18
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Why A is wrong
It filters traffic crossing the network and cannot clean a file already saved locally.
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Why B is wrong
It closes known software holes but does not clear out malicious files already present.
Right, C is the answer.
Why C is right
Anti-malware software scans files on the machine, spots malicious code, and quarantines or deletes it. It is the one choice that deals with an infection that is already sitting on the computer.
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Why D is wrong
They limit what accounts may access, yet they never detect or delete a harmful file.
Question 83 Play from 1:54:43
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Why A is wrong
Storage means saving data for later, which happens after the typing is done.
Right, B is the answer.
Why B is right
Pressing keys sends data from a person into the computer, and that is what input means. The keyboard is an input device, so typing belongs to this stage.
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Why C is wrong
Processing is the computer working on the data internally, not the person entering it.
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Why D is wrong
Output is what the computer presents back to the user, such as text on a screen.
Question 84 Play from 1:56:02
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Why A is wrong
This term is about very large volumes of data, not about how important the data is.
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Why B is wrong
It means data that is sold or used to earn revenue, not data that must be safeguarded.
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Why C is wrong
It describes data sets that show a relationship to one another, not their level of importance.
Right, D is the answer.
Why D is right
Critical data is information the organization cannot afford to lose because its work depends on it. Trade secrets fit that description, which explains why extra backup effort is justified.
Question 85 Play from 1:57:25
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Why A is wrong
Drivers help hardware work properly and do not make the laptop safer.
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Why B is wrong
Backups protect data from loss but do not reduce the weaknesses on the system itself.
Right, C is the answer.
Why C is right
New laptops often ship with extra trial programs and preloaded apps that nobody needs. Each one is another possible weak spot, so uninstalling them shrinks the area an attacker could target.
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Why D is wrong
Benchmarks only measure speed and have no effect on security.
Question 86 Play from 1:58:52
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Why A is wrong
It is used to fasten the connector on, which must be finished before any testing.
Right, B is the answer.
Why B is right
You cut the cable, prepare the wires, seat them in the connector, and crimp it. Only then do you plug the finished cable into a tester to confirm every wire is connected correctly.
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Why C is wrong
It is used at the start to trim the cable to the length needed.
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Why D is wrong
It is fitted onto the wires during assembly, well before the final check.
Question 87 Play from 2:00:10
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Right, A is the answer.
Why A is right
Predictive text relies on AI models that learn from language patterns and what the user has typed so far. They use that learning to guess the word or phrase likely to come next.
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Why B is wrong
They are add-ons that give a program extra features and are not what predicts words.
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Why C is wrong
It is program code produced by a tool, not the method that guesses upcoming text.
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Why D is wrong
It refers to handling huge data collections and does not itself make predictions about typing.
Question 88 Play from 2:01:32
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Why A is wrong
It handles many tasks such as video, games, and apps, so it is not made only for books.
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Why B is wrong
It is a general-purpose computer meant for all kinds of work.
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Why C is wrong
It is built for immersive virtual environments, not for reading books.
Right, D is the answer.
Why D is right
An e-reader is built for one job, which is reading books, and its screen is easy on the eyes over long sessions. The other devices can show books but are made for many other purposes.
Question 89 Play from 2:02:50
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Why A is wrong
It secures web page traffic only and does not form a tunnel for all data.
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Why B is wrong
It makes files smaller and offers no encryption or tunnel.
Right, C is the answer.
Why C is right
A virtual private network wraps traffic in encryption and carries it through a private tunnel across the internet. Anyone watching the connection in between cannot read the data.
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Why D is wrong
It is just the scrambled output of encryption, not something that builds a tunnel.
Question 90 Play from 2:04:11
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Right, A is the answer.
Why A is right
Disk management is the built-in tool for working with storage drives. It lets you create or resize partitions, format volumes, and assign drive letters.
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Why B is wrong
It deals with how running programs are scheduled and given resources, not with drives.
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Why C is wrong
It covers hardware drivers and attached peripherals, not how storage is laid out.
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Why D is wrong
It is about watching active tasks and does not change storage layout.
Question 91 Play from 2:05:33
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Why A is wrong
They are properties that describe an object and cannot take commands.
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Why B is wrong
They are programs running quietly in the background and give no place to type commands.
Right, C is the answer.
Why C is right
A console is a text window where a person types commands and the system carries them out. Command prompt and terminal windows are common examples.
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Why D is wrong
It is a program currently running, not an interface for entering instructions.
Question 92 Play from 2:06:46
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Why A is wrong
It sends light through glass cable over short ground distances and has the lowest lag of the group.
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Why B is wrong
It uses ground-based coaxial lines and has only a small delay.
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Why C is wrong
It runs over ground-based phone lines and has a modest delay, far below satellite.
Right, D is the answer.
Why D is right
Satellite signals must travel up to an orbiting satellite and back down to earth. That very long trip adds a noticeable lag that ground-based connections do not have.
Question 93 Play from 2:08:05
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Why A is wrong
It connects people who are in different places and is not built for organizing content to present.
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Why B is wrong
It is for drawing flowcharts and technical diagrams, not for presenting general updates.
Right, C is the answer.
Why C is right
Presentation software lets a speaker lay out slides with text and visuals to show to a room. It is made for delivering information to an audience live.
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Why D is wrong
It produces written documents, not slides meant to be shown to a group.
Question 94 Play from 2:09:26
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Why A is wrong
It only exchanges typed messages and cannot install programs on another machine.
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Why B is wrong
It is meant for audio and video meetings and does not give control of a distant computer.
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Why C is wrong
It supports teamwork and file sharing, not taking over a computer to install software.
Right, D is the answer.
Why D is right
Remote support tools let a technician connect to and control another computer over a network. That allows software to be installed and problems fixed without being in the same place.
Question 95 Play from 2:10:46
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Why A is wrong
It lets people log in once for several systems, which has nothing to do with limiting access.
Right, B is the answer.
Why B is right
Under least privilege, people get only the access they need for their role and nothing more. Taking the shared drive away from pupils who do not use it applies exactly that idea.
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Why C is wrong
It prevents someone from denying an action they took, rather than limiting what they can reach.
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Why D is wrong
It asks for more than one proof of identity at login and does not decide how much access a person gets.
Question 96 Play from 2:12:13
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Right, A is the answer.
Why A is right
Storage units grow in steps of about one thousand each time. Of the four listed, the kilobyte sits lowest, below the megabyte, then the terabyte, then the petabyte.
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Why B is wrong
It is far larger than a kilobyte, about a billion times larger.
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Why C is wrong
It is about a thousand times larger than a kilobyte.
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Why D is wrong
It is the biggest of the four listed units.
Question 97 Play from 2:13:20
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Right, A is the answer.
Why A is right
A method is a block of code that belongs to an object and performs an action. Fetching names from a database is an action, so it is carried out by a method.
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Why B is wrong
It is a way to repeat code and is not the part of an object that carries out a task.
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Why C is wrong
It only holds a value and does not perform actions such as querying a database.
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Why D is wrong
It is a property that describes an object, not an action the object carries out.
Question 98 Play from 2:14:40
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Why A is wrong
It is a processor and keeps no user data in memory that must be wiped at shutdown.
Right, B is the answer.
Why B is right
RAM is volatile, meaning it needs power to hold anything. When the computer is switched off, everything in it disappears and it begins empty on the next start.
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Why C is wrong
Its settings are kept in non-volatile storage and stay in place when power is off.
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Why D is wrong
The network card keeps its firmware and identity after the computer is turned off.
Question 99 Play from 2:16:01
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Why A is wrong
These are labels for identifying parts and do not store user data.
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Why B is wrong
Task Manager shows what is running right now, not information kept for later.
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Why C is wrong
RAM is temporary and empties as soon as power is lost.
Right, D is the answer.
Why D is right
Data storage means keeping information on media that holds it even when the power is off. Documents saved to a hard drive stay available for the long term, which fits that definition.
Question 100 Play from 2:17:29
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Why A is wrong
It holds whole numbers only, so cents would be lost.
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Why B is wrong
It holds just true or false and cannot represent an amount of money.
Right, C is the answer.
Why C is right
Pay amounts usually include cents, so the value needs a data type that can hold decimals. A float does that.
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Why D is wrong
It holds a single letter or symbol, not a number that can be used in pay calculations.
Transcript
Play from 00:00 Question 1. A junior developer is building a billing script and needs a named spot in memory that holds a number which changes from time to time while the program runs. Which of the following should be used? Here are the options. Option A. Constant. Option B. Variable. Option C. Sequence. Option D. Loop. Pause the video now if you want time to think about the answer.
The correct answer is B. Variable. A variable is a named place in memory whose contents can change while the program runs, which fits a value that gets refreshed over time. A constant stays fixed, a loop only repeats instructions, and a sequence is just the order in which steps run. Now, why are the other options incorrect? Option A is incorrect. A constant is set once and cannot be changed, so it cannot be refreshed. Option C is incorrect. A sequence describes the order of steps and does not store anything. Option D is incorrect. A loop repeats instructions; it does not hold a value. Therefore, B, Variable, is the correct answer.
Play from 01:28 Question 2. A small clinic keeps a short list of records in a plain text file instead of a database. Which benefit does this approach offer when the amount of data is tiny? Here are the options. Option A. Variety of data. Option B. Speed. Option C. Scalability. Option D. Concurrent users. Pause the video now if you want time to think about the answer.
The correct answer is B. Speed. With only a little data, a flat file has almost no overhead, so reading and writing it is quick. It does not grow well, it struggles when several people edit at once, and it is not suited to mixed or complex data. Now, why are the other options incorrect? Option A is incorrect. Flat files suit one simple layout, not many different kinds of data. Option C is incorrect. Performance drops as the file grows, so it scales poorly. Option D is incorrect. Several people editing one file at the same time causes conflicts. Therefore, B, Speed, is the correct answer.
Play from 02:49 Question 3. While designing a customer table, a database administrator sets up an internal identifier field that refuses any repeated value. What did the administrator define? Here are the options. Option A. Query. Option B. Semistructured database. Option C. Primary key. Option D. Schema. Pause the video now if you want time to think about the answer.
The correct answer is C. Primary key. A primary key is the field that gives every row its own identity, so the database blocks any repeated value in it. That matches the unique identifier field described. Now, why are the other options incorrect? Option A is incorrect. A query asks the database for data and does not define a rule for a field. Option B is incorrect. That is a kind of database, not a rule applied to a single field. Option D is incorrect. A schema describes the whole database layout, not one unique field. Therefore, C, Primary key, is the correct answer.
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Play from 04:06 Question 4. A game developer wants a set of instructions to run again and again automatically. Which programming construct does this? Here are the options. Option A. Comment. Option B. Integrate. Option C. Loop. Option D. Branch. Pause the video now if you want time to think about the answer.
