100 Free A+ Core 1 220-1201 Practice Questions and Answers
100 questions for the A+ Core 1 220-1201 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 solid state drive has no moving parts, so it cannot make a ticking noise.
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Why B is wrong
Bad memory shows up as startup errors or crashes, not mechanical noises.
Right, C is the answer.
Why C is right
A ticking noise together with a very slow startup points to a mechanical hard drive whose read head is struggling over a damaged platter. The drive is failing physically, so it needs replacement.
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Why D is wrong
A failing fan whirs or grinds and would not slow down the loading of the operating system.
Question 2 Play from 01:21
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Why A is wrong
Wi-Fi gives devices network access and is not a tagging system for counting equipment.
Right, B is the answer.
Why B is right
RFID tags can be fixed to equipment and scanned from a distance without a clear line of sight, which suits automated counting of what a company owns. The other choices are built for different jobs.
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Why C is wrong
NFC only works across a few centimeters, which makes bulk counting impractical.
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Why D is wrong
Bluetooth pairs personal gadgets over a short link and is not meant for managing a stock list.
Question 3 Play from 02:41
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Why A is wrong
Ribbons belong to impact printers and have nothing to do with the paper path of a modern office machine.
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Why B is wrong
A bad print head damages print quality, but it does not stop sheets from feeding.
Right, C is the answer.
Why C is right
Constant jams usually come from worn paper-handling parts like pickup rollers and separation pads. The maintenance kit bundles fresh versions of those parts, so it cures the underlying wear.
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Why D is wrong
New consumables fix faded or streaky output, not paper getting caught in the feed.
Question 4 Play from 04:07
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Why A is wrong
Both generations come in single sided and double sided versions, so that does not separate them.
Right, B is the answer.
Why B is right
DDR4 runs at about 1.2 volts, while DDR3 needs around 1.5 volts, so DDR4 uses less power and gives off less heat. That voltage drop is the dependable way to tell the two generations apart.
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Why C is wrong
The DIMM form factor is about the same length, so width is not what changed.
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Why D is wrong
DDR4 actually pulls less power than DDR3, the reverse of this statement.
Question 5 Play from 05:40
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Why A is wrong
The tubes and radiator add clutter rather than removing it.
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Why B is wrong
A wireless adapter concerns network access and says nothing about how many internal cables appear.
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Why C is wrong
Each drive still needs its own power and data leads that stay in view.
Right, D is the answer.
Why D is right
A power supply with detachable cables lets the builder plug in only the leads the parts need, so nothing extra dangles inside the case. The other choices still add visible wiring or do not affect cabling.
Question 6 Play from 07:07
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Why A is wrong
Standard USB-A ports were built for data and power and have no video mode.
Right, B is the answer.
Why B is right
Only USB-C can carry video, thanks to modes such as DisplayPort Alternate Mode and Thunderbolt that run over the same connector. The older USB connectors move data and power only.
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Why C is wrong
MicroUSB in its usual form does not output video.
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Why D is wrong
MiniUSB is a dated connector with no video capability.
Question 7 Play from 08:24
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Why A is wrong
A wrong refresh rate shows as flicker or no picture, not a permanent dark spot.
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Why B is wrong
A damaged cable produces flicker, odd colors, or lost signal, not a single fixed speck.
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Why C is wrong
Burn-in leaves a faded outline of a picture that was displayed for a long time, not one sharp dot.
Right, D is the answer.
Why D is right
A pixel that has died stays dark in the same spot whatever is shown, because that tiny cell no longer lights up. Seeing it on every connected computer places the fault inside the panel, not the signal.
Question 8 Play from 09:56
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Why A is wrong
An optical network terminal ends a fiber line at a building and does not power or wire cameras.
Right, B is the answer.
Why B is right
Power over Ethernet sends electricity and data down the same network cable, so each camera needs no separate power run. The other items do not cut down on cabling to a camera.
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Why C is wrong
A network interface card is just an adapter and supplies no power.
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Why D is wrong
DSL is a way of getting broadband over telephone lines and does nothing for camera wiring.
Question 9 Play from 11:18
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Why A is wrong
Coax is an unusual choice for new network runs and does not meet the requirement just by being coaxial.
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Why B is wrong
Fiber is chosen for speed and reach, not because it solves the fire safety rule for air spaces.
Right, C is the answer.
Why C is right
Cable made for plenum spaces has a jacket that resists fire and gives off little smoke, which building codes require in the air-handling area above a suspended ceiling.
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Why D is wrong
Shielding fights electrical interference and does not give the jacket a fire rating.
Question 10 Play from 12:43
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Why A is wrong
DSL is a type of internet connection, not an address.
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Why B is wrong
An IP address is configured by an administrator or a DHCP server and says nothing about the card maker.
Right, C is the answer.
Why C is right
The MAC address is set into the network card at the factory, and its first half is an organizationally unique identifier that names the maker. IP addresses and APIPA ones are assigned by software, and DSL is a line technology.
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Why D is wrong
APIPA addresses are chosen by the operating system when DHCP is unavailable, so they are not burned in.
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Question 11 Play from 14:10
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Why A is wrong
LDAP looks up directory entries such as user accounts and is not a file sharing service.
Right, B is one of the answers.
Why B is right
SMB and FTP both let machines running different operating systems copy and share files from a host. SMB powers Windows sharing yet is also available on Linux and macOS, and FTP works across practically any platform.
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Why C is wrong
NTP keeps clocks in sync.
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Why D is wrong
RDP opens a remote desktop session instead of sharing files.
Right, E is one of the answers.
Why E is right
SMB and FTP both let machines running different operating systems copy and share files from a host. SMB powers Windows sharing yet is also available on Linux and macOS, and FTP works across practically any platform.
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Why F is wrong
IMAP retrieves email from a mail server.
Question 12 Play from 15:41
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Why A is wrong
NFC works over only a few centimeters and is used for tapping, not for internet service.
Right, B is the answer.
Why B is right
A SIM card, in a laptop with a built-in cellular modem, lets the machine join 4G or 5G networks directly, with no extra hardware.
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Why C is wrong
Bluetooth links nearby accessories and cannot give a laptop its own mobile data service.
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Why D is wrong
A hotspot relies on another device already sharing its connection, which the user wants to avoid.
Question 13 Play from 17:02
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Why A is wrong
A fixed IP only matters when the printer sits on a network.
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Why B is wrong
Secure release protects documents on shared printers and is not needed for a lone user.
Right, C is the answer.
Why C is right
With only one computer needing the printer, a direct USB link is the simplest answer, since it avoids any network setup or addressing.
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Why D is wrong
The driver language does not decide how the printer connects to the PC.
Question 14 Play from 18:23
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Why A is wrong
DSL runs over telephone wiring on the ground, so delays stay modest compared with a satellite.
Right, B is the answer.
Why B is right
A satellite link makes data travel thousands of miles up to orbit and back, so each round trip takes hundreds of milliseconds. The other services use ground-based lines with far shorter delays.
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Why C is wrong
Cable internet travels over local coax lines and delivers low delay.
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Why D is wrong
Fiber carries light over ground-based glass strands and has about the lowest delay available.
Question 15 Play from 19:39
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Why A is wrong
RDP is a protocol for reaching a remote desktop, not a way to host virtual servers.
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Why B is wrong
Containers package apps on a shared operating system kernel and are not full virtual machines.
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Why C is wrong
A VLAN splits a network into segments and does not create virtual machines.
Right, D is the answer.
Why D is right
A hypervisor is the layer that abstracts the physical hardware so that many virtual machines can run on one box. Without it the hardware cannot be divided up into VMs.
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Why E is wrong
VDI delivers desktops to users, a service built on top of virtualization, not the layer that makes it possible.
Question 16 Play from 21:10
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Right, A is the answer.
Why A is right
A Layer 3 switch routes between VLANs inside its own switching hardware, so one unit covers both jobs at wire speed. No separate router has to be bought or cabled in.
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Why B is wrong
A standalone router could connect the VLANs but adds another box and usually forwards more slowly than a switch.
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Why C is wrong
It defends against flooding attacks and does not route between VLANs.
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Why D is wrong
It inspects web application traffic and does not do inter-VLAN routing.
Question 17 Play from 22:37
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Right, A is the answer.
Why A is right
A port replicator plugs into the laptop through one connection and offers several more ports in return, which directly solves the shortage.
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Why B is wrong
A receiver is a small dongle for a wireless mouse or keyboard and does not add general ports.
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Why C is wrong
Near-field communication is a short tap-to-share link and does not add physical ports.
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Why D is wrong
Bluetooth can pair some accessories, but it does not give the laptop more physical USB ports.
Question 18 Play from 23:58
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Right, A is the answer.
Why A is right
A PoE switch pushes electricity through the same Ethernet cable that carries the phone's data, so the phone needs no power adapter.
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Why B is wrong
A fiber router moves traffic but does not feed power to connected devices.
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Why C is wrong
Digital subscriber line is a way to get internet service and has no role in powering phones.
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Why D is wrong
A patch panel is only a passive point where cables are terminated.
Question 19 Play from 25:09
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Why A is wrong
A storage area network is shared storage and has nothing to do with enabling encryption.
Right, B is the answer.
Why B is right
BitLocker normally stores its keys in a Trusted Platform Module, a chip on the board that guards cryptographic secrets. Policy can allow other key storage, but the TPM is the standard expectation for BitLocker.
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Why C is wrong
A hardware security module is a separate appliance for large key management jobs and is not the usual part for BitLocker.
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Why D is wrong
ARM is a processor architecture rather than a security component.
Question 20 Play from 26:32
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Why A is wrong
A modem converts signals for an internet line and does not build a MAC table.
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Why B is wrong
A router works at Layer 3 and chooses paths by IP address.
Right, C is the answer.
Why C is right
A switch works at Layer 2 and keeps a table of MAC addresses, so frames go out only through the port where the destination lives.
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Why D is wrong
A firewall applies security rules to traffic and is not the device that switches frames.
Question 21 Play from 27:46
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Why A is wrong
Filtering web content is done by firewalls or proxies rather than by a typical managed switch.
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Why B is wrong
Switches do not contain cellular modems; mobile data comes from separate gateway equipment.
Right, C is the answer.
Why C is right
Managed switches let an administrator place particular ports into separate VLANs, which divides the network and controls traffic. Unmanaged switches have no such configuration.
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Why D is wrong
Spreading requests across servers is the job of dedicated load balancers.
Question 22 Play from 29:15
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Why A is wrong
Satellite brings long delays and slower upload speeds.
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Why B is wrong
Cellular service has limited capacity and cannot sustain very heavy transfers.
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Why C is wrong
DSL uploads much more slowly than it downloads and tops out at low speeds.
Right, D is the answer.
Why D is right
Fiber links reach the highest speeds and normally give equal upload and download rates, so they handle huge transfers best. DSL and satellite are weaker on uploads, and cellular lacks the capacity.
Question 23 Play from 30:34
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Right, A is the answer.
Why A is right
Ultra HD, often called 4K, is 3840 by 2160 pixels, four times as many pixels as a 1080p screen.
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Why B is wrong
That width is a digital cinema format, not the consumer Ultra HD standard.
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Why C is wrong
That is 8K, a step above Ultra HD.
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Why D is wrong
That is Full HD, one quarter of the pixel count of Ultra HD.
Question 24 Play from 31:59
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Why A is wrong
Port 53 is DNS, which the network needs for name lookups.
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Why B is wrong
Port 25 is SMTP for mail transfer, not a remote login service.
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Why C is wrong
Port 22 is SSH, the encrypted way to manage devices remotely, so it should stay open.
Right, D is the answer.
Why D is right
Port 23 carries Telnet, which sends everything including passwords in readable text, so it should be shut off. Secure Shell on port 22 is the encrypted replacement.
Question 25 Play from 33:18
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Why A is wrong
A tap copies traffic for monitoring and does not attach wires.
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Why B is wrong
A tone generator and probe trace where a cable runs and cannot terminate it.
Right, C is the answer.
Why C is right
A punchdown tool presses each wire into the insulation displacement slots on the back of a patch panel and trims the excess, completing the connection.
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Why D is wrong
A crimper fixes RJ45 plugs onto cable ends rather than panel jacks.
Question 26 Play from 34:38
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Why A is wrong
No ATX rail is 24 volts; the number refers to the pin count of the motherboard plug.
Right, B is one of the answers.
Why B is right
ATX power supplies provide rails of 3.3 volts, 5 volts, and 12 volts. The 24 in the 24-pin connector only counts the pins and is not a voltage.
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Why C is wrong
Nine volts is not a rail on a standard ATX supply.
Right, D is one of the answers.
Why D is right
ATX power supplies provide rails of 3.3 volts, 5 volts, and 12 volts. The 24 in the 24-pin connector only counts the pins and is not a voltage.
Question 27 Play from 35:53
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Why A is wrong
A sleep timer saves electricity, not paper or toner.
Right, B is the answer.
Why B is right
Printing on both sides of each sheet greatly reduces paper use, which is the main supply a shared copier goes through. The other settings affect power, access, or paper sourcing, not the number of sheets consumed.
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Why C is wrong
Authentication controls who may print and does not reduce how many sheets are used.
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Why D is wrong
Tray settings choose which paper source is used and leave the amount consumed the same.
Question 28 Play from 37:16
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Why A is wrong
An inverter powers the backlight of older LCD panels and does not sense touch.
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Why B is wrong
The LCD creates the picture but does not detect touch.
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Why C is wrong
OLED is a self-lit display technology and does not sense touch.
Right, D is the answer.
Why D is right
The digitizer is the thin layer that senses a finger or stylus and converts the contact into screen coordinates.
Question 29 Play from 38:31
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Why A is wrong
Connectors matter, but adapters can often cover a shortage, while too little power cannot be fixed that way.
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Why B is wrong
Wall input voltage is the same for a given region and does not change with the added parts.
Right, C is the answer.
Why C is right
More cards and drives raise the total power the system can pull, so the supply must be rated for enough watts to cover peak load with some spare capacity. If it falls short, the machine becomes unstable.
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Why D is wrong
Output rails are standard across modern supplies, so they do not help choose one.
Question 30 Play from 39:54
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Right, A is the answer.
Why A is right
A raised area under the touchpad is a typical sign of a swelling lithium battery pressing upward. It is also a fire risk, so the battery comes out first and the pointer problem should clear.
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Why B is wrong
A bulge points to a swollen battery, not a faulty system board.
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Why C is wrong
The pad is only being pushed up by the swollen cell beneath it, so it is not the failed part.
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Why D is wrong
A heat sink does not swell and would not push up against the touchpad.
Question 31 Play from 41:12
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Why A is wrong
SMS is for text messages to phones, not email.
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Why B is wrong
SFTP moves files securely but does not send email.
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Why C is wrong
SMB shares files on a local network and cannot deliver mail.
Right, D is the answer.
Why D is right
Sending email requires SMTP, so the printer needs the mail server address, port, and login details entered. With that in place it can mail scans to recipients.
Question 32 Play from 42:30
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Why A is wrong
A rewritable DVD stores data on optical discs and holds far less than a modern drive.
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Why B is wrong
Magnetic tape is used for archive backups and is slow to access.
Right, C is the answer.
Why C is right
A solid state drive keeps data on flash memory, has no moving parts, and delivers fast access to big volumes of data. The other devices use spinning disks, optical discs, or magnetic tape.
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Why D is wrong
A hard disk uses spinning magnetic platters, not flash chips.
Question 33 Play from 43:47
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Why A is wrong
RAID 6 relies on two sets of parity, which is even more calculation.
Right, B is the answer.
Why B is right
RAID 10 mirrors pairs of disks and stripes across the pairs, so it survives a drive loss and reads and writes quickly with no parity math. Levels 5 and 6 depend on parity, and level 0 has no protection at all.
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Why C is wrong
RAID 0 stripes for speed but has no redundancy, so one failure loses everything.
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Why D is wrong
RAID 5 protects data with parity, which needs extra calculation.
Question 34 Play from 45:08
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Why A is wrong
A crimper attaches connectors to cable ends and cannot exercise a port.
Right, B is the answer.
Why B is right
A loopback plug feeds a port's transmit signal back into its own receive pins, proving the port works without a second device.
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Why C is wrong
A patch panel only organizes cable connections and does not test them.
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Why D is wrong
A tap watches traffic passively and does not check whether a port works.
Question 35 Play from 46:24
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Why A is wrong
Printing on both sides changes how the page is laid out, not who collects it.
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Why B is wrong
Sharing lets more people use a printer and does nothing to stop forgotten pages.
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Why C is wrong
Encryption protects data in transit and does not affect printed pages left behind.
Right, D is the answer.
Why D is right
With badge release, the job stays held until the owner taps a badge at the printer, so pages never sit in the tray for others to see.
Question 36 Play from 47:47
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Why A is wrong
VGA is a video connector.
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Why B is wrong
SATA is an older interface for slower drives and does not carry NVMe.
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Why C is wrong
RJ45 is a network connector.
Right, D is the answer.
Why D is right
Modern NVMe SSDs plug into an M.2 slot and talk to the system across PCIe lanes.
Question 37 Play from 48:53
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Why A is wrong
Drives of that size are mechanical or external units, not the compact form NVMe normally takes.
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Why B is wrong
Molex plugs are an old power connector, and NVMe cards draw power through the slot.
Right, C is the answer.
Why C is right
NVMe drives usually come as small M.2 cards that plug straight into a motherboard slot and use the PCIe bus for high speed.
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Why D is wrong
Spindle speed applies to spinning hard drives, and NVMe is flash storage.
Question 38 Play from 50:15
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Why A is wrong
Tethering normally links one device to the phone's connection and is not described as a portable network of its own.
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Why B is wrong
NFC works only at touching distance and cannot host a network.
Right, C is the answer.
Why C is right
A hotspot makes a small, portable wireless network, often from a phone or pocket router, so several devices can use one internet connection at the same time.
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Why D is wrong
Bluetooth suits short links to accessories and is not the usual way to share internet with many devices.
Question 39 Play from 51:31
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Why A is wrong
Built-in graphics is a bonus feature to weigh only after compatibility is confirmed.
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Why B is wrong
Core count affects performance but is irrelevant if the chip will not fit the board.
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Why C is wrong
Bus speed is a performance detail checked after confirming the chip fits.
Right, D is the answer.
Why D is right
The CPU must physically and electrically match the motherboard socket, so that is the first check. If the socket is wrong, nothing else about the processor matters.
Question 40 Play from 52:45
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Why A is wrong
A reset is a software step and cannot cure a damaged battery.
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Why B is wrong
Phone memory cannot normally be upgraded and has nothing to do with swelling.
Right, C is the answer.
Why C is right
A phone that puffs up is showing the classic sign of a swelling lithium battery, caused by gas building inside the cell. It is a fire risk, so the battery has to be replaced.
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Why D is wrong
A larger case only hides the problem and leaves the hazardous battery in place.