The correct answer is C. Loop. A loop runs the same instructions over and over until its stopping condition is met, which is how code repeats work. Structures such as for and while loops are the standard way to automate repeated tasks. Now, why are the other options incorrect? Option A is incorrect. A comment is a note for human readers and never runs. Option B is incorrect. Integrating means joining systems or parts together, not repeating instructions. Option D is incorrect. A branch picks one path based on a condition, without repeating anything. Therefore, C, Loop, is the correct answer.
Play from 05:26 Question 5. A consulting firm rolls out a platform so staff in different cities can hold live meetings online. Which kind of tool did the firm adopt? Here are the options. Option A. Remote assistance. Option B. Conferencing software. Option C. Web browsing. Option D. Document sharing. Pause the video now if you want time to think about the answer.
The correct answer is B. Conferencing software. Conferencing software is built for live online meetings, with audio, video, and often screen sharing for several people at once. Now, why are the other options incorrect? Option A is incorrect. It lets a technician control someone else's computer and is not meant for group meetings. Option C is incorrect. A browser views websites and does not host meetings. Option D is incorrect. It gives people access to shared files but offers no live meeting. Therefore, B, Conferencing software, is the correct answer.
Play from 06:44 Question 6. A help desk engineer must connect to an employee's laptop through a VPN to fix a fault. Which type of software fits this job? Here are the options. Option A. Productivity. Option B. Remote assistance. Option C. Collaboration. Option D. Web browsing. Pause the video now if you want time to think about the answer.
The correct answer is B. Remote assistance. Remote assistance software lets a technician reach and operate a user's computer across a network, including over a VPN, to diagnose and repair problems. Now, why are the other options incorrect? Option A is incorrect. Productivity software such as office apps helps people do their own work and offers no remote control. Option C is incorrect. Collaboration tools support teamwork and messaging, not control of another machine. Option D is incorrect. A browser views web content and cannot take over a laptop. Therefore, B, Remote assistance, is the correct answer.
Play from 08:06 Question 7. A design team of several people needs a place to keep shared project files that stays reachable at all times. Which choice best provides high availability? Here are the options. Option A. Flash drive. Option B. Local backup. Option C. Cloud storage. Option D. External hard drive. Pause the video now if you want time to think about the answer.
The correct answer is C. Cloud storage. Cloud storage keeps copies on redundant servers in several locations, and team members can reach the files from anywhere, so the data stays available even if one device or site fails. The other choices sit on a single device or in one place. Now, why are the other options incorrect? Option A is incorrect. It is a small portable device with no redundancy, and it is easy to lose or break. Option B is incorrect. It sits in one location, so fire, theft, or hardware failure can make it unavailable. Option D is incorrect. It is a single physical device that can fail or be misplaced, and it works only when plugged in. Therefore, C, Cloud storage, is the correct answer.
Play from 09:35 Question 8. After switching to a new seat beside the office kitchen, an employee suddenly cannot connect to the Wi-Fi. What is the most likely cause? Here are the options. Option A. Access control. Option B. Speed considerations. Option C. Interference factors. Option D. Older standards. Pause the video now if you want time to think about the answer.
The correct answer is C. Interference factors. Kitchen appliances such as microwave ovens give off signals in the same 2.4GHz range many Wi-Fi networks use, and that can disrupt or block the connection. The trouble began exactly when the seat moved close to the kitchen, which points to interference. Now, why are the other options incorrect? Option A is incorrect. A permissions problem would block the user from every location, not only near the kitchen. Option B is incorrect. Speed issues slow a connection down; they do not stop it altogether. Option D is incorrect. An outdated standard would have caused trouble at the old desk too, and moving does not change it. Therefore, C, Interference factors, is the correct answer.
Play from 11:06 Question 9. A network technician needs to attach an RJ45 plug to the end of a Cat 6 patch cable. Which tool is used? Here are the options. Option A. Wire cutter. Option B. Punchdown. Option C. Crimper. Option D. Cable tester. Pause the video now if you want time to think about the answer.
The correct answer is C. Crimper. A crimper squeezes the RJ45 connector onto the wires at the end of the cable so it makes firm contact. The other tools cut the cable, seat wires in a jack or panel, or check a finished cable. Now, why are the other options incorrect? Option A is incorrect. It only trims the cable and cannot fasten a connector. Option B is incorrect. It seats wires into wall jacks and patch panels, not into RJ45 plugs. Option D is incorrect. It checks a finished cable but does not attach connectors. Therefore, C, Crimper, is the correct answer.
Play from 12:25 Question 10. A project manager wants to bundle a big collection of documents and folders into one ZIP archive to send to a client. Which feature should be used? Here are the options. Option A. Encryption. Option B. Compression. Option C. Compilation. Option D. Permissions. Pause the video now if you want time to think about the answer.
The correct answer is B. Compression. Compression shrinks files and folders and bundles them into one archive, which is what a ZIP file is. Encryption hides content, permissions manage access, and compilation turns code into programs. Now, why are the other options incorrect? Option A is incorrect. It scrambles contents to protect them; it does not bundle files together. Option C is incorrect. It turns source code into a runnable program. Option D is incorrect. They decide who may open or change files; they do not combine them. Therefore, B, Compression, is the correct answer.
Play from 13:50 Question 11. A help desk technician has just formed a theory about the likely reason for a printer fault. In the standard troubleshooting process, what comes next? Here are the options. Option A. Verify system functionality. Option B. Test the theory. Option C. Document the findings. Option D. Build a plan for the fix. Pause the video now if you want time to think about the answer.
The correct answer is B. Test the theory. Once a theory about the probable cause exists, the technician must test it to confirm it before doing anything else. Only after that can a plan be written and carried out. Now, why are the other options incorrect? Option A is incorrect. Checking that the system works happens near the end, after the fix is applied. Option C is incorrect. Documentation is the last step, after the problem is solved. Option D is incorrect. Planning follows a confirmed theory, so it cannot come first. Therefore, B, Test the theory, is the correct answer.
Play from 15:09 Question 12. A new hire tries to install a program on a work PC. A window asks for credentials, and then an access denied error blocks the installation. Which access level would let the employee finish the installation? Here are the options. Option A. User. Option B. Single factor. Option C. Administrator. Option D. Least privilege. Pause the video now if you want time to think about the answer.
The correct answer is C. Administrator. Installing software changes protected parts of the system, so it needs elevated rights, which Administrator accounts carry. The denial shows the current account lacks those rights. Now, why are the other options incorrect? Option A is incorrect. A standard user account is limited and cannot install system-wide software, which is why the install failed. Option B is incorrect. That describes one way of proving identity, not a level of permission. Option D is incorrect. That principle limits rights to the minimum needed, so it would keep blocking the install. Therefore, C, Administrator, is the correct answer.
Play from 16:35 Question 13. A network engineer is comparing link measurements. Which of these units represents the lowest data rate? Here are the options. Option A. Tbps. Option B. Mbps. Option C. bps. Option D. Gbps. Pause the video now if you want time to think about the answer.
The correct answer is C. bps. Each metric prefix multiplies the rate by a large factor: mega, giga, then tera. Plain bits per second is the base unit, so it is the smallest and slowest of the four. Now, why are the other options incorrect? Option A is incorrect. A terabit per second is a trillion bits per second, far above bps. Option B is incorrect. A megabit per second is a million bits per second, much larger than bps. Option D is incorrect. A gigabit per second is a billion bits per second, much larger than bps. Therefore, C, bps, is the correct answer.
Play from 17:52 Question 14. An online shop wants customers' browsers to reach its store over an encrypted TLS connection. Which protocol provides this for web traffic? Here are the options. Option A. POP. Option B. HTTPS. Option C. SMTP. Option D. IMAP. Pause the video now if you want time to think about the answer.
The correct answer is B. HTTPS. HTTPS is ordinary web traffic wrapped in TLS encryption, which protects logins and payment details on shopping sites. The other three protocols carry email, not web pages. Now, why are the other options incorrect? Option A is incorrect. POP downloads email from a mail server and is not used for web pages. Option C is incorrect. SMTP sends email between servers and is not used for web pages. Option D is incorrect. IMAP is a mail access protocol; it does not carry web pages. Therefore, B, HTTPS, is the correct answer.
Play from 19:17 Question 15. A storage administrator compares four capacities. Which one is the biggest? Here are the options. Option A. 2,000KB. Option B. 20TB. Option C. 2,000GB. Option D. 200MB. Pause the video now if you want time to think about the answer.
The correct answer is B. 20TB. Putting everything in terabytes makes it easy: 20TB stays 20, 2,000GB is only 2TB, 2,000KB is about 0.002TB, and 200MB is about 0.0002TB. So 20TB is the largest by a wide margin. Now, why are the other options incorrect? Option A is incorrect. That is roughly 0.002TB, tiny next to 20TB. Option C is incorrect. That equals 2TB, only a tenth of 20TB. Option D is incorrect. That is about 0.0002TB, the smallest value in the list. Therefore, B, 20TB, is the correct answer.
Play from 20:43 Question 16. A technician checking a slow workstation sees that one program is taking up 90% of the processor. What is the most likely way to resolve it? Here are the options. Option A. Remote assistance. Option B. Application management. Option C. Process management. Option D. Disk management. Pause the video now if you want time to think about the answer.
The correct answer is C. Process management. Process management tools show every running process and how much processor time each one uses, and they let you end or adjust the one hogging the CPU. This tackles the 90% symptom directly. Now, why are the other options incorrect? Option A is incorrect. It lets someone connect to the machine, but it does not itself control which process uses the CPU. Option B is incorrect. It deals with installing, updating, and removing programs, not live CPU load. Option D is incorrect. It handles drives and partitions, which is unrelated to processor usage. Therefore, C, Process management, is the correct answer.
Play from 22:09 Question 17. A records manager at a logistics company needs to pull out the rows that were changed in the last few days. Which database function should be run? Here are the options. Option A. Report. Option B. Create. Option C. Import. Option D. Query. Pause the video now if you want time to think about the answer.
The correct answer is D. Query. A query asks the database for the records that match a condition, such as a recent change date, and returns them. Creating adds new data, importing loads data from elsewhere, and a report formats results for reading. Now, why are the other options incorrect? Option A is incorrect. A report presents data in a formatted layout, but it is not the function that pulls the records. Option B is incorrect. Create makes new entries or structures; it does not look up existing ones. Option C is incorrect. Import loads outside data into the database. Therefore, D, Query, is the correct answer.
Play from 23:30 Question 18. A school app must store how many pupils have signed up for a course. Which data type suits that value best? Here are the options. Option A. Float. Option B. Integer. Option C. Char. Option D. Boolean. Pause the video now if you want time to think about the answer.