Question 41 Play from 54:04
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Why A is wrong
Lightning is an Apple device connector with no role in cable internet.
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Why B is wrong
LC is a small fiber optic connector, not used for coax.
Right, C is the answer.
Why C is right
Cable internet runs over coaxial cable, and F-type connectors are the screw-on kind used for coax between the wall outlet and the modem. The other plugs belong to fiber, Ethernet, or Apple devices.
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Why D is wrong
RJ45 plugs belong on Ethernet cable, not the coaxial line from the wall.
Question 42 Play from 55:20
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Why A is wrong
A metropolitan area network covers a whole city or campus, far bigger than a room.
Right, B is the answer.
Why B is right
A local area network spans a single location like one room or building, so every console or PC there can reach the same server and share one internet connection.
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Why C is wrong
A storage area network links storage devices to servers and is not for gaming or browsing.
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Why D is wrong
A personal area network spans only a person's own nearby devices and is not meant to serve several users on one server.
Question 43 Play from 56:45
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Why A is wrong
microATX boards are about 9.6 inches square, too large for this case.
Right, B is the answer.
Why B is right
Mini-ITX is the 6.7 inch square board used in small home theater and compact builds. Larger boards such as ATX and microATX will not fit a case designed around it.
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Why C is wrong
Extended ATX is bigger than standard ATX and built for workstations.
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Why D is wrong
ATX boards measure about 12 by 9.6 inches, much too large.
Question 44 Play from 58:09
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Why A is wrong
Firewalls filter mostly by IP address and port, at higher layers.
Right, B is the answer.
Why B is right
Switches work at Layer 2 and read the destination MAC address of each frame to choose the outgoing port. Some can also be set to allow or block devices by MAC address.
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Why C is wrong
A PoE injector only adds power to an Ethernet cable and does not look at traffic.
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Why D is wrong
Routers work at Layer 3 and decide by IP address.
Question 45 Play from 59:21
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Why A is wrong
A failed OLED would leave the screen dark or damaged but would not by itself stop touches from registering.
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Why B is wrong
A broken fingerprint or face sensor would only block that method, and the passcode could still be typed.
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Why C is wrong
The charging port has nothing to do with entering a code.
Right, D is the answer.
Why D is right
If typed digits do not register, the touch layer is not detecting contact. A dead biometric reader still leaves passcode entry available, and the charging port and display panel do not handle touch input.
Question 46 Play from 1:00:43
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Right, A is the answer.
Why A is right
A Type 2 hypervisor is hosted: it installs like an ordinary application on the computer's current operating system, as VirtualBox or VMware Workstation does. A Type 1 hypervisor is the one that sits directly on the hardware.
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Why B is wrong
That describes a Type 1 hypervisor, not a hosted Type 2.
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Why C is wrong
A hypervisor only divides up the resources that already exist and cannot create more.
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Why D is wrong
Firewalls filter network traffic, which is a separate function from a hypervisor.
Question 47 Play from 1:02:23
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Why A is wrong
Speed depends on the cable category, not the plenum rating.
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Why B is wrong
Shielding is a separate trait; a plenum cable may or may not have it.
Right, C is the answer.
Why C is right
Plenum is a fire safety rating: the jacket resists flames and produces little smoke and toxic fumes, so it may be run through air-handling spaces. It says nothing about speed, shielding, or outdoor use.
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Why D is wrong
Plenum cable is meant for indoor spaces, not outdoor runs.
Question 48 Play from 1:03:49
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Why A is wrong
Toner is a powder used in laser printers.
Right, B is the answer.
Why B is right
Printers that harden liquid with UV light use resin, which gives fine detail. Filament printers instead melt plastic strands.
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Why C is wrong
Filament is melted and pushed through a nozzle, not cured by light.
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Why D is wrong
Ribbons are consumed by impact printers.
Question 49 Play from 1:05:00
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Why A is wrong
Thermal printers use heat on special paper and have no ink cartridges.
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Why B is wrong
Wrong paper can fade or smudge a print but does not cause stripes at one fixed position.
Right, C is the answer.
Why C is right
Pale vertical lines on thermal output usually mean dirt or debris is covering part of the heating element, so those dots never heat the paper. Cleaning the element restores a full line of dots.
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Why D is wrong
A maintenance kit covers general wear parts and does not address a dirty heating element.
Question 50 Play from 1:06:27
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Why A is wrong
Dedicated resources are reserved for one customer and are not shared.
Right, B is the answer.
Why B is right
A community cloud is built for several organizations with similar interests that share infrastructure and its cost, which matches two businesses pooling application resources.
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Why C is wrong
Rapid elasticity describes scaling resources up and down, not sharing between organizations.
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Why D is wrong
File sync keeps copies of files matched across devices and is not a cloud model.
Question 51 Play from 1:07:48
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Why A is wrong
A basic USB hub mainly adds data ports and does not handle a monitor or network connection well.
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Why B is wrong
Bluetooth is wireless only and cannot link a monitor or a wired network.
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Why C is wrong
Lightning is an Apple connector that does not cover all four kinds of device.
Right, D is the answer.
Why D is right
A port replicator turns one connection to the laptop into many, so the display, keyboard, mouse, and network cable all attach at once. That makes setup far faster than plugging in each item.
Question 52 Play from 1:09:08
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Why A is wrong
A repeater only boosts the signal and never reads packet contents.
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Why B is wrong
A hub repeats incoming bits out of every port without looking at addresses.
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Why C is wrong
An unmanaged switch forwards by MAC address within one network and does not link different networks.
Right, D is the answer.
Why D is right
A router reads the Layer 3 address in every packet and decides which network it belongs on, which is what lets separate networks talk to each other.
Question 53 Play from 1:10:24
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Why A is wrong
ESC/P is a command set for dot matrix and basic printers and cannot render precise graphics.
Right, B is the answer.
Why B is right
PostScript describes pages independently of the printer, so graphics and fonts appear the same on any compatible device, which suits design work.
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Why C is wrong
A text-only driver cannot reproduce graphics or custom fonts.
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Why D is wrong
PCL leans on each printer's own hardware, so results can differ from one machine to another.
Question 54 Play from 1:11:46
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Why A is wrong
A wide area network covers large distances such as between cities.
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Why B is wrong
A local area network serves a building or office and is bigger than a personal bubble.
Right, C is the answer.
Why C is right
Bluetooth links a person's own devices over a few meters, which is the definition of a personal area network.
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Why D is wrong
A storage area network ties storage to servers and has nothing to do with Bluetooth.
Question 55 Play from 1:12:59
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Why A is wrong
A managed switch provides network ports only and cannot connect a screen, keyboard, or mouse.
Right, B is the answer.
Why B is right
A docking station joins the laptop through one cable and supplies ports for the screen, keyboard, mouse, and more, so it needs the fewest cables.
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Why C is wrong
NFC works over a very short range and is not used to connect peripherals like these.
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Why D is wrong
Bluetooth might pair a keyboard or mouse but cannot drive a monitor, so cables would still be needed.
Question 56 Play from 1:14:20
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Right, A is the answer.
Why A is right
Mesh Wi-Fi is built from access points that talk to each other, spreading coverage and giving the network alternate paths. A modem, an ONT, and DSL only connect the site to the internet provider.
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Why B is wrong
A modem converts the provider's signal for the local network and does not form a mesh.
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Why C is wrong
An optical network terminal ends the fiber line and does not form a mesh.
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Why D is wrong
DSL is a kind of internet service, not a mesh device.
Question 57 Play from 1:15:41
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Why A is wrong
That is ordinary local computing, where the processing happens on each desk.
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Why B is wrong
That describes a sandbox used for testing, not desktop delivery.
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Why C is wrong
That is virtualization in general, not specifically delivering desktops to users.
Right, D is the answer.
Why D is right
VDI keeps users' desktops on a central server and sends the screen image to thin clients, so the heavy processing and storage stay in the data center.
Question 58 Play from 1:17:15
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Right, A is the answer.
Why A is right
A tone generator sends a signal down one end of a cable, and the probe picks up that tone at the other end, letting the installer pick out the right cable from a bundle.
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Why B is wrong
A loopback plug checks whether a port works and cannot trace a cable.
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Why C is wrong
A tap monitors traffic and does not help locate cables.
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Why D is wrong
A crimper attaches connectors and does not identify cables.
Question 59 Play from 1:18:28
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Why A is wrong
Containers are mainly for packaging and isolating applications, not for inspecting attachments for malware.
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Why B is wrong
A hypervisor creates virtual machines but does not on its own supply the isolated inspection setup.
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Why C is wrong
VDI provides remote desktops and is not designed for isolating suspicious files.
Right, D is the answer.
Why D is right
A sandbox is a walled-off environment where a file can be opened and watched safely, so any harmful behavior stays contained and away from the main system.
Question 60 Play from 1:19:51
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Why A is wrong
Scope options push settings such as gateway or DNS server, not an address for one device.
Right, B is the answer.
Why B is right
A DHCP reservation ties a specific address to one device's MAC address, so the device gets the same IP every time while still using DHCP.
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Why C is wrong
An exclusion takes addresses out of the pool, which is the opposite of what is wanted.
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Why D is wrong
A lease is the temporary period an address is loaned and does not make it permanent.
Question 61 Play from 1:21:11
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Why A is wrong
A public cloud runs entirely at a provider's facilities with nothing kept on premises.
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Why B is wrong
A private cloud serves a single organization and does not mix local systems with a provider's services.
Right, C is the answer.
Why C is right
A hybrid cloud mixes on-premises infrastructure with services from a hosting provider, so part of the workload stays local and part runs externally.
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Why D is wrong
A community cloud is shared by organizations with common interests, not a split between local and hosted systems.
Question 62 Play from 1:22:29
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Why A is wrong
Multitenancy means customers share the same infrastructure and does not address growing capacity.
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Why B is wrong
Location is about where data centers sit and has no bearing on scaling.
Right, C is the answer.
Why C is right
Elasticity lets capacity grow when demand spikes and shrink again afterward, which fits a store with uneven traffic.
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Why D is wrong
Availability concerns uptime, not adjusting capacity to demand.
Question 63 Play from 1:23:50
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Why A is wrong
The 60GHz band is a very short range band with a separate channel plan.
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Why B is wrong
The 6GHz band came with Wi-Fi 6E and uses a different channel layout.
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Why C is wrong
The 5GHz band has many more channels, numbered differently.
Right, D is the answer.
Why D is right
The 2.4GHz band has channels 1, 6, and 11 as its three channels that do not overlap, so they are the usual choice to limit interference.
Question 64 Play from 1:25:08
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Why A is wrong
A VLAN divides one switch into logical networks and does not protect traffic crossing between locations.
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Why B is wrong
DHCP hands out IP addresses and does not create secure channels.
Right, C is the answer.
Why C is right
A VPN builds an encrypted tunnel across an untrusted network such as the internet and checks credentials before letting a user in, linking sites or remote workers securely.
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Why D is wrong
A CNAME record is a DNS alias and plays no part in secure connections.
Question 65 Play from 1:26:31
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Why A is wrong
Authentication controls access to the printer but does not by itself give a history to investigate.
Right, B is the answer.
Why B is right
Audit logs record who sent which print job and when, so the administrator can trace the excess printing to a specific person.
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Why C is wrong
A counter reports only total pages and not who printed them.
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Why D is wrong
Secure printing holds jobs until the owner is present and does not reveal past misuse.
Question 66 Play from 1:27:46
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Why A is wrong
Port 25 is SMTP for sending email.
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Why B is wrong
Port 21 is FTP for file transfer, not for administering devices.
Right, C is the answer.
Why C is right
Port 22 belongs to SSH, which encrypts remote administration sessions and replaced the unprotected Telnet service.
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Why D is wrong
Port 23 is Telnet, which gives remote access but sends everything unencrypted.
Question 67 Play from 1:28:55
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Why A is wrong
Color adjustments cannot repair pixels that are permanently worn.
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Why B is wrong
More brightness does not remove the permanent image and can make it more visible.
Right, C is the answer.
Why C is right
Burn-in is lasting damage where pixels have worn unevenly from showing a fixed image for too long. Settings cannot reverse it, so the display has to be replaced.
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Why D is wrong
Keystone correction fixes a skewed projected image, not worn pixels.
Question 68 Play from 1:30:09
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Why A is wrong
An A record maps a name to an IPv4 address and does not carry mail policy.
Right, B is the answer.
Why B is right
DMARC policies are published in DNS as TXT records that tell receiving servers how to treat messages failing authentication and where to send reports.
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Why C is wrong
MX records name the servers that receive mail, not authentication policy.
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Why D is wrong
CNAME records create aliases and are not used for DMARC.
Question 69 Play from 1:31:26
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Right, A is the answer.
Why A is right
With platform as a service, the provider looks after the servers and operating system, and the customer only deploys and manages the application.
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Why B is wrong
With infrastructure as a service, the customer still manages the guest operating system.
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Why C is wrong
Software as a service delivers a finished application and does not host a company's own app.
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Why D is wrong
UCaaS provides communication tools such as voice and chat, not application hosting.
Question 70 Play from 1:32:43
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Right, A is one of the answers.
Why A is right
DHCP relies on UDP ports 67 and 68, and SNMP relies on UDP 161 and 162, since both favor light, quick exchanges. SSH and SMTP need reliable delivery, so they run over TCP.
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Why B is wrong
SSH sessions run over TCP port 22 to get reliable, ordered delivery.
Right, C is one of the answers.
Why C is right
DHCP relies on UDP ports 67 and 68, and SNMP relies on UDP 161 and 162, since both favor light, quick exchanges. SSH and SMTP need reliable delivery, so they run over TCP.
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Why D is wrong
SMTP delivers mail over TCP port 25.
Question 71 Play from 1:34:05
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Why A is wrong
A hybrid setup runs two environments together, which adds complexity and cost.
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Why B is wrong
Dedicated resources are reserved for one customer, so they cost much more.
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Why C is wrong
A private cloud needs heavy upfront investment and ongoing upkeep for a single organization.
Right, D is the answer.
Why D is right
Shared cloud spreads infrastructure and upkeep costs over many customers, so each one pays far less than it would for exclusive resources.
Question 72 Play from 1:35:15
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Why A is wrong
QLED adds quantum dots for color and brightness but still depends on a backlight.
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Why B is wrong
LED here means a backlight for LCD panels, which cannot produce true black.
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Why C is wrong
LCD panels need a backlight, so black is never fully dark.
Right, D is the answer.
Why D is right
In an OLED panel each pixel produces its own light and can switch fully off, giving true black and a very high contrast ratio. The other technologies depend on a backlight that leaks some light.
Question 73 Play from 1:36:41
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Why A is wrong
Cellular is the type of connection itself, not the feature that shares it.
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Why B is wrong
Bluetooth offers low speed and range and is not the usual way to share a data plan.
Right, C is the answer.
Why C is right
A hotspot turns the phone's cellular data link into a small wireless network that other nearby devices can join.
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Why D is wrong
NFC only works at touching distance and is meant for quick taps and payments.
Question 74 Play from 1:37:55
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Why A is wrong
A print server manages printers and queues, not event logs.
Right, B is the answer.
Why B is right
A syslog server receives and stores log messages from devices and hosts in one place, so administrators can review events and errors centrally.
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Why C is wrong
A DNS server resolves names to addresses.
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Why D is wrong
A mail server handles email delivery and storage.
Question 75 Play from 1:39:07
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Why A is wrong
IPv6 is a different address version and still needs DHCP or manual settings.
Right, B is the answer.
Why B is right
With no DHCP server handing out addresses, each computer has to be given its own fixed address by hand, which lets all of them communicate.
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Why C is wrong
Public addresses are for internet-facing hosts and are not used for an internal network.
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Why D is wrong
Dynamic addressing relies on a DHCP server, which this router lacks.
Question 76 Play from 1:40:30
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Why A is wrong
802.11a only uses the 5GHz band.
Right, B is the answer.
Why B is right
Wi-Fi 6E was the first to carry 802.11ax into the 6GHz band, which brings many extra channels with little congestion. Earlier generations stay in the 2.4GHz and 5GHz bands.
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Why C is wrong
802.11ac works only in 5GHz.
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Why D is wrong
802.11n is limited to 2.4GHz and 5GHz.
Question 77 Play from 1:41:57
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Why A is wrong
Software as a service delivers finished applications and does not give virtual machines for recovery.
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Why B is wrong
Security as a service provides protection functions, not machines to recover onto.
Right, C is the answer.
Why C is right
Infrastructure as a service hands out virtual machines, storage, and networking on demand, so a company can replicate servers and fail over without owning hardware. It also leaves control of the machines to the customer.
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Why D is wrong
Platform as a service supplies development tools and middleware, not machine-level control for VM-based recovery.
Question 78 Play from 1:43:34
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Why A is wrong
A hybrid cloud mixes on-premises and cloud systems and does not promise unshared hardware.
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Why B is wrong
Elasticity is about scaling up and down and says nothing about who shares the hardware.
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Why C is wrong
SaaS is a way of delivering software and gives no control over the physical servers.
Right, D is the answer.
Why D is right
Dedicated resources are physical hardware set aside for one customer alone, so no other company's workloads run on it.
Question 79 Play from 1:44:56
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Why A is wrong
An AAAA record points a name directly at an IPv6 address rather than at another name.
Right, B is the answer.
Why B is right
A CNAME record makes one name an alias of another name, so several host names can lead to the same destination through that link.
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Why C is wrong
An A record points a name directly at an IPv4 address instead of forming an alias.
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Why D is wrong
TXT records hold text such as email policy and do not create aliases.
Question 80 Play from 1:46:17
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Why A is wrong
Malware is not automatically confined to the local machine; protection depends on how the virtual desktops are isolated.
Right, B is the answer.
Why B is right
With VDI, desktop images are built once on the server and delivered to many users, so settings and updates are handled centrally instead of machine by machine.
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Why C is wrong
Users still authenticate to the domain, often more strictly, in VDI.
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Why D is wrong
Licensing can cost more because of the server infrastructure and extra software.
Question 81 Play from 1:47:49
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Why A is wrong
A container is lightweight and shares the host's operating system kernel, so it is less completely isolated.
Right, B is the answer.
Why B is right
A sandbox is a sealed-off environment, often a virtual machine, so whatever runs inside cannot change the host or other programs.
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Why C is wrong
VDI delivers virtual desktops to users and is not an isolated test environment.
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Why D is wrong
A hypervisor is the software that creates virtual machines rather than being an isolated machine itself.
Question 82 Play from 1:49:17
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Why A is wrong
MX records point to mail servers and do not support general name lookups for a server.
Right, B is one of the answers.
Why B is right
An A record ties a name directly to an IPv4 address, and a CNAME record points a name at another name that eventually resolves the same way. Both let people use friendly names instead of numbers.
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Why C is wrong
TXT records store free-form text and do not map names to addresses.