The correct answer is B. Integer. A headcount is always a whole number with no fraction, which is exactly what an integer holds. Floats are for decimals, Booleans for yes or no, and Char for a single character. Now, why are the other options incorrect? Option A is incorrect. It stores decimals, and a count of people never has a fractional part. Option C is incorrect. It holds a single character, not a number to count with. Option D is incorrect. It stores only true or false, not a quantity. Therefore, B, Integer, is the correct answer.
Play from 24:44 Question 19. A buyer compares four processors by clock speed. Which one runs fastest? Here are the options. Option A. 3.1GHz. Option B. 4.4GHz. Option C. 1.2MHz. Option D. 5.5MHz. Pause the video now if you want time to think about the answer.
The correct answer is B. 4.4GHz. A gigahertz is a thousand megahertz, so 4.4GHz equals 4,400MHz. That beats 3.1GHz, and both megahertz figures are tiny by comparison. Now, why are the other options incorrect? Option A is incorrect. That is lower than 4.4GHz. Option C is incorrect. That is about 0.0012GHz, thousands of times slower. Option D is incorrect. That is only 0.0055GHz; the larger-looking number is misleading because the unit is far smaller. Therefore, B, 4.4GHz, is the correct answer.
Play from 26:08 Question 20. A retailer is choosing a non-relational database for its order history. Which element is it most likely to use? Here are the options. Option A. Schema. Option B. Foreign key. Option C. Primary key. Option D. Key/value pair. Pause the video now if you want time to think about the answer.
The correct answer is D. Key/value pair. Non-relational databases often store records as key/value pairs, which lets each order hold flexible fields without a fixed table layout. Now, why are the other options incorrect? Option A is incorrect. A fixed schema is typical of relational databases; non-relational ones are flexible about structure. Option B is incorrect. It links tables together, which is a relational design feature. Option C is incorrect. It is the unique row identifier in a relational table, a relational feature. Therefore, D, Key/value pair, is the correct answer.
Play from 27:28 Question 21. An office manager is labeling a diagram of the computers wired together inside a single building. Which term names a network of nearby computers linked to one another? Here are the options. Option A. Client/server. Option B. LAN. Option C. MAC. Option D. Peer-to-peer. Pause the video now if you want time to think about the answer.
The correct answer is B. LAN. LAN stands for local area network. It ties together computers that sit near each other, such as within one office, building, or campus. That closeness is what defines the term. Now, why are the other options incorrect? Option A is incorrect. This describes how roles are split between a serving machine and the machines using it. It says nothing about how close the computers are. Option C is incorrect. A MAC address is a hardware identifier built into a network card. It is not a type of network. Option D is incorrect. This describes devices acting as equals and sharing with each other. It does not mean the devices are physically close. Therefore, B, LAN, is the correct answer.
Play from 28:59 Question 22. A network technician at a school district needs a device whose main job is to allow some traffic through and block the rest according to configured rules. Which device is it? Here are the options. Option A. Switch. Option B. Router. Option C. Firewall. Option D. Access point. Pause the video now if you want time to think about the answer.
The correct answer is C. Firewall. A firewall exists to decide which traffic may pass and which must be stopped, using a set of security rules. Routers, switches, and access points mainly move or deliver data, so any filtering they do is secondary. Now, why are the other options incorrect? Option A is incorrect. A switch links devices inside a local network and passes frames using hardware addresses. Blocking traffic is not its main purpose. Option B is incorrect. A router moves packets between separate networks. Controlling which traffic is allowed is a side feature, not its main job. Option D is incorrect. An access point gives wireless devices a way onto the network. Filtering traffic is not why it exists. Therefore, C, Firewall, is the correct answer.
Play from 30:38 Question 23. A student wants to copy songs from a laptop onto a phone using a wired connection. Which cable fits this job? Here are the options. Option A. VGA. Option B. NFC. Option C. Thunderbolt. Option D. USB-C. Pause the video now if you want time to think about the answer.
The correct answer is D. USB-C. USB-C is the common connector on current phones and computers, and it carries both charging power and file data. That makes it the natural choice for copying music to a phone. Now, why are the other options incorrect? Option A is incorrect. VGA carries a video signal to a display. It is not used to move files to a phone. Option B is incorrect. NFC is a short-range wireless technology, not a cable, and it is too limited for moving a large music library. Option C is incorrect. Thunderbolt is a fast interface found mainly on certain laptops and is not the usual link between a phone and a computer. Therefore, D, USB-C, is the correct answer.
Play from 32:05 Question 24. A logistics corporation needs a term for the information it cannot run its daily business without. Which term fits? Here are the options. Option A. Critical data. Option B. Big data. Option C. Correlated data. Option D. Monetized data. Pause the video now if you want time to think about the answer.
The correct answer is A. Critical data. Critical data is the information a company needs to keep operating from one day to the next. If it were lost or unreachable, normal work would stall. The other terms describe size, relationships, or revenue, not dependence. Now, why are the other options incorrect? Option B is incorrect. Big data refers to very large and complex collections of data. It says nothing about how essential the data is. Option C is incorrect. Correlated data means data sets that show a statistical link to each other, not data the business depends on. Option D is incorrect. Monetized data is data that is sold or otherwise used to earn income. Therefore, A, Critical data, is the correct answer.
Play from 33:31 Question 25. An analyst at a retail chain has a plain text file full of product records and wants to load them into a database. Which database function accomplishes this? Here are the options. Option A. Report. Option B. Query. Option C. Import. Option D. Create. Pause the video now if you want time to think about the answer.
The correct answer is C. Import. Import reads data from an outside source, such as a flat file, and places it into the database tables. Creating builds structures, querying looks up stored data, and reporting formats stored data for display. Now, why are the other options incorrect? Option A is incorrect. A report presents data that is already stored in the database. It does not bring new data in. Option B is incorrect. A query pulls out data that is already in the database. It does not read in an outside file. Option D is incorrect. Create builds a new database object such as a table. It does not fill it from an existing file. Therefore, C, Import, is the correct answer.
Play from 34:56 Question 26. In a coding lesson, a student asks what it is called when a block of instructions keeps running over and over until a stop condition becomes true. What is the answer? Here are the options. Option A. Looping. Option B. Sequencing. Option C. Exception handling. Option D. Branching. Pause the video now if you want time to think about the answer.
The correct answer is A. Looping. Looping repeats a set of instructions until a chosen condition is satisfied. For loops and while loops are familiar examples, and each one checks a condition to decide whether to go around again. Now, why are the other options incorrect? Option B is incorrect. Sequencing means instructions run one after another in order. Nothing in it repeats. Option C is incorrect. Exception handling deals with errors and unexpected events. It is not about repeating steps. Option D is incorrect. Branching picks one path or another based on a condition, such as an if statement. It does not repeat code. Therefore, A, Looping, is the correct answer.
Play from 36:20 Question 27. A conference room is being equipped with new gear. Which item below is classified as an output device? Here are the options. Option A. Keyboard. Option B. Microphone. Option C. Smart TV. Option D. Web camera. Pause the video now if you want time to think about the answer.
The correct answer is C. Smart TV. A smart TV takes signals from a computer and shows them as pictures and video, so it presents information to the user. The keyboard, microphone, and web camera all work in the opposite direction by collecting data to send in. Now, why are the other options incorrect? Option A is incorrect. A keyboard is an input device. It takes typed text and commands from the user. Option B is incorrect. A microphone is an input device. It picks up sound and sends it to the computer. Option D is incorrect. A web camera is an input device. It records video and passes it to the computer. Therefore, C, Smart TV, is the correct answer.
Play from 37:43 Question 28. An IT manager at a public library needs to check whether patrons visited unsuitable websites on a shared workstation. Which source would show this? Here are the options. Option A. Cookie data. Option B. Web browser history. Option C. Location tracking. Option D. System logs. Pause the video now if you want time to think about the answer.
The correct answer is B. Web browser history. Browser history keeps a running list of the pages a person has opened on that device. That makes it the most direct way to see whether inappropriate sites were visited. Now, why are the other options incorrect? Option A is incorrect. Cookies keep site preferences and session details. They do not give a full picture of what pages were viewed. Option C is incorrect. Location tracking shows where a device is. It does not show which online content was viewed. Option D is incorrect. System logs record operating system and application events. They do not list the websites that were visited. Therefore, B, Web browser history, is the correct answer.
Play from 39:10 Question 29. A systems administrator has just finished installing an operating system on a new server. Which action should come next? Here are the options. Option A. Wipe the stored password complexity settings. Option B. Make the admin logins identical to those on the other domain servers. Option C. Replace the default usernames and passwords with new ones. Option D. Remove the need for an administrator password. Pause the video now if you want time to think about the answer.
The correct answer is C. Replace the default usernames and passwords with new ones. Default accounts and passwords are publicly documented, so attackers try them first. Replacing them right after setup closes that easy way in. The other choices either do nothing for security or make the server weaker. Now, why are the other options incorrect? Option A is incorrect. Removing complexity rules makes passwords easier to guess, which lowers security. Option B is incorrect. This is not a standard security step after setup, and sharing identical admin credentials across servers adds risk. Option D is incorrect. Leaving the most powerful account without a password takes away a key protection. Therefore, C, Replace the default usernames and passwords with new ones, is the correct answer.
Play from 40:48 Question 30. On a public forum, members are posting the birth dates and home addresses of well-known celebrities. Which security concept is being violated? Here are the options. Option A. Availability. Option B. Privacy. Option C. Integrity. Option D. Confidentiality. Pause the video now if you want time to think about the answer.
The correct answer is B. Privacy. Privacy is a person's right to decide who can see details about their own life. Publishing someone's birth date and home address in an open forum exposes personal information they never agreed to share. Now, why are the other options incorrect? Option A is incorrect. Availability is about being able to reach resources when needed. Nothing here blocks access to anything. Option C is incorrect. Integrity means data stays accurate and unaltered. Posting facts does not change the data. Option D is incorrect. Confidentiality is about keeping information from unauthorized parties in general. This scenario is specifically about exposing personal details of individuals. Therefore, B, Privacy, is the correct answer.
Play from 42:16 Question 31. A physiotherapy center wants a technology that tracks each patient's health around the clock. Which device would help? Here are the options. Option A. Webcam. Option B. Smartwatch. Option C. E-reader. Option D. Scanner. Pause the video now if you want time to think about the answer.
The correct answer is B. Smartwatch. A smartwatch is worn on the wrist and has sensors that keep measuring things like pulse, movement, and sleep all day. That constant tracking matches what the center wants. The other devices have no health sensors. Now, why are the other options incorrect? Option A is incorrect. A webcam captures video for communication and is not built to track health measurements. Option C is incorrect. An e-reader is meant for reading books and documents, not for tracking health. Option D is incorrect. A scanner turns paper into digital files and does not track a person's health. Therefore, B, Smartwatch, is the correct answer.
Play from 43:37 Question 32. A developer is designing a contact form and must choose a data type for a customer's telephone number. Which type is the best fit? Here are the options. Option A. Float. Option B. Char. Option C. String. Option D. Integer. Pause the video now if you want time to think about the answer.
The correct answer is C. String. Phone numbers are identifiers, not quantities, so they are kept as text. A string can hold dashes, parentheses, spaces, extensions, and leading zeros exactly as entered. Now, why are the other options incorrect? Option A is incorrect. A float holds numbers with decimal parts, which makes no sense for a phone number. Option B is incorrect. A char holds a single character, so it cannot store a full phone number. Option D is incorrect. An integer cannot hold symbols such as dashes or plus signs, and it drops any leading zeros. Therefore, C, String, is the correct answer.
Play from 44:57 Question 33. A programmer writes a named chunk of code that does one job and can be called again from many places in a program. What is this called? Here are the options. Option A. Functions. Option B. Arrays. Option C. Variables. Option D. Methods. Pause the video now if you want time to think about the answer.
The correct answer is A. Functions. A function packages instructions for one task so they can be called whenever needed, saving the programmer from rewriting them. Methods are similar but tied to objects, so function is the broader and better answer. Now, why are the other options incorrect? Option B is incorrect. Arrays are structures that hold a collection of values, not blocks of code. Option C is incorrect. Variables hold values. They do not carry out a task. Option D is incorrect. Methods are functions that belong to an object, so they are a narrower case. The general term for reusable code is function. Therefore, A, Functions, is the correct answer.
Play from 46:19 Question 34. A technician at a design agency works out why a computer was not working, fixes it, and then prints a test page that comes out fine. According to the troubleshooting process, what is the next step? Here are the options. Option A. Test the theory. Option B. Write down what was found and fixed. Option C. Open a support ticket. Option D. Put the fix into place. Pause the video now if you want time to think about the answer.
The correct answer is B. Write down what was found and fixed. Once the fix is in and a test page shows everything works, the last step is to write down what was found and done. That record helps colleagues if the same problem returns. Now, why are the other options incorrect? Option A is incorrect. The theory was already confirmed when the fix worked and the test page printed. Option C is incorrect. The problem is already solved, so there is nothing left to escalate. Option D is incorrect. The repair has already been carried out, so this step is finished. Therefore, B, Write down what was found and fixed, is the correct answer.
Play from 47:46 Question 35. A storage planner is comparing capacity figures. Which unit below stands for the greatest amount of data? Here are the options. Option A. PB. Option B. TB. Option C. GB. Option D. MB. Pause the video now if you want time to think about the answer.
The correct answer is A. PB. A petabyte is 10 to the 15th bytes. Going up the scale from megabyte to gigabyte to terabyte to petabyte, each step is 1,000 times bigger, so the petabyte tops this list. Now, why are the other options incorrect? Option B is incorrect. A terabyte is 10 to the 12th bytes, which is 1,000 times smaller than a petabyte. Option C is incorrect. A gigabyte is only 10 to the 9th bytes, far below a petabyte. Option D is incorrect. A megabyte is 10 to the 6th bytes, the smallest unit in the list. Therefore, A, PB, is the correct answer.
Play from 49:03 Question 36. An employee wants to stop other machines on the network from connecting in to reach shared files on a laptop. Which security feature can be set up to do this? Here are the options. Option A. Firewall. Option B. Certificates. Option C. Anti-malware. Option D. Multifactor authentication. Pause the video now if you want time to think about the answer.
The correct answer is A. Firewall. A firewall applies rules to network connections coming in and going out. It can be set to refuse incoming file sharing requests, which is exactly what the employee needs. Now, why are the other options incorrect? Option B is incorrect. Certificates support encryption and identity checks, but they do not block incoming file sharing connections. Option C is incorrect. Anti-malware finds and removes harmful software. It does not manage which network connections are allowed. Option D is incorrect. Multifactor authentication confirms who a user is. It does not control incoming network connections. Therefore, A, Firewall, is the correct answer.
Play from 50:33 Question 37. A marketing intern needs a first draft of an online advert for a campaign. Which kind of AI tool is suited to producing it? Here are the options. Option A. Chatbot. Option B. Generative. Option C. Predictive. Option D. Assistive. Pause the video now if you want time to think about the answer.
The correct answer is B. Generative. Generative AI makes brand new content such as text, images, and other media from a prompt. That ability lets it produce a fresh first draft of an advert. Now, why are the other options incorrect? Option A is incorrect. A chatbot is built for conversation, not for producing marketing material. Option C is incorrect. Predictive AI forecasts outcomes from past data. It does not create new ads. Option D is incorrect. Assistive AI helps people finish tasks faster, but it is not meant for making new content such as ads. Therefore, B, Generative, is the correct answer.
Play from 51:54 Question 38. A retailer earns income by handing its shoppers' email lists to companies that want to market their products. Which concept does this illustrate? Here are the options. Option A. Data capture. Option B. Data analytics. Option C. Data monetization. Option D. Data correlation. Pause the video now if you want time to think about the answer.
The correct answer is C. Data monetization. Data monetization means turning data into money or other business value. Selling customer email addresses to outside companies is a clear example of earning income from collected data. Now, why are the other options incorrect? Option A is incorrect. Data capture is the first gathering of information, not selling it on. Option B is incorrect. Data analytics studies data to find insights. It does not involve selling it to outsiders. Option D is incorrect. Data correlation looks for links between data points. It is not about selling data. Therefore, C, Data monetization, is the correct answer.
Play from 53:15 Question 39. A provider's technician is installing a pluggable transceiver with an SFP port at a customer site. Which type of internet service uses this kind of connector? Here are the options. Option A. Cable. Option B. DSL. Option C. Fiber. Option D. Cellular. Pause the video now if you want time to think about the answer.
The correct answer is C. Fiber. SFP stands for small form-factor pluggable. These swappable modules carry light signals over optical cable, so they belong to fiber connections. None of the other services use them as a standard interface. Now, why are the other options incorrect? Option A is incorrect. Cable internet comes in over coaxial wiring with F-type connectors, not SFP. Option B is incorrect. DSL runs over phone lines with RJ11 connectors, not SFP. Option D is incorrect. Cellular service uses radio antennas and SIM cards rather than SFP modules. Therefore, C, Fiber, is the correct answer.
Play from 54:40 Question 40. A buyer is reading the specifications of a new phone. In which unit is its RAM size usually stated? Here are the options. Option A. TB. Option B. GB. Option C. KB. Option D. MB. Pause the video now if you want time to think about the answer.
The correct answer is B. GB. Phone memory is normally listed in gigabytes, with current models often carrying several GB. That makes GB the standard unit for the figure. Now, why are the other options incorrect? Option A is incorrect. Terabytes are far too large for phone memory and are used for big storage drives. Option C is incorrect. Kilobytes are far too small for phone memory and suit tiny files. Option D is incorrect. Megabytes are below what current phones carry. Only very old devices had memory sized in them. Therefore, B, GB, is the correct answer.
Play from 55:55 Question 41. A freelance accountant keeps client tax records on a laptop and wants to make sure nobody without permission can open them. Which of the following measures keeps outsiders away from the file contents? Here are the options. Option A. Compression. Option B. Encryption. Option C. Scanning. Option D. Backup. Pause the video now if you want time to think about the answer.
The correct answer is B. Encryption. Encryption scrambles the contents of a file so it can only be read with the right key. Even if someone copies the file, they cannot make sense of it. The other choices do not lock anyone out. Now, why are the other options incorrect? Option A is incorrect. Compression only makes a file smaller and does nothing to stop someone from opening it. Option C is incorrect. Scanning looks for threats such as malware, but it does not block people from reading the file. Option D is incorrect. A backup is a spare copy kept for recovery, and it does not restrict who can read the original. Therefore, B, Encryption, is the correct answer.
Play from 57:22 Question 42. A help desk tech at a dental clinic must obtain a driver for a label printer, and the only place offering it is the printer maker's own site. What kind of source is this? Here are the options. Option A. Third-party vendor. Option B. App store. Option C. SaaS. Option D. OEM. Pause the video now if you want time to think about the answer.
The correct answer is D. OEM. OEM stands for original equipment manufacturer, the company that built the device. When a driver comes straight from the maker's own website, the source is the OEM. Now, why are the other options incorrect? Option A is incorrect. A third-party vendor resells or redistributes software made by someone else, not the maker itself. Option B is incorrect. An app store is a shared marketplace for apps, not the manufacturer's own download page. Option C is incorrect. SaaS means software delivered as an online service, which is not the same as downloading a device driver. Therefore, D, OEM, is the correct answer.
Play from 58:50 Question 43. In a process diagram, what does a diamond-shaped symbol indicate? Here are the options. Option A. Start. Option B. Stop. Option C. Decision. Option D. Processing. Pause the video now if you want time to think about the answer.
The correct answer is C. Decision. A diamond marks a point where the path splits depending on an answer, such as yes or no. It is the standard symbol for a decision in a flowchart. Now, why are the other options incorrect? Option A is incorrect. The beginning of a flowchart is drawn as an oval or rounded shape, not a diamond. Option B is incorrect. The end of a flowchart uses an oval or rounded shape, just like the start. Option D is incorrect. A regular action or step is drawn as a rectangle. Therefore, C, Decision, is the correct answer.
Play from 1:00:00 Question 44. A student reading about number bases comes across one that is written with the digits zero through nine plus the letters A through F. Which base is it? Here are the options. Option A. Octal. Option B. Binary. Option C. Hexadecimal. Option D. Decimal. Pause the video now if you want time to think about the answer.
The correct answer is C. Hexadecimal. Hexadecimal counts in base sixteen. It needs sixteen symbols, so it uses the ten digits and then the letters A to F for the values ten to fifteen. Now, why are the other options incorrect? Option A is incorrect. Octal only uses the digits zero through seven. Option B is incorrect. Binary only uses the digits zero and one. Option D is incorrect. Decimal uses the digits zero through nine and no letters. Therefore, C, Hexadecimal, is the correct answer.
Play from 1:01:15 Question 45. A computer lab at a community college wants every desktop to keep running briefly when mains power drops, so students can save their files. Which choice suits this need best? Here are the options. Option A. UPS. Option B. Cloud. Option C. File server. Option D. External drive. Pause the video now if you want time to think about the answer.