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Why D is wrong
SPF lists servers allowed to send mail for a domain and does not map names to addresses.
Right, E is one of the answers.
Why E is right
An A record ties a name directly to an IPv4 address, and a CNAME record points a name at another name that eventually resolves the same way. Both let people use friendly names instead of numbers.
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Why F is wrong
AAAA records map names to IPv6 addresses, but the question asks about IPv4.
Question 83 Play from 1:50:53
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Why A is wrong
Availability describes uptime and accessibility, not how local folders get refreshed.
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Why B is wrong
Metered utilization tracks and bills resource use and has nothing to do with matching files.
Right, C is the answer.
Why C is right
Synchronization keeps copies of files matched across devices, so a change made on one machine appears in the local folder on the others, as services like OneDrive and Dropbox do.
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Why D is wrong
A network share offers shared folder access but does not automatically copy updates to local folders.
Question 84 Play from 1:52:20
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Why A is wrong
Coax is older technology with lower ceilings than fiber.
Right, B is the answer.
Why B is right
Fiber delivers the highest speeds of the choices, with rates from hundreds of megabits up to tens of gigabits, so it moves large data sets to the cloud fastest.
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Why C is wrong
A SAN is a storage architecture, not a link to an outside provider.
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Why D is wrong
DSL is relatively slow and unsuited to moving very large amounts of data.
Question 85 Play from 1:53:36
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Why A is wrong
Secure Boot is a protection feature and is not needed to start an install from USB.
Right, B is the answer.
Why B is right
The firmware has to be told to try the USB drive before the internal disk, so the boot order must be set first. Only then can the installer start.
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Why C is wrong
PXE boot loads systems over the network, which is not what a USB install uses.
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Why D is wrong
A firmware password guards settings and can be added after the operating system is installed.
Question 86 Play from 1:54:56
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Why A is wrong
Bluetooth typically reaches 10 to 100 meters, far beyond NFC.
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Why B is wrong
3G cell coverage spans several kilometers.
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Why C is wrong
A 2.4GHz wireless link can cover 100 meters or more.
Right, D is the answer.
Why D is right
NFC works across only a few centimeters by design, which suits taps for payments and quick pairing. Bluetooth and 2.4GHz Wi-Fi reach tens of meters, and 3G service covers kilometers.
Question 87 Play from 1:56:13
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Why A is wrong
A stripper removes the outer jacket for termination and does not trace cables.
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Why B is wrong
A crimper attaches connectors to cable ends and does not track existing cables.
Right, C is the answer.
Why C is right
A tone generator and probe pair sends a signal down a cable and detects it at the far end, which reveals where that cable ends or which port it is patched into.
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Why D is wrong
A punchdown tool seats wires into panels or jacks and does not trace them.
Question 88 Play from 1:57:26
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Why A is wrong
SSDs are lighter and more compact than hard drives.
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Why B is wrong
SSDs respond faster because they have no moving parts.
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Why C is wrong
SSDs use less power since nothing has to spin.
Right, D is the answer.
Why D is right
Hard disk drives give far more gigabytes per dollar than SSDs, which is why they remain the budget choice for bulk storage. SSDs win on speed, power use, and size.
Question 89 Play from 1:58:44
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Why A is wrong
Refresh rate is set by the panel and its controller, not by the backlight.
Right, B is the answer.
Why B is right
Mini LEDs are so small that thousands fit behind the panel, giving many separate zones that can dim independently. That sharpens contrast and deepens blacks.
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Why C is wrong
Color range comes from the panel's filters and light spectrum, not backlight size.
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Why D is wrong
Latency is a panel and processing trait, which the backlight does not change.
Question 90 Play from 2:00:04
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Why A is wrong
Port 4443 is sometimes used as an alternate HTTPS port, not for remote desktop.
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Why B is wrong
Port 137 handles NetBIOS name resolution.
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Why C is wrong
Port 445 carries SMB file sharing.
Right, D is the answer.
Why D is right
Remote Desktop Protocol listens on port 3389. Port 137 supports NetBIOS names, 445 carries SMB file sharing, and 4443 is an alternate web port.
Question 91 Play from 2:01:26
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Why A is wrong
A multiboot machine can only run one operating system at a time.
Right, B is the answer.
Why B is right
A hypervisor can run many virtual machines side by side on one host, each with a different operating system, so developers all get the test systems they need without separate hardware.
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Why C is wrong
A sandbox isolates one test environment and is not meant to manage many operating systems at once.
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Why D is wrong
SaaS is delivered from the cloud rather than hosted locally.
Question 92 Play from 2:02:43
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Why A is wrong
Scalability is the ability to grow, but it does not imply automatic adjustment in both directions.
Right, B is the answer.
Why B is right
Elasticity means resources are added and removed automatically as demand rises and falls, which keeps cost in line with actual use.
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Why C is wrong
Multitenancy is about several customers sharing one environment.
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Why D is wrong
Availability concerns uptime rather than automatic resizing.
Question 93 Play from 2:03:59
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Why A is wrong
AAA covers authentication, authorization, and accounting, not clock syncing.
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Why B is wrong
UTM is a security appliance that bundles protective functions.
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Why C is wrong
DHCP hands out IP settings and does not set the time.
Right, D is the answer.
Why D is right
Network Time Protocol keeps device clocks aligned by syncing them to a trusted time source.
Question 94 Play from 2:05:10
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Why A is wrong
That adapter needs a DisplayPort output, which the laptop is not stated to have.
Right, B is the answer.
Why B is right
Thin modern laptops usually offer USB-C, which can output video and audio, so a USB-C to HDMI adapter reaches the projector. The other adapters need ports the laptop does not have.
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Why C is wrong
The laptop has no DVI port to plug that into.
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Why D is wrong
MicroUSB is rare on current laptops and does not reliably carry video.
Question 95 Play from 2:06:38
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Why A is wrong
USB-C is an external port and not a motherboard slot for cards or drives.
Right, B is one of the answers.
Why B is right
The graphics card needs a PCIe slot, usually x16, and the fastest drives use an NVMe slot, typically M.2. These two are the connections that matter for this build.
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Why C is wrong
FireWire is an outdated external interface.
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Why D is wrong
Molex is an old power connector rather than a data slot.
Right, E is one of the answers.
Why E is right
The graphics card needs a PCIe slot, usually x16, and the fastest drives use an NVMe slot, typically M.2. These two are the connections that matter for this build.
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Why F is wrong
SATA drives are slower than NVMe drives.
Question 96 Play from 2:08:08
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Why A is wrong
A private cloud belongs to one organization and is not shared among several companies.
Right, B is the answer.
Why B is right
A community cloud is shared among organizations with common goals, such as those in one industry, so they split the infrastructure while staying apart from the general public.
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Why C is wrong
A public cloud is open to everyone and is not tailored to one industry.
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Why D is wrong
A hybrid cloud blends public and private pieces and is not designed for industry-specific sharing.
Question 97 Play from 2:09:22
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Why A is wrong
Turning USB ports on or off does not judge whether a connected device is trusted.
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Why B is wrong
Single sign-on is a login convenience and has nothing to do with boot security.
Right, C is the answer.
Why C is right
Secure Boot is a UEFI feature that checks digital signatures on boot files and devices before the system starts, so untrusted media is refused.
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Why D is wrong
A BIOS password limits who can change firmware settings but does not block unsigned boot devices.
Question 98 Play from 2:10:48
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Why A is wrong
A cable tester checks wiring continuity and pinouts, not live traffic.
Right, B is the answer.
Why B is right
A network tap sits in line with the cable and passively duplicates everything that passes to a monitoring port, without needing an IP address or changing the traffic.
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Why C is wrong
A toner probe identifies cables rather than capturing traffic.
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Why D is wrong
A loopback plug checks a port by echoing its own signal back and cannot capture traffic.
Question 99 Play from 2:12:07
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Why A is wrong
An unmanaged switch has no configuration, so it cannot hold access control lists.
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Why B is wrong
DSL is an internet connection type, not a filtering device.
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Why C is wrong
A PoE injector only supplies power and does not filter traffic.
Right, D is the answer.
Why D is right
A firewall evaluates traffic against ACL rules to permit or deny it. A PoE injector only adds power, DSL is a connection technology, and an unmanaged switch cannot be configured.
Question 100 Play from 2:13:29
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Why A is wrong
GPS settings do not affect cellular data service.
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Why B is wrong
Hotspot is for sharing the phone's connection with other devices.
Right, C is the answer.
Why C is right
When the phone works elsewhere but not in one place, the first thing to confirm is that mobile data is turned on and configured for the available cellular networks. A bad SIM would break service everywhere, hotspot is for sharing, and GPS has no link to data.
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Why D is wrong
A faulty SIM would cause problems in every location, not just the parking lot.
Transcript
Play from 00:00 Question 1. After switching on a desktop at a dental clinic, the receptionist hears repeated ticking from inside the case, and Windows takes several minutes to load. Which of the following parts should the technician swap out? Here are the options. Option A. SSD. Option B. RAM. Option C. HDD. Option D. Fan. Pause the video now if you want time to think about the answer.
The correct answer is C. HDD. A ticking noise together with a very slow startup points to a mechanical hard drive whose read head is struggling over a damaged platter. The drive is failing physically, so it needs replacement. Now, why are the other options incorrect? Option A is incorrect. A solid state drive has no moving parts, so it cannot make a ticking noise. Option B is incorrect. Bad memory shows up as startup errors or crashes, not mechanical noises. Option D is incorrect. A failing fan whirs or grinds and would not slow down the loading of the operating system. Therefore, C, HDD, is the correct answer.
Play from 01:21 Question 2. A logistics firm needs a way to keep a running record of the equipment it owns. Which of the following technologies is the best choice? Here are the options. Option A. Wi-Fi. Option B. RFID. Option C. NFC. Option D. Bluetooth. Pause the video now if you want time to think about the answer.
The correct answer is B. RFID. RFID tags can be fixed to equipment and scanned from a distance without a clear line of sight, which suits automated counting of what a company owns. The other choices are built for different jobs. Now, why are the other options incorrect? Option A is incorrect. Wi-Fi gives devices network access and is not a tagging system for counting equipment. Option C is incorrect. NFC only works across a few centimeters, which makes bulk counting impractical. Option D is incorrect. Bluetooth pairs personal gadgets over a short link and is not meant for managing a stock list. Therefore, B, RFID, is the correct answer.
Play from 02:41 Question 3. Paper keeps getting stuck in the shared copier of a busy accounting office. Which of the following actions should the technician take to fix the problem? Here are the options. Option A. Put in a new ribbon. Option B. Swap the print head. Option C. Use a maintenance kit on the printer. Option D. Replace the toner or ink supply. Pause the video now if you want time to think about the answer.
The correct answer is C. Use a maintenance kit on the printer. Constant jams usually come from worn paper-handling parts like pickup rollers and separation pads. The maintenance kit bundles fresh versions of those parts, so it cures the underlying wear. Now, why are the other options incorrect? Option A is incorrect. Ribbons belong to impact printers and have nothing to do with the paper path of a modern office machine. Option B is incorrect. A bad print head damages print quality, but it does not stop sheets from feeding. Option D is incorrect. New consumables fix faded or streaky output, not paper getting caught in the feed. Therefore, C, Use a maintenance kit on the printer, is the correct answer.
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Play from 04:07 Question 4. A student comparing memory generations asks what sets a DDR4 module apart from a DDR3 module. Which of the following is a genuine difference? Here are the options. Option A. Modules that only have chips on one side. Option B. Operates at a reduced voltage. Option C. A wider physical DIMM. Option D. Greater power draw. Pause the video now if you want time to think about the answer.
The correct answer is B. Operates at a reduced voltage. DDR4 runs at about 1.2 volts, while DDR3 needs around 1.5 volts, so DDR4 uses less power and gives off less heat. That voltage drop is the dependable way to tell the two generations apart. Now, why are the other options incorrect? Option A is incorrect. Both generations come in single sided and double sided versions, so that does not separate them. Option C is incorrect. The DIMM form factor is about the same length, so width is not what changed. Option D is incorrect. DDR4 actually pulls less power than DDR3, the reverse of this statement. Therefore, B, Operates at a reduced voltage, is the correct answer.
Play from 05:40 Question 5. A builder wants a tidy PC with as few cables on show inside the case as possible. Which of the following parts should the builder choose? Here are the options. Option A. A liquid cooling loop. Option B. A wireless network adapter. Option C. SATA storage drives. Option D. A power supply with detachable cables. Pause the video now if you want time to think about the answer.
The correct answer is D. A power supply with detachable cables. A power supply with detachable cables lets the builder plug in only the leads the parts need, so nothing extra dangles inside the case. The other choices still add visible wiring or do not affect cabling. Now, why are the other options incorrect? Option A is incorrect. The tubes and radiator add clutter rather than removing it. Option B is incorrect. A wireless adapter concerns network access and says nothing about how many internal cables appear. Option C is incorrect. Each drive still needs its own power and data leads that stay in view. Therefore, D, A power supply with detachable cables, is the correct answer.
Play from 07:07 Question 6. A user wants to send a picture to an external screen through a USB port. Which of the following cable types can carry that video? Here are the options. Option A. USB-A. Option B. USB-C. Option C. MicroUSB. Option D. MiniUSB. Pause the video now if you want time to think about the answer.
The correct answer is B. USB-C. Only USB-C can carry video, thanks to modes such as DisplayPort Alternate Mode and Thunderbolt that run over the same connector. The older USB connectors move data and power only. Now, why are the other options incorrect? Option A is incorrect. Standard USB-A ports were built for data and power and have no video mode. Option C is incorrect. MicroUSB in its usual form does not output video. Option D is incorrect. MiniUSB is a dated connector with no video capability. Therefore, B, USB-C, is the correct answer.
Play from 08:24 Question 7. On a conference room display, staff see a small dark speck that never moves, no matter which laptop is plugged in or what is on screen. What would most likely explain this? Here are the options. Option A. A mismatched refresh rate. Option B. A damaged display cable. Option C. Burn-in. Option D. A dead pixel. Pause the video now if you want time to think about the answer.
The correct answer is D. A dead pixel. A pixel that has died stays dark in the same spot whatever is shown, because that tiny cell no longer lights up. Seeing it on every connected computer places the fault inside the panel, not the signal. Now, why are the other options incorrect? Option A is incorrect. A wrong refresh rate shows as flicker or no picture, not a permanent dark spot. Option B is incorrect. A damaged cable produces flicker, odd colors, or lost signal, not a single fixed speck. Option C is incorrect. Burn-in leaves a faded outline of a picture that was displayed for a long time, not one sharp dot. Therefore, D, A dead pixel, is the correct answer.
Play from 09:56 Question 8. A facilities team is mounting cameras around a parking structure and wants to run as little wiring as possible to each one. Which of the following technologies helps most? Here are the options. Option A. ONT. Option B. PoE. Option C. NIC. Option D. DSL. Pause the video now if you want time to think about the answer.
The correct answer is B. PoE. Power over Ethernet sends electricity and data down the same network cable, so each camera needs no separate power run. The other items do not cut down on cabling to a camera. Now, why are the other options incorrect? Option A is incorrect. An optical network terminal ends a fiber line at a building and does not power or wire cameras. Option C is incorrect. A network interface card is just an adapter and supplies no power. Option D is incorrect. DSL is a way of getting broadband over telephone lines and does nothing for camera wiring. Therefore, B, PoE, is the correct answer.
Play from 11:18 Question 9. An installer is running data cable through the ceiling void of an office building, where the same air circulates through the whole floor. Which of the following cable types should be used? Here are the options. Option A. Coaxial. Option B. Optical. Option C. Plenum-rated. Option D. Shielded twisted. Pause the video now if you want time to think about the answer.
The correct answer is C. Plenum-rated. Cable made for plenum spaces has a jacket that resists fire and gives off little smoke, which building codes require in the air-handling area above a suspended ceiling. Now, why are the other options incorrect? Option A is incorrect. Coax is an unusual choice for new network runs and does not meet the requirement just by being coaxial. Option B is incorrect. Fiber is chosen for speed and reach, not because it solves the fire safety rule for air spaces. Option D is incorrect. Shielding fights electrical interference and does not give the jacket a fire rating. Therefore, C, Plenum-rated, is the correct answer.
Play from 12:43 Question 10. A network administrator reads a value off a NIC label that identifies the company that built the card and is burned in at the factory. Which of the following is it? Here are the options. Option A. DSL. Option B. IP. Option C. MAC. Option D. APIPA. Pause the video now if you want time to think about the answer.
The correct answer is C. MAC. The MAC address is set into the network card at the factory, and its first half is an organizationally unique identifier that names the maker. IP addresses and APIPA ones are assigned by software, and DSL is a line technology. Now, why are the other options incorrect? Option A is incorrect. DSL is a type of internet connection, not an address. Option B is incorrect. An IP address is configured by an administrator or a DHCP server and says nothing about the card maker. Option D is incorrect. APIPA addresses are chosen by the operating system when DHCP is unavailable, so they are not burned in. Therefore, C, MAC, is the correct answer.
Play from 14:10 Question 11. A small office wants staff on Windows, macOS, and Linux machines to share documents from one networked host. Which of the following services would the host typically offer? (Choose two.) Here are the options. Option A. LDAP. Option B. FTP. Option C. NTP. Option D. RDP. Option E. SMB. Option F. IMAP. Pause the video now if you want time to think about the answer.
The correct answers are B. FTP, and E. SMB. SMB and FTP both let machines running different operating systems copy and share files from a host. SMB powers Windows sharing yet is also available on Linux and macOS, and FTP works across practically any platform. Now, why are the other options incorrect? Option A is incorrect. LDAP looks up directory entries such as user accounts and is not a file sharing service. Option C is incorrect. NTP keeps clocks in sync. Option D is incorrect. RDP opens a remote desktop session instead of sharing files. Option F is incorrect. IMAP retrieves email from a mail server. Therefore, B and E are the correct answers.
Play from 15:41 Question 12. A salesperson wants a laptop that can get on a mobile data network by itself, with no phone or other add-on device involved. Which of the following should the laptop use? Here are the options. Option A. NFC. Option B. SIM card. Option C. Bluetooth. Option D. Hotspot. Pause the video now if you want time to think about the answer.
The correct answer is B. SIM card. A SIM card, in a laptop with a built-in cellular modem, lets the machine join 4G or 5G networks directly, with no extra hardware. Now, why are the other options incorrect? Option A is incorrect. NFC works over only a few centimeters and is used for tapping, not for internet service. Option C is incorrect. Bluetooth links nearby accessories and cannot give a laptop its own mobile data service. Option D is incorrect. A hotspot relies on another device already sharing its connection, which the user wants to avoid. Therefore, B, SIM card, is the correct answer.