The correct answer is A. UPS. A UPS has a battery that takes over the moment power is lost. That gives each computer a few minutes to save work and shut down safely. Now, why are the other options incorrect? Option B is incorrect. Cloud storage needs a running computer and network connection, so it cannot keep a powerless workstation on. Option C is incorrect. A file server also loses power in an outage, and it does not keep the workstations running. Option D is incorrect. An external drive stores data but supplies no power, so the computer still shuts off at once. Therefore, A, UPS, is the correct answer.
Play from 1:02:35 Question 46. When someone double-clicks a document in the graphical interface of a desktop operating system, which factor matters most for how that file gets opened? Here are the options. Option A. Backup policy. Option B. Data compression. Option C. Default permissions. Option D. File extension. Pause the video now if you want time to think about the answer.
The correct answer is D. File extension. The extension at the end of a file name tells the operating system what kind of file it is. The system uses that to pick the program that opens it and to treat the contents correctly. Now, why are the other options incorrect? Option A is incorrect. A backup policy is about protecting data over time and has no effect on opening a file right now. Option B is incorrect. Compression affects how much space a file takes, not which program opens it. Option C is incorrect. Permissions decide who may access a file, but they do not tell the system what type of file it is. Therefore, D, File extension, is the correct answer.
Play from 1:03:57 Question 47. Which operating system function decides how much processor time and memory each running program receives, based on priority? Here are the options. Option A. Process management. Option B. Device management. Option C. Application management. Option D. Access management. Pause the video now if you want time to think about the answer.
The correct answer is A. Process management. Process management is the part of the operating system that schedules running programs. It hands out processor time and memory and decides which program goes first. Now, why are the other options incorrect? Option B is incorrect. Device management deals with hardware such as drivers and peripherals, not ranking programs. Option C is incorrect. Application management covers installing, updating and removing software, not sharing out resources. Option D is incorrect. Access management controls who is allowed to use what, not how resources are split between programs. Therefore, A, Process management, is the correct answer.
Play from 1:05:20 Question 48. A teacher wants to show the quantity nine using only the symbols 1 and 0. Which number system does this use? Here are the options. Option A. Octal. Option B. Decimal. Option C. Hexadecimal. Option D. Binary. Pause the video now if you want time to think about the answer.
The correct answer is D. Binary. Binary is the only system built entirely from ones and zeros. Nine is written as 1001 in binary, which is how computers store values. Now, why are the other options incorrect? Option A is incorrect. Octal uses digits zero through seven, so it is not limited to ones and zeros. Option B is incorrect. Decimal uses the digits zero through nine. Option C is incorrect. Hexadecimal uses the digits zero through nine plus the letters A to F. Therefore, D, Binary, is the correct answer.
Play from 1:06:39 Question 49. A sales analyst opens a company database and needs to pull out only certain records. What should the analyst use? Here are the options. Option A. Scale. Option B. Query. Option C. Input. Option D. Big data. Pause the video now if you want time to think about the answer.
The correct answer is B. Query. A query is a request that asks the database for specific data that matches given conditions. It lets the analyst filter and return just the records needed. Now, why are the other options incorrect? Option A is incorrect. Scale describes how large or capable a system can grow, not a way to look up records. Option C is incorrect. Input means putting data into a system, which is the opposite of pulling it out. Option D is incorrect. Big data refers to very large collections of data, not a tool for fetching particular records. Therefore, B, Query, is the correct answer.
Play from 1:07:53 Question 50. Which of these devices is used to feed information into a computer? Here are the options. Option A. Speaker. Option B. Printer. Option C. Scanner. Option D. Motherboard. Pause the video now if you want time to think about the answer.
The correct answer is C. Scanner. A scanner reads a paper document or picture and turns it into digital data for the computer. Anything that sends information in from the outside is an input device. Now, why are the other options incorrect? Option A is incorrect. A speaker plays sound out from the computer, so it is an output device. Option B is incorrect. A printer puts digital content onto paper, so it is an output device. Option D is incorrect. The motherboard is the internal board that connects components, not a device that brings in data. Therefore, C, Scanner, is the correct answer.
Play from 1:09:04 Question 51. How many bits make up one byte? Here are the options. Option A. 2. Option B. 4. Option C. 16. Option D. 8. Pause the video now if you want time to think about the answer.
The correct answer is D. 8. By definition, one byte holds eight bits. This is the basic unit used to measure storage and memory. Now, why are the other options incorrect? Option A is incorrect. Two bits is far too small to make a byte. Option B is incorrect. Four bits is half a byte and is known as a nibble. Option C is incorrect. Sixteen bits equals two bytes, not one. Therefore, D, 8, is the correct answer.
Play from 1:10:05 Question 52. A family notices their home internet has become sluggish. After signing in to the router's admin page, they find several devices they do not recognize on the network. What should they do to stop strangers from using the connection? Here are the options. Option A. Reach out to the service provider's help desk. Option B. Change the password. Option C. Reduce how far the wireless signal reaches. Option D. Reset the router. Pause the video now if you want time to think about the answer.
The correct answer is B. Change the password. Setting a new Wi-Fi password cuts off the unknown devices and keeps anyone who lacks the new password from joining. The family can do this themselves in a few minutes. Now, why are the other options incorrect? Option A is incorrect. The provider cannot fix this, since the problem is who has the Wi-Fi password and the family controls that. Option C is incorrect. A smaller range does not remove devices already connected, and nearby intruders could still join. Option D is incorrect. A factory reset wipes all settings and brings back the default password, which could leave the network just as open. Therefore, B, Change the password, is the correct answer.
Play from 1:11:38 Question 53. While writing an application, a developer defines a value that is set once and never changes while the program runs. What is this concept called? Here are the options. Option A. Array. Option B. Object. Option C. Constant. Option D. Variable. Pause the video now if you want time to think about the answer.
The correct answer is C. Constant. A constant holds a value that stays fixed for the whole run of the program. A value that never changes is exactly what a constant is. Now, why are the other options incorrect? Option A is incorrect. An array holds a list of several values, not one fixed value. Option B is incorrect. An object bundles data with actions, and its contents are not required to stay fixed. Option D is incorrect. A variable is made so that its value can change as the program runs. Therefore, C, Constant, is the correct answer.
Play from 1:12:51 Question 54. Which kind of language describes content using tags instead of programming statements? Here are the options. Option A. Compiled. Option B. Markup. Option C. Query. Option D. Assembly. Pause the video now if you want time to think about the answer.
The correct answer is B. Markup. Markup languages, like the one used to build web pages, wrap content in tags that label its structure and meaning. They describe content rather than carry out instructions. Now, why are the other options incorrect? Option A is incorrect. Compiled languages are written as ordinary program statements and turned into machine code. Option C is incorrect. Query languages use commands to ask databases for data, not tags. Option D is incorrect. Assembly uses short machine-level instructions, not tags. Therefore, B, Markup, is the correct answer.
Play from 1:14:06 Question 55. After unboxing a brand-new wireless router at home, what should the owner change first? Here are the options. Option A. Channel. Option B. Default password. Option C. Gateway. Option D. IP settings. Pause the video now if you want time to think about the answer.
The correct answer is B. Default password. A new router ships with a known factory password that anyone can look up. Replacing it first keeps strangers from taking over the device while the rest is set up. Now, why are the other options incorrect? Option A is incorrect. Choosing a wireless channel affects performance and can wait until the router is secured. Option C is incorrect. Gateway details are ordinary network settings that can be handled after the login is secured. Option D is incorrect. Addressing can be set after the router is protected with a new password. Therefore, B, Default password, is the correct answer.
Play from 1:15:25 Question 56. A small business owner is weighing flat files against databases. Which statement is accurate? Here are the options. Option A. Databases offer stronger structure, faster lookups through indexes, and query support. Option B. A database is the more efficient choice when storing only a small amount of data. Option C. A flat file is built on a relational design. Option D. A flat file is searched using a query language. Pause the video now if you want time to think about the answer.
The correct answer is A. Databases offer stronger structure, faster lookups through indexes, and query support. Databases are designed with organized tables, indexes for quick searching, and a query language for pulling data. Flat files are plain and simple, so they lack those abilities. Now, why are the other options incorrect? Option B is incorrect. For small amounts of data a simple flat file is usually easier and lighter. Databases pay off as data grows. Option C is incorrect. Relational designs link multiple tables, which is a database feature. A flat file is just one plain table or text file. Option D is incorrect. Query languages belong to databases. Flat files have no built-in way to run queries. Therefore, A, Databases offer stronger structure, faster lookups through indexes, and query support, is the correct answer.
Play from 1:17:17 Question 57. A user clicks a link to open a report on a company website, but nothing appears to happen. Which browser setting needs to be adjusted so the report can open? Here are the options. Option A. Cache clearing. Option B. Private browsing. Option C. Accessibility options. Option D. Pop-up blocker. Pause the video now if you want time to think about the answer.
The correct answer is D. Pop-up blocker. Many reports open in a new window or tab, and a pop-up blocker can quietly stop that from happening. Allowing pop-ups for the site lets the link work. Now, why are the other options incorrect? Option A is incorrect. Clearing the cache removes stored page data and does not stop a link from opening a window. Option B is incorrect. A private window only skips saving history and does not block links. Option C is incorrect. Accessibility options change how pages look or are read aloud, not whether links open. Therefore, D, Pop-up blocker, is the correct answer.
Play from 1:18:37 Question 58. Which form of encryption secures data stored on a drive, rather than data moving across a network? Here are the options. Option A. Plaintext. Option B. File-level. Option C. HTTPS. Option D. VPN. Pause the video now if you want time to think about the answer.
The correct answer is B. File-level. File-level encryption locks the files or folders saved on a disk. This protects data at rest, so a stolen drive still cannot be read. Now, why are the other options incorrect? Option A is incorrect. Plaintext is data that is not encrypted at all, so it gives no protection. Option C is incorrect. HTTPS protects web traffic while it travels, not files sitting on a disk. Option D is incorrect. A VPN protects data as it moves over a network, not data kept in storage. Therefore, B, File-level, is the correct answer.
Play from 1:19:53 Question 59. A security admin wants to confirm that a particular person was successfully authenticated by a web server. Which item should be reviewed? Here are the options. Option A. Browser history. Option B. Firewall. Option C. Account logs. Option D. Permissions. Pause the video now if you want time to think about the answer.
The correct answer is C. Account logs. Account logs record each sign-in attempt, whether it worked or failed, and when it happened. Reading them shows if the web server accepted that person. Now, why are the other options incorrect? Option A is incorrect. Browser history lists pages visited and says nothing about whether the server accepted a login. Option B is incorrect. A firewall filters network traffic and does not keep track of who logged in to the web server. Option D is incorrect. Permissions describe what a person may do after signing in, not whether the sign-in succeeded. Therefore, C, Account logs, is the correct answer.