Play from 17:02 Question 13. A technician sets up a printer in a home office where only one PC will ever print to it. What should the technician do? Here are the options. Option A. Assign the printer a fixed IP address. Option B. Turn on secure printing. Option C. Attach it directly over USB. Option D. Add a PCL print language driver. Pause the video now if you want time to think about the answer.
The correct answer is C. Attach it directly over USB. With only one computer needing the printer, a direct USB link is the simplest answer, since it avoids any network setup or addressing. Now, why are the other options incorrect? Option A is incorrect. A fixed IP only matters when the printer sits on a network. Option B is incorrect. Secure release protects documents on shared printers and is not needed for a lone user. Option D is incorrect. The driver language does not decide how the printer connects to the PC. Therefore, C, Attach it directly over USB, is the correct answer.
Play from 18:23 Question 14. An engineer comparing internet service types asks which one is best known for long delays on every request. Which of the following is it? Here are the options. Option A. DSL. Option B. Satellite. Option C. Cable. Option D. Fiber. Pause the video now if you want time to think about the answer.
The correct answer is B. Satellite. A satellite link makes data travel thousands of miles up to orbit and back, so each round trip takes hundreds of milliseconds. The other services use ground-based lines with far shorter delays. Now, why are the other options incorrect? Option A is incorrect. DSL runs over telephone wiring on the ground, so delays stay modest compared with a satellite. Option C is incorrect. Cable internet travels over local coax lines and delivers low delay. Option D is incorrect. Fiber carries light over ground-based glass strands and has about the lowest delay available. Therefore, B, Satellite, is the correct answer.
Play from 19:39 Question 15. A systems administrator is turning a physical machine with no operating system installed into a host for a group of virtual servers. Which of the following should be installed? Here are the options. Option A. RDP. Option B. Container. Option C. VLAN. Option D. Hypervisor. Option E. VDI. Pause the video now if you want time to think about the answer.
The correct answer is D. Hypervisor. A hypervisor is the layer that abstracts the physical hardware so that many virtual machines can run on one box. Without it the hardware cannot be divided up into VMs. Now, why are the other options incorrect? Option A is incorrect. RDP is a protocol for reaching a remote desktop, not a way to host virtual servers. Option B is incorrect. Containers package apps on a shared operating system kernel and are not full virtual machines. Option C is incorrect. A VLAN splits a network into segments and does not create virtual machines. Option E is incorrect. VDI delivers desktops to users, a service built on top of virtualization, not the layer that makes it possible. Therefore, D, Hypervisor, is the correct answer.
Play from 21:10 Question 16. A training center wants several VLANs that can reach one another using as little equipment as possible and pass traffic at full line speed. Which of the following would work best? Here are the options. Option A. Layer 3 switch. Option B. Router. Option C. DDoS appliance. Option D. Web application firewall. Pause the video now if you want time to think about the answer.
The correct answer is A. Layer 3 switch. A Layer 3 switch routes between VLANs inside its own switching hardware, so one unit covers both jobs at wire speed. No separate router has to be bought or cabled in. Now, why are the other options incorrect? Option B is incorrect. A standalone router could connect the VLANs but adds another box and usually forwards more slowly than a switch. Option C is incorrect. It defends against flooding attacks and does not route between VLANs. Option D is incorrect. It inspects web application traffic and does not do inter-VLAN routing. Therefore, A, Layer 3 switch, is the correct answer.
Play from 22:37 Question 17. A remote worker's laptop has no free USB ports left, yet more devices still need to be connected. Which of the following is the best choice? Here are the options. Option A. Port replicator. Option B. USB receiver. Option C. Near-field communication. Option D. Bluetooth. Pause the video now if you want time to think about the answer.
The correct answer is A. Port replicator. A port replicator plugs into the laptop through one connection and offers several more ports in return, which directly solves the shortage. Now, why are the other options incorrect? Option B is incorrect. A receiver is a small dongle for a wireless mouse or keyboard and does not add general ports. Option C is incorrect. Near-field communication is a short tap-to-share link and does not add physical ports. Option D is incorrect. Bluetooth can pair some accessories, but it does not give the laptop more physical USB ports. Therefore, A, Port replicator, is the correct answer.
Play from 23:58 Question 18. An office installs desk phones that run over the network. Which of the following devices provides power to those phones? Here are the options. Option A. PoE switch. Option B. Fiber router. Option C. Digital subscriber line. Option D. Patch panel. Pause the video now if you want time to think about the answer.
The correct answer is A. PoE switch. A PoE switch pushes electricity through the same Ethernet cable that carries the phone's data, so the phone needs no power adapter. Now, why are the other options incorrect? Option B is incorrect. A fiber router moves traffic but does not feed power to connected devices. Option C is incorrect. Digital subscriber line is a way to get internet service and has no role in powering phones. Option D is incorrect. A patch panel is only a passive point where cables are terminated. Therefore, A, PoE switch, is the correct answer.
Play from 25:09 Question 19. A help desk technician is turning on drive encryption in Windows using BitLocker. Which of the following hardware items is expected for this? Here are the options. Option A. SAN. Option B. TPM. Option C. HSM. Option D. ARM. Pause the video now if you want time to think about the answer.
The correct answer is B. TPM. BitLocker normally stores its keys in a Trusted Platform Module, a chip on the board that guards cryptographic secrets. Policy can allow other key storage, but the TPM is the standard expectation for BitLocker. Now, why are the other options incorrect? Option A is incorrect. A storage area network is shared storage and has nothing to do with enabling encryption. Option C is incorrect. A hardware security module is a separate appliance for large key management jobs and is not the usual part for BitLocker. Option D is incorrect. ARM is a processor architecture rather than a security component. Therefore, B, TPM, is the correct answer.
Play from 26:32 Question 20. In a small office closet, a technician needs a box that learns which device sits on which port and sends frames only where they belong. Which of the following should be used? Here are the options. Option A. Modem. Option B. Router. Option C. Switch. Option D. Firewall. Pause the video now if you want time to think about the answer.
The correct answer is C. Switch. A switch works at Layer 2 and keeps a table of MAC addresses, so frames go out only through the port where the destination lives. Now, why are the other options incorrect? Option A is incorrect. A modem converts signals for an internet line and does not build a MAC table. Option B is incorrect. A router works at Layer 3 and chooses paths by IP address. Option D is incorrect. A firewall applies security rules to traffic and is not the device that switches frames. Therefore, C, Switch, is the correct answer.
Play from 27:46 Question 21. A network engineer is shopping for switches and wants to know what sets a managed model apart. Which of the following would be expected on a managed switch? Here are the options. Option A. Content filtering of web pages. Option B. Built-in cellular modem. Option C. Assigning individual ports to VLANs. Option D. Server-style load balancing. Pause the video now if you want time to think about the answer.
The correct answer is C. Assigning individual ports to VLANs. Managed switches let an administrator place particular ports into separate VLANs, which divides the network and controls traffic. Unmanaged switches have no such configuration. Now, why are the other options incorrect? Option A is incorrect. Filtering web content is done by firewalls or proxies rather than by a typical managed switch. Option B is incorrect. Switches do not contain cellular modems; mobile data comes from separate gateway equipment. Option D is incorrect. Spreading requests across servers is the job of dedicated load balancers. Therefore, C, Assigning individual ports to VLANs, is the correct answer.
Play from 29:15 Question 22. A design studio needs an internet link for moving enormous files, with upload as fast as download. Which of the following connection types suits it best? Here are the options. Option A. Satellite. Option B. Cellular. Option C. DSL. Option D. Fiber. Pause the video now if you want time to think about the answer.
The correct answer is D. Fiber. Fiber links reach the highest speeds and normally give equal upload and download rates, so they handle huge transfers best. DSL and satellite are weaker on uploads, and cellular lacks the capacity. Now, why are the other options incorrect? Option A is incorrect. Satellite brings long delays and slower upload speeds. Option B is incorrect. Cellular service has limited capacity and cannot sustain very heavy transfers. Option C is incorrect. DSL uploads much more slowly than it downloads and tops out at low speeds. Therefore, D, Fiber, is the correct answer.
Play from 30:34 Question 23. A buyer sees a monitor advertised as Ultra HD. Which of the following resolutions does that label normally refer to? Here are the options. Option A. 3840x2160. Option B. 2048x1080. Option C. 7680x4320. Option D. 1920x1080. Pause the video now if you want time to think about the answer.
The correct answer is A. 3840x2160. Ultra HD, often called 4K, is 3840 by 2160 pixels, four times as many pixels as a 1080p screen. Now, why are the other options incorrect? Option B is incorrect. That width is a digital cinema format, not the consumer Ultra HD standard. Option C is incorrect. That is 8K, a step above Ultra HD. Option D is incorrect. That is Full HD, one quarter of the pixel count of Ultra HD. Therefore, A, 3840x2160, is the correct answer.
Play from 31:59 Question 24. To harden remote access on a branch office server, a technician must close one of the ports below. Which of the following ports should be disabled? Here are the options. Option A. 53. Option B. 25. Option C. 22. Option D. 23. Pause the video now if you want time to think about the answer.
The correct answer is D. 23. Port 23 carries Telnet, which sends everything including passwords in readable text, so it should be shut off. Secure Shell on port 22 is the encrypted replacement. Now, why are the other options incorrect? Option A is incorrect. Port 53 is DNS, which the network needs for name lookups. Option B is incorrect. Port 25 is SMTP for mail transfer, not a remote login service. Option C is incorrect. Port 22 is SSH, the encrypted way to manage devices remotely, so it should stay open. Therefore, D, 23, is the correct answer.