Play from 1:21:15 Question 60. In terms of the basic computing functions, how is a printer classified? Here are the options. Option A. Input. Option B. Storage. Option C. Output. Option D. Processing. Pause the video now if you want time to think about the answer.
The correct answer is C. Output. A printer takes digital information from the computer and turns it into something on paper. Devices that present results to the user are output devices. Now, why are the other options incorrect? Option A is incorrect. Input devices send information into the computer, but a printer sends information out. Option B is incorrect. Storage devices keep data for later use, while a printer only produces a paper copy. Option D is incorrect. Processing is done by the CPU, and a printer does not carry out that work. Therefore, C, Output, is the correct answer.
Play from 1:22:27 Question 61. A family is shopping for home internet and wants the quickest service on the market. Which connection type is most likely to deliver the highest speeds? Here are the options. Option A. Cable. Option B. Fiber optic. Option C. Satellite. Option D. DSL. Pause the video now if you want time to think about the answer.
The correct answer is B. Fiber optic. Fiber sends data as pulses of light through glass strands, which gives it far more capacity than the other home options. Plans of a gigabit and beyond are common, with very little delay. It is not offered everywhere, but where it exists it is the quickest choice. Now, why are the other options incorrect? Option A is incorrect. Cable is quicker than DSL but still tops out below what fiber can deliver. Option C is incorrect. Satellite signals travel a long way, so delay is high and speeds are modest. Option D is incorrect. DSL runs over old phone lines and is slower than both cable and fiber. Therefore, B, Fiber optic, is the correct answer.
Play from 1:23:55 Question 62. In a computer's hardware, a graphics processing unit falls into which functional category? Here are the options. Option A. Processing. Option B. Input. Option C. Storage. Option D. Output. Pause the video now if you want time to think about the answer.
The correct answer is A. Processing. A GPU is a chip that does heavy calculation, especially graphics work that can be split into many small tasks at once. Because its job is to crunch data, it belongs in the processing category, not with devices that take data in, show it, or keep it. Now, why are the other options incorrect? Option B is incorrect. Input devices such as keyboards bring data in, while a GPU works on data it already has. Option C is incorrect. Storage holds data over time, while a GPU computes with it. Option D is incorrect. Output devices like monitors present results; the GPU only prepares the image that a display then shows. Therefore, A, Processing, is the correct answer.
Play from 1:25:17 Question 63. A small accounting firm wants to harden its staff phones against attacks that come over the internet, and it wants to act before any attack happens. Which measure fits best? Here are the options. Option A. Enabling cloud backup. Option B. Updating subscription software. Option C. Adding a remote access tool. Option D. Setting the device to install software updates on its own. Pause the video now if you want time to think about the answer.
The correct answer is D. Setting the device to install software updates on its own. When updates install on their own, security patches reach the phone as soon as they are released, so known weaknesses are closed before attackers can use them. That is action taken ahead of a threat. The other choices either help recover data after a loss, deal with paid apps, or add new risk. Now, why are the other options incorrect? Option A is incorrect. A backup helps you recover data after a problem but does not block online attacks. Option B is incorrect. Updating a paid app is routine upkeep and is not aimed at stopping threats. Option C is incorrect. A remote access tool opens another way into the device, which widens exposure. Therefore, D, Setting the device to install software updates on its own, is the correct answer.
Play from 1:27:03 Question 64. A developer is declaring variables in a program. Which of these values would be stored as a float? Here are the options. Option A. 12. Option B. abc. Option C. -2.34. Option D. 0. Pause the video now if you want time to think about the answer.
The correct answer is C. -2.34. A float holds numbers that have a fractional part, shown with a decimal point. The value negative 2.34 has digits after the point, so it is a float. Now, why are the other options incorrect? Option A is incorrect. Twelve is a whole number, which makes it an integer. Option B is incorrect. Letters like these are text, so this is a string. Option D is incorrect. Zero is a whole number with no fractional part, so it is an integer. Therefore, C, -2.34, is the correct answer.
Play from 1:28:19 Question 65. A builder is choosing parts for a compact PC. Which of these components commonly comes in the M.2 form factor? Here are the options. Option A. RAM. Option B. NIC. Option C. GPU. Option D. NVMe. Pause the video now if you want time to think about the answer.
The correct answer is D. NVMe. M.2 is a small card-shaped slot design used mainly for solid state drives, and NVMe drives are commonly built in this shape. The other parts listed normally use different connectors. Now, why are the other options incorrect? Option A is incorrect. Memory modules fit DIMM or SODIMM slots. Option B is incorrect. Network cards are usually PCIe or built into the board; M.2 is mainly associated with drives. Option C is incorrect. Graphics cards normally sit in a PCIe slot. Therefore, D, NVMe, is the correct answer.
Play from 1:29:41 Question 66. A homeowner carries a laptop down to the cellar level of the house and cannot join the home Wi-Fi there. What could explain the failure? Here are the options. Option A. Synchronization. Option B. Interference. Option C. Permission. Option D. Speed. Pause the video now if you want time to think about the answer.
The correct answer is B. Interference. Cellars are surrounded by concrete, earth, and metal, which absorb and reflect radio waves. Add the distance from the router and other devices on the same frequency, and this interference can weaken the signal enough that the laptop cannot connect. The other options do not explain a failure that happens in one spot. Now, why are the other options incorrect? Option A is incorrect. Syncing keeps data matched between devices and does not usually stop a Wi-Fi link. Option C is incorrect. A permission problem would be tied to the account, not to standing in one part of the house. Option D is incorrect. Speed describes how fast data moves once connected, not whether a link can be made. Therefore, B, Interference, is the correct answer.
Play from 1:31:10 Question 67. An employee signs in to a dozen different sites with one identical password. Which password policy would most directly stop this habit? Here are the options. Option A. Length. Option B. Privacy. Option C. Reuse. Option D. Complexity. Pause the video now if you want time to think about the answer.
The correct answer is C. Reuse. A reuse policy stops people from using the same password again, which directly targets the habit described. Complexity and length only set how strong a password must be, and privacy is not a recognized password policy. Now, why are the other options incorrect? Option A is incorrect. A length rule sets a minimum size but allows the same password everywhere. Option B is incorrect. Privacy is not a recognized password policy. Option D is incorrect. Complexity forces mixed character types but does not stop the same password being used on many sites. Therefore, C, Reuse, is the correct answer.
Play from 1:32:30 Question 68. Which hardware part carries out the instructions of the operating system? Here are the options. Option A. HDD. Option B. RAM. Option C. NIC. Option D. CPU. Pause the video now if you want time to think about the answer.
The correct answer is D. CPU. The CPU is the processor that fetches and carries out instructions from the operating system and from every program. It does the calculating that keeps the system running. The other parts only store data or move network traffic. Now, why are the other options incorrect? Option A is incorrect. A hard drive keeps data long term but does not run instructions. Option B is incorrect. Memory holds the programs and data in use but does not process them. Option C is incorrect. A network card links the computer to a network and does not run the operating system. Therefore, D, CPU, is the correct answer.
Play from 1:33:52 Question 69. A shopper wants to confirm that an online store's security certificate is valid, using only the web browser. What should the shopper do? Here are the options. Option A. Removing stored cookies and cached files. Option B. Opening the padlock icon beside the address. Option C. Turning on the pop-up blocking feature. Option D. Erasing the list of visited pages. Pause the video now if you want time to think about the answer.
The correct answer is B. Opening the padlock icon beside the address. Selecting the padlock beside the web address opens a panel showing the site's certificate, including who issued it and whether the browser trusts it. This is the usual way to check a certificate. Housekeeping actions like clearing data reveal nothing about it. Now, why are the other options incorrect? Option A is incorrect. Wiping stored site data frees space or resets sessions but shows nothing about the certificate. Option C is incorrect. A pop-up blocker only stops extra windows from opening. Option D is incorrect. Erasing the history removes a list of past visits and says nothing about whether a certificate is valid. Therefore, B, Opening the padlock icon beside the address, is the correct answer.
Play from 1:35:26 Question 70. An IT manager is explaining why the company schedules backups every night. What is the main benefit? Here are the options. Option A. Easily duplicating data onto a different server. Option B. Trying changes away from live systems. Option C. Restoring lost files. Option D. Producing a spare copy that is simple to share. Pause the video now if you want time to think about the answer.
The correct answer is C. Restoring lost files. The main point of keeping regular backups is being able to get data back after it is deleted, corrupted, or lost. Moving data around, testing, or sharing may be possible with a copy, but those are side uses, not the reason backups are made. Now, why are the other options incorrect? Option A is incorrect. A backup might ease a move to another server, but that is a side effect, not the main purpose. Option B is incorrect. A copy can be used for trial runs, yet backups are not made mainly for that. Option D is incorrect. Sharing is not why backups are made; they are kept for recovery. Therefore, C, Restoring lost files, is the correct answer.
Play from 1:37:00 Question 71. A support technician is briefing a new hire on network adapters. What is the key way an onboard NIC differs from one that plugs into an expansion slot? Here are the options. Option A. An onboard NIC always outperforms an add-in card. Option B. An onboard NIC is part of the motherboard itself. Option C. An onboard NIC is a separate card that plugs into the board. Option D. An onboard NIC costs more than an add-in card. Pause the video now if you want time to think about the answer.
The correct answer is B. An onboard NIC is part of the motherboard itself. The key difference is where the NIC lives. An onboard NIC is part of the motherboard from the factory, while an expansion NIC is a separate card that you plug into a slot. Now, why are the other options incorrect? Option A is incorrect. Neither type is faster by nature; current versions of both can reach comparable speeds. Option C is incorrect. That describes an expansion card NIC, so the statement is backwards. Option D is incorrect. Price is not the defining difference, and onboard NICs usually add little or no cost. Therefore, B, An onboard NIC is part of the motherboard itself, is the correct answer.
Play from 1:38:43 Question 72. A student is writing the value thirteen in several number bases. Which numbering system needs the fewest characters to write it? Here are the options. Option A. Octal. Option B. Decimal. Option C. Binary. Option D. Hexadecimal. Pause the video now if you want time to think about the answer.
The correct answer is D. Hexadecimal. Thirteen is 1101 in binary, which is four digits. It is 15 in octal and 13 in decimal, both two digits. In hexadecimal it is the single letter D. Hexadecimal has the largest base, with sixteen symbols, so it fits every value up to fifteen in one character. Now, why are the other options incorrect? Option A is incorrect. Octal writes thirteen as 15, which takes two characters. Option B is incorrect. Decimal needs two characters, a one and a three, while hexadecimal needs only one. Option C is incorrect. Binary needs four characters, 1101. Therefore, D, Hexadecimal, is the correct answer.
Play from 1:40:07 Question 73. A retailer turns its collected figures into summaries that help executives choose strategy. Which term best describes this? Here are the options. Option A. Data capture. Option B. Monetization. Option C. Meaningful reporting. Option D. Data minimization. Pause the video now if you want time to think about the answer.
The correct answer is C. Meaningful reporting. Meaningful reporting means turning gathered data into summaries and insights that help leaders make choices. Handing executives useful information so they can steer the business is exactly that. Now, why are the other options incorrect? Option A is incorrect. Capture is only the gathering stage and does not involve presenting findings to leaders. Option B is incorrect. Monetization is about earning money from data, not informing internal decisions. Option D is incorrect. Minimization means limiting how much data is collected and kept, which is a privacy practice, not a decision-support one. Therefore, C, Meaningful reporting, is the correct answer.
Play from 1:41:32 Question 74. A receptionist picks up a USB drive in the lobby and connects it to a laptop, but the laptop shows no sign of it. What is the most probable cause? Here are the options. Option A. Account permissions. Option B. Insufficient memory. Option C. Anti-malware. Option D. Disabled port. Pause the video now if you want time to think about the answer.
The correct answer is D. Disabled port. If a USB port has been switched off, nothing plugged into it will show up. Ports can be turned off in firmware settings, in device management, or by administrator policy. That makes a disabled port the likeliest reason. Now, why are the other options incorrect? Option A is incorrect. Permissions control what files or programs a user may open, not whether the hardware is noticed. Option B is incorrect. Low memory may slow things down but does not stop a USB device from being recognized. Option C is incorrect. Security software scans or blocks files, but it does not normally stop the system from seeing the device itself. Therefore, D, Disabled port, is the correct answer.
Play from 1:43:05 Question 75. A homeowner installs a thermostat that can be adjusted from a phone app. Which device category does it belong to? Here are the options. Option A. Security. Option B. IoT. Option C. Networking. Option D. VR. Pause the video now if you want time to think about the answer.
The correct answer is B. IoT. A thermostat that connects to the home network, senses temperature, and can be controlled remotely is an Internet of Things device. IoT covers everyday objects with built-in connectivity and sensors. Now, why are the other options incorrect? Option A is incorrect. Security describes a purpose such as cameras or locks, while a thermostat's main job is climate control. Option C is incorrect. Networking gear like routers and switches builds the network; a thermostat is a device that uses it. Option D is incorrect. Virtual reality is about immersive headsets and has nothing to do with heating control. Therefore, B, IoT, is the correct answer.
Play from 1:44:30 Question 76. A marketing assistant keeps seeing an outdated version of a company web page, even after pressing refresh several times, though the site has been updated. What is the best fix? Here are the options. Option A. Clear the cache. Option B. Synchronize the profile. Option C. Turn on the pop-up blocker. Option D. Disable browser extensions. Pause the video now if you want time to think about the answer.
The correct answer is A. Clear the cache. Browsers keep saved copies of pages so they load faster, and a saved copy can become outdated. A normal refresh may keep serving that copy. Clearing the cache removes it, so the browser requests the latest version from the website. Now, why are the other options incorrect? Option B is incorrect. Syncing a profile moves bookmarks and settings between devices and does not change saved page copies. Option C is incorrect. A pop-up blocker stops unwanted windows and has no effect on stored pages. Option D is incorrect. Turning off add-ons can fix some display glitches but does not remove the saved old copy of the page. Therefore, A, Clear the cache, is the correct answer.
Play from 1:46:06 Question 77. A manufacturer wants to build useful reports to guide its business choices. Which step must come first? Here are the options. Option A. Data correlation. Option B. Data collection. Option C. Data monetization. Option D. Data analytics. Pause the video now if you want time to think about the answer.
The correct answer is B. Data collection. Before anything can be analyzed or reported, information has to be gathered. Collection comes first, and analysis, correlation, and any later monetization all depend on that data existing. Now, why are the other options incorrect? Option A is incorrect. Finding links between data points needs data that was already gathered. Option C is incorrect. Earning money from data is a later goal that follows gathering and analysis. Option D is incorrect. Analysis works on data that has been gathered, so it follows collection. Therefore, B, Data collection, is the correct answer.
Play from 1:47:31 Question 78. An administrator runs several virtual machines on a single physical server. What divides up and controls the hardware resources given to each VM? Here are the options. Option A. SaaS. Option B. Guest OS. Option C. PaaS. Option D. Hypervisor. Pause the video now if you want time to think about the answer.
The correct answer is D. Hypervisor. The hypervisor is the software layer between the physical hardware and the virtual machines. It hands out processor time, memory, storage, and network access to each VM and keeps them separate. Guest operating systems run inside a VM, and PaaS and SaaS are ways of delivering cloud services. Now, why are the other options incorrect? Option A is incorrect. SaaS delivers finished applications over the internet and does not allocate VM resources. Option B is incorrect. The guest operating system runs inside the virtual machine and does not decide how resources are shared. Option C is incorrect. PaaS is a cloud service model for building applications and does not manage the resources of individual VMs. Therefore, D, Hypervisor, is the correct answer.
Play from 1:49:03 Question 79. A security analyst reads through log records to count how often one employee signed in to the corporate network. Which security concept does this reflect? Here are the options. Option A. Authentication. Option B. Non-repudiation. Option C. Accounting. Option D. Authorization. Pause the video now if you want time to think about the answer.
The correct answer is C. Accounting. Accounting is the part of security that records what users do, such as when they sign in and how long they stay. Counting a person's logons from log files uses that recorded activity, which supports auditing. Now, why are the other options incorrect? Option A is incorrect. Authentication proves who someone is at sign in; it does not tally earlier sign ins. Option B is incorrect. Non-repudiation stops someone from denying an action, while here the goal is just counting logons. Option D is incorrect. Authorization sets what a verified user may access, not how often they logged on. Therefore, C, Accounting, is the correct answer.
Play from 1:50:34 Question 80. A technician is choosing a drive to install inside a desktop. It must not use magnetic media, must keep its data without power, and must not rely on optical discs. Which option fits? Here are the options. Option A. NAS. Option B. HDD. Option C. RAM. Option D. SSD. Pause the video now if you want time to think about the answer.
The correct answer is D. SSD. An SSD stores data in flash chips, so it has no magnetic platters, keeps data when power is off, and uses no laser or disc. It also installs inside a workstation, so it satisfies all three conditions. Now, why are the other options incorrect? Option A is incorrect. A NAS is a storage box reached over the network rather than a drive installed locally. Option B is incorrect. A hard disk records data magnetically, which breaks the first condition. Option C is incorrect. RAM loses its contents when power is cut, so it is volatile. Therefore, D, SSD, is the correct answer.
Play from 1:52:04 Question 81. A guesthouse owner in a mountain valley has no buried lines or cell towers anywhere nearby, yet guests expect internet access. Which connection type fits this site best? Here are the options. Option A. Satellite. Option B. Cellular. Option C. DSL. Option D. Fiber optic. Pause the video now if you want time to think about the answer.
The correct answer is A. Satellite. Satellite service reaches any site with an open view of the sky, so it needs no local lines or towers. That makes it the practical pick for a valley with neither. Now, why are the other options incorrect? Option B is incorrect. It depends on nearby towers, and the site has none. Option C is incorrect. It runs over telephone wiring, which the site lacks. Option D is incorrect. It needs physical glass cable run to the building, and no cabling exists there. Therefore, A, Satellite, is the correct answer.
Play from 1:53:18 Question 82. A bookkeeper at a small firm opens a downloaded attachment that is later found to be infected. Which tool is best suited to find and remove the threat on that computer? Here are the options. Option A. Firewall. Option B. Patching. Option C. Anti-malware. Option D. Permissions. Pause the video now if you want time to think about the answer.
The correct answer is C. Anti-malware. Anti-malware software scans files on the machine, spots malicious code, and quarantines or deletes it. It is the one choice that deals with an infection that is already sitting on the computer. Now, why are the other options incorrect? Option A is incorrect. It filters traffic crossing the network and cannot clean a file already saved locally. Option B is incorrect. It closes known software holes but does not clear out malicious files already present. Option D is incorrect. They limit what accounts may access, yet they never detect or delete a harmful file. Therefore, C, Anti-malware, is the correct answer.
Play from 1:54:43 Question 83. A student in a library writes an essay by pressing keys on a keyboard. Which stage of computing does this activity represent? Here are the options. Option A. Storage. Option B. Input. Option C. Processing. Option D. Output. Pause the video now if you want time to think about the answer.
The correct answer is B. Input. Pressing keys sends data from a person into the computer, and that is what input means. The keyboard is an input device, so typing belongs to this stage. Now, why are the other options incorrect? Option A is incorrect. Storage means saving data for later, which happens after the typing is done. Option C is incorrect. Processing is the computer working on the data internally, not the person entering it. Option D is incorrect. Output is what the computer presents back to the user, such as text on a screen. Therefore, B, Input, is the correct answer.
Play from 1:56:02 Question 84. A law firm sets up offsite backups so its trade secret files survive a flood or earthquake. How is this data best classified? Here are the options. Option A. Big data. Option B. Monetized. Option C. Correlated. Option D. Critical. Pause the video now if you want time to think about the answer.
The correct answer is D. Critical. Critical data is information the organization cannot afford to lose because its work depends on it. Trade secrets fit that description, which explains why extra backup effort is justified. Now, why are the other options incorrect? Option A is incorrect. This term is about very large volumes of data, not about how important the data is. Option B is incorrect. It means data that is sold or used to earn revenue, not data that must be safeguarded. Option C is incorrect. It describes data sets that show a relationship to one another, not their level of importance. Therefore, D, Critical, is the correct answer.
Play from 1:57:25 Question 85. After unboxing a new laptop, an employee wants to make it more secure. What should the employee do next? Here are the options. Option A. Install drivers. Option B. Configure backups. Option C. Remove unnecessary software. Option D. Perform benchmark testing. Pause the video now if you want time to think about the answer.
The correct answer is C. Remove unnecessary software. New laptops often ship with extra trial programs and preloaded apps that nobody needs. Each one is another possible weak spot, so uninstalling them shrinks the area an attacker could target. Now, why are the other options incorrect? Option A is incorrect. Drivers help hardware work properly and do not make the laptop safer. Option B is incorrect. Backups protect data from loss but do not reduce the weaknesses on the system itself. Option D is incorrect. Benchmarks only measure speed and have no effect on security. Therefore, C, Remove unnecessary software, is the correct answer.
Play from 1:58:52 Question 86. A technician is building a patch cable to a custom length for an office. Which item is used at the very end of the process? Here are the options. Option A. Crimper. Option B. Cable tester. Option C. Wire cutter. Option D. Ethernet connector. Pause the video now if you want time to think about the answer.
The correct answer is B. Cable tester. You cut the cable, prepare the wires, seat them in the connector, and crimp it. Only then do you plug the finished cable into a tester to confirm every wire is connected correctly. Now, why are the other options incorrect? Option A is incorrect. It is used to fasten the connector on, which must be finished before any testing. Option C is incorrect. It is used at the start to trim the cable to the length needed. Option D is incorrect. It is fitted onto the wires during assembly, well before the final check. Therefore, B, Cable tester, is the correct answer.
Play from 2:00:10 Question 87. A messaging app suggests the next word while you type. Which technology makes that suggestion possible? Here are the options. Option A. Artificial intelligence. Option B. Extensions. Option C. Generated code. Option D. Big data. Pause the video now if you want time to think about the answer.
The correct answer is A. Artificial intelligence. Predictive text relies on AI models that learn from language patterns and what the user has typed so far. They use that learning to guess the word or phrase likely to come next. Now, why are the other options incorrect? Option B is incorrect. They are add-ons that give a program extra features and are not what predicts words. Option C is incorrect. It is program code produced by a tool, not the method that guesses upcoming text. Option D is incorrect. It refers to handling huge data collections and does not itself make predictions about typing. Therefore, A, Artificial intelligence, is the correct answer.
Play from 2:01:32 Question 88. A commuter wants a portable gadget dedicated only to reading digital books. Which device is the best choice? Here are the options. Option A. Tablet. Option B. Laptop. Option C. VR system. Option D. E-reader. Pause the video now if you want time to think about the answer.
The correct answer is D. E-reader. An e-reader is built for one job, which is reading books, and its screen is easy on the eyes over long sessions. The other devices can show books but are made for many other purposes. Now, why are the other options incorrect? Option A is incorrect. It handles many tasks such as video, games, and apps, so it is not made only for books. Option B is incorrect. It is a general-purpose computer meant for all kinds of work. Option C is incorrect. It is built for immersive virtual environments, not for reading books. Therefore, D, E-reader, is the correct answer.
Play from 2:02:50 Question 89. A remote worker needs everything sent between home and the office to travel through a protected, scrambled path. Which technology builds that kind of tunnel? Here are the options. Option A. HTTPS. Option B. Compression. Option C. VPN. Option D. Ciphertext. Pause the video now if you want time to think about the answer.
The correct answer is C. VPN. A virtual private network wraps traffic in encryption and carries it through a private tunnel across the internet. Anyone watching the connection in between cannot read the data. Now, why are the other options incorrect? Option A is incorrect. It secures web page traffic only and does not form a tunnel for all data. Option B is incorrect. It makes files smaller and offers no encryption or tunnel. Option D is incorrect. It is just the scrambled output of encryption, not something that builds a tunnel. Therefore, C, VPN, is the correct answer.
Play from 2:04:11 Question 90. A systems administrator needs to change how the drives in a workstation are partitioned and formatted. Which operating system function should be used? Here are the options. Option A. Disk management. Option B. Process management. Option C. Device management. Option D. Task management. Pause the video now if you want time to think about the answer.
The correct answer is A. Disk management. Disk management is the built-in tool for working with storage drives. It lets you create or resize partitions, format volumes, and assign drive letters. Now, why are the other options incorrect? Option B is incorrect. It deals with how running programs are scheduled and given resources, not with drives. Option C is incorrect. It covers hardware drivers and attached peripherals, not how storage is laid out. Option D is incorrect. It is about watching active tasks and does not change storage layout. Therefore, A, Disk management, is the correct answer.
Play from 2:05:33 Question 91. An intern needs a place on a computer where typed instructions are accepted and run. Which item provides that? Here are the options. Option A. Attributes. Option B. Services. Option C. Console. Option D. Process. Pause the video now if you want time to think about the answer.
The correct answer is C. Console. A console is a text window where a person types commands and the system carries them out. Command prompt and terminal windows are common examples. Now, why are the other options incorrect? Option A is incorrect. They are properties that describe an object and cannot take commands. Option B is incorrect. They are programs running quietly in the background and give no place to type commands. Option D is incorrect. It is a program currently running, not an interface for entering instructions. Therefore, C, Console, is the correct answer.
Play from 2:06:46 Question 92. A gamer compares home internet types. Which one is known for the worst delay between sending a request and getting a reply? Here are the options. Option A. Fiber. Option B. Cable. Option C. DSL. Option D. Satellite. Pause the video now if you want time to think about the answer.
The correct answer is D. Satellite. Satellite signals must travel up to an orbiting satellite and back down to earth. That very long trip adds a noticeable lag that ground-based connections do not have. Now, why are the other options incorrect? Option A is incorrect. It sends light through glass cable over short ground distances and has the lowest lag of the group. Option B is incorrect. It uses ground-based coaxial lines and has only a small delay. Option C is incorrect. It runs over ground-based phone lines and has a modest delay, far below satellite. Therefore, D, Satellite, is the correct answer.
Play from 2:08:05 Question 93. A department head plans to share quarterly updates with staff gathered in a conference room. Which category of software is the best fit? Here are the options. Option A. Conferencing. Option B. Visual diagramming. Option C. Presentation. Option D. Word processing. Pause the video now if you want time to think about the answer.
The correct answer is C. Presentation. Presentation software lets a speaker lay out slides with text and visuals to show to a room. It is made for delivering information to an audience live. Now, why are the other options incorrect? Option A is incorrect. It connects people who are in different places and is not built for organizing content to present. Option B is incorrect. It is for drawing flowcharts and technical diagrams, not for presenting general updates. Option D is incorrect. It produces written documents, not slides meant to be shown to a group. Therefore, C, Presentation, is the correct answer.
Play from 2:09:26 Question 94. An IT support specialist needs to set up a program on the computer of a coworker who works in another city. Which kind of software is the specialist using? Here are the options. Option A. Instant messaging. Option B. Conferencing. Option C. Collaboration. Option D. Remote support. Pause the video now if you want time to think about the answer.
The correct answer is D. Remote support. Remote support tools let a technician connect to and control another computer over a network. That allows software to be installed and problems fixed without being in the same place. Now, why are the other options incorrect? Option A is incorrect. It only exchanges typed messages and cannot install programs on another machine. Option B is incorrect. It is meant for audio and video meetings and does not give control of a distant computer. Option C is incorrect. It supports teamwork and file sharing, not taking over a computer to install software. Therefore, D, Remote support, is the correct answer.
Play from 2:10:46 Question 95. A school IT aide revokes folder access for pupils who have no need for a shared drive. Which security concept does this reflect? Here are the options. Option A. Single sign-on. Option B. Least privilege model. Option C. Non-repudiation. Option D. Multifactor authentication. Pause the video now if you want time to think about the answer.
The correct answer is B. Least privilege model. Under least privilege, people get only the access they need for their role and nothing more. Taking the shared drive away from pupils who do not use it applies exactly that idea. Now, why are the other options incorrect? Option A is incorrect. It lets people log in once for several systems, which has nothing to do with limiting access. Option C is incorrect. It prevents someone from denying an action they took, rather than limiting what they can reach. Option D is incorrect. It asks for more than one proof of identity at login and does not decide how much access a person gets. Therefore, B, Least privilege model, is the correct answer.
Play from 2:12:13 Question 96. Which of these digital storage units holds the least data? Here are the options. Option A. Kilobyte. Option B. Terabyte. Option C. Megabyte. Option D. Petabyte. Pause the video now if you want time to think about the answer.
The correct answer is A. Kilobyte. Storage units grow in steps of about one thousand each time. Of the four listed, the kilobyte sits lowest, below the megabyte, then the terabyte, then the petabyte. Now, why are the other options incorrect? Option B is incorrect. It is far larger than a kilobyte, about a billion times larger. Option C is incorrect. It is about a thousand times larger than a kilobyte. Option D is incorrect. It is the biggest of the four listed units. Therefore, A, Kilobyte, is the correct answer.
Play from 2:13:20 Question 97. A developer writes code in which an object fetches a list of client names from a database. What term describes the part of the object that does the fetching? Here are the options. Option A. Method. Option B. Looping. Option C. Variable. Option D. Attribute. Pause the video now if you want time to think about the answer.
The correct answer is A. Method. A method is a block of code that belongs to an object and performs an action. Fetching names from a database is an action, so it is carried out by a method. Now, why are the other options incorrect? Option B is incorrect. It is a way to repeat code and is not the part of an object that carries out a task. Option C is incorrect. It only holds a value and does not perform actions such as querying a database. Option D is incorrect. It is a property that describes an object, not an action the object carries out. Therefore, A, Method, is the correct answer.
Play from 2:14:40 Question 98. A technician shuts down a desktop computer for the night. Which component loses its contents and starts out empty at the next power-on? Here are the options. Option A. CPU. Option B. RAM. Option C. BIOS. Option D. NIC. Pause the video now if you want time to think about the answer.
The correct answer is B. RAM. RAM is volatile, meaning it needs power to hold anything. When the computer is switched off, everything in it disappears and it begins empty on the next start. Now, why are the other options incorrect? Option A is incorrect. It is a processor and keeps no user data in memory that must be wiped at shutdown. Option C is incorrect. Its settings are kept in non-volatile storage and stay in place when power is off. Option D is incorrect. The network card keeps its firmware and identity after the computer is turned off. Therefore, B, RAM, is the correct answer.
Play from 2:16:01 Question 99. Which scenario is the clearest example of storing data? Here are the options. Option A. Identification numbers marked on circuit boards. Option B. Live program details listed in Task Manager. Option C. Information held in RAM while programs run. Option D. Business documents kept on a hard drive. Pause the video now if you want time to think about the answer.
The correct answer is D. Business documents kept on a hard drive. Data storage means keeping information on media that holds it even when the power is off. Documents saved to a hard drive stay available for the long term, which fits that definition. Now, why are the other options incorrect? Option A is incorrect. These are labels for identifying parts and do not store user data. Option B is incorrect. Task Manager shows what is running right now, not information kept for later. Option C is incorrect. RAM is temporary and empties as soon as power is lost. Therefore, D, Business documents kept on a hard drive, is the correct answer.
Play from 2:17:29 Question 100. A payroll program must hold the total pay an employee earns in a week. Which data type should that variable use? Here are the options. Option A. Integer. Option B. Boolean. Option C. Float. Option D. Character. Pause the video now if you want time to think about the answer.
The correct answer is C. Float. Pay amounts usually include cents, so the value needs a data type that can hold decimals. A float does that. Now, why are the other options incorrect? Option A is incorrect. It holds whole numbers only, so cents would be lost. Option B is incorrect. It holds just true or false and cannot represent an amount of money. Option D is incorrect. It holds a single letter or symbol, not a number that can be used in pay calculations. Therefore, C, Float, is the correct answer.