Play from 33:18 Question 25. While wiring a new closet, an installer must seat each twisted pair of a Cat 6 run into a patch panel. Which of the following tools is used for that? Here are the options. Option A. Network tap. Option B. Toner probe. Option C. Punchdown tool. Option D. Crimper. Pause the video now if you want time to think about the answer.
The correct answer is C. Punchdown tool. A punchdown tool presses each wire into the insulation displacement slots on the back of a patch panel and trims the excess, completing the connection. Now, why are the other options incorrect? Option A is incorrect. A tap copies traffic for monitoring and does not attach wires. Option B is incorrect. A tone generator and probe trace where a cable runs and cannot terminate it. Option D is incorrect. A crimper fixes RJ45 plugs onto cable ends rather than panel jacks. Therefore, C, Punchdown tool, is the correct answer.
Play from 34:38 Question 26. A technician reading the label on an ATX power supply is asked which direct current voltages it normally delivers. Which of the following apply? (Choose two.) Here are the options. Option A. 24V. Option B. 3.3V. Option C. 9V. Option D. 12V. Pause the video now if you want time to think about the answer.
The correct answers are B. 3.3V, and D. 12V. ATX power supplies provide rails of 3.3 volts, 5 volts, and 12 volts. The 24 in the 24-pin connector only counts the pins and is not a voltage. Now, why are the other options incorrect? Option A is incorrect. No ATX rail is 24 volts; the number refers to the pin count of the motherboard plug. Option C is incorrect. Nine volts is not a rail on a standard ATX supply. Therefore, B and D are the correct answers.
Play from 35:53 Question 27. An office manager wants a shared multifunction printer to use up as few consumables as it can. Which setting should the technician adjust? Here are the options. Option A. Sleep timer. Option B. Two-sided printing. Option C. User authentication. Option D. Tray settings. Pause the video now if you want time to think about the answer.
The correct answer is B. Two-sided printing. Printing on both sides of each sheet greatly reduces paper use, which is the main supply a shared copier goes through. The other settings affect power, access, or paper sourcing, not the number of sheets consumed. Now, why are the other options incorrect? Option A is incorrect. A sleep timer saves electricity, not paper or toner. Option C is incorrect. Authentication controls who may print and does not reduce how many sheets are used. Option D is incorrect. Tray settings choose which paper source is used and leave the amount consumed the same. Therefore, B, Two-sided printing, is the correct answer.
Play from 37:16 Question 28. A tablet screen shows images fine, but a technician needs to know which layer picks up where a finger touches it. Which of the following does that? Here are the options. Option A. Inverter. Option B. LCD. Option C. OLED. Option D. Digitizer. Pause the video now if you want time to think about the answer.
The correct answer is D. Digitizer. The digitizer is the thin layer that senses a finger or stylus and converts the contact into screen coordinates. Now, why are the other options incorrect? Option A is incorrect. An inverter powers the backlight of older LCD panels and does not sense touch. Option B is incorrect. The LCD creates the picture but does not detect touch. Option C is incorrect. OLED is a self-lit display technology and does not sense touch. Therefore, D, Digitizer, is the correct answer.
Play from 38:31 Question 29. An engineer is adding extra graphics cards and drives to a workstation and needs a replacement power supply. Which of the following should be checked first? Here are the options. Option A. Number of connectors. Option B. Input voltage. Option C. Wattage rating. Option D. Output voltage. Pause the video now if you want time to think about the answer.
The correct answer is C. Wattage rating. More cards and drives raise the total power the system can pull, so the supply must be rated for enough watts to cover peak load with some spare capacity. If it falls short, the machine becomes unstable. Now, why are the other options incorrect? Option A is incorrect. Connectors matter, but adapters can often cover a shortage, while too little power cannot be fixed that way. Option B is incorrect. Wall input voltage is the same for a given region and does not change with the added parts. Option D is incorrect. Output rails are standard across modern supplies, so they do not help choose one. Therefore, C, Wattage rating, is the correct answer.
Play from 39:54 Question 30. An employee says the mouse pointer on a work laptop behaves erratically. Opening the case, the technician sees the area beneath the touchpad is raised. Which of the following parts should be replaced first? Here are the options. Option A. Battery. Option B. Motherboard. Option C. Trackpad. Option D. Heat sink. Pause the video now if you want time to think about the answer.
The correct answer is A. Battery. A raised area under the touchpad is a typical sign of a swelling lithium battery pressing upward. It is also a fire risk, so the battery comes out first and the pointer problem should clear. Now, why are the other options incorrect? Option B is incorrect. A bulge points to a swollen battery, not a faulty system board. Option C is incorrect. The pad is only being pushed up by the swollen cell beneath it, so it is not the failed part. Option D is incorrect. A heat sink does not swell and would not push up against the touchpad. Therefore, A, Battery, is the correct answer.
Play from 41:12 Question 31. A law office wants its copier to email scanned pages straight to staff. Which of the following should be set up on the device? Here are the options. Option A. SMS. Option B. SFTP. Option C. SMB. Option D. SMTP. Pause the video now if you want time to think about the answer.
The correct answer is D. SMTP. Sending email requires SMTP, so the printer needs the mail server address, port, and login details entered. With that in place it can mail scans to recipients. Now, why are the other options incorrect? Option A is incorrect. SMS is for text messages to phones, not email. Option B is incorrect. SFTP moves files securely but does not send email. Option C is incorrect. SMB shares files on a local network and cannot deliver mail. Therefore, D, SMTP, is the correct answer.
Play from 42:30 Question 32. A video editor wants a drive that stores huge amounts of footage and is built from flash chips. Which of the following devices fits? Here are the options. Option A. DVD-RW. Option B. Tape. Option C. SSD. Option D. HDD. Pause the video now if you want time to think about the answer.
The correct answer is C. SSD. A solid state drive keeps data on flash memory, has no moving parts, and delivers fast access to big volumes of data. The other devices use spinning disks, optical discs, or magnetic tape. Now, why are the other options incorrect? Option A is incorrect. A rewritable DVD stores data on optical discs and holds far less than a modern drive. Option B is incorrect. Magnetic tape is used for archive backups and is slow to access. Option D is incorrect. A hard disk uses spinning magnetic platters, not flash chips. Therefore, C, SSD, is the correct answer.
Play from 43:47 Question 33. A server administrator wants an array that survives a disk failure and also runs fast, without making the controller compute parity. Which of the following RAID levels should be used? Here are the options. Option A. 6. Option B. 10. Option C. 0. Option D. 5. Pause the video now if you want time to think about the answer.
The correct answer is B. 10. RAID 10 mirrors pairs of disks and stripes across the pairs, so it survives a drive loss and reads and writes quickly with no parity math. Levels 5 and 6 depend on parity, and level 0 has no protection at all. Now, why are the other options incorrect? Option A is incorrect. RAID 6 relies on two sets of parity, which is even more calculation. Option C is incorrect. RAID 0 stripes for speed but has no redundancy, so one failure loses everything. Option D is incorrect. RAID 5 protects data with parity, which needs extra calculation. Therefore, B, 10, is the correct answer.
Play from 45:08 Question 34. A technician suspects an Ethernet jack on a switch is dead and wants to prove the port can send and receive without connecting another computer. Which of the following should be used? Here are the options. Option A. Crimper. Option B. Loopback plug. Option C. Patch panel. Option D. Network tap. Pause the video now if you want time to think about the answer.
The correct answer is B. Loopback plug. A loopback plug feeds a port's transmit signal back into its own receive pins, proving the port works without a second device. Now, why are the other options incorrect? Option A is incorrect. A crimper attaches connectors to cable ends and cannot exercise a port. Option C is incorrect. A patch panel only organizes cable connections and does not test them. Option D is incorrect. A tap watches traffic passively and does not check whether a port works. Therefore, B, Loopback plug, is the correct answer.
Play from 46:24 Question 35. A manager sent a confidential termination notice to the office printer and walked away without picking it up. Which of the following would prevent this from happening again? Here are the options. Option A. Duplex printing. Option B. Printer sharing. Option C. Wireless encryption. Option D. Badge release at the printer. Pause the video now if you want time to think about the answer.
The correct answer is D. Badge release at the printer. With badge release, the job stays held until the owner taps a badge at the printer, so pages never sit in the tray for others to see. Now, why are the other options incorrect? Option A is incorrect. Printing on both sides changes how the page is laid out, not who collects it. Option B is incorrect. Sharing lets more people use a printer and does nothing to stop forgotten pages. Option C is incorrect. Encryption protects data in transit and does not affect printed pages left behind. Therefore, D, Badge release at the printer, is the correct answer.
Play from 47:47 Question 36. A builder is picking a slot for a current-generation internal NVMe drive on a new motherboard. Which of the following connectors should be used? Here are the options. Option A. VGA. Option B. SATA. Option C. RJ45. Option D. M.2. Pause the video now if you want time to think about the answer.
The correct answer is D. M.2. Modern NVMe SSDs plug into an M.2 slot and talk to the system across PCIe lanes. Now, why are the other options incorrect? Option A is incorrect. VGA is a video connector. Option B is incorrect. SATA is an older interface for slower drives and does not carry NVMe. Option C is incorrect. RJ45 is a network connector. Therefore, D, M.2, is the correct answer.
Play from 48:53 Question 37. A buyer reading a spec sheet wants to know what marks a drive as NVMe. Which of the following is typical of such a drive? Here are the options. Option A. A 3.5 inch external case. Option B. A Molex power plug. Option C. An M.2 slot connection. Option D. A 7,200 RPM spindle speed. Pause the video now if you want time to think about the answer.
The correct answer is C. An M.2 slot connection. NVMe drives usually come as small M.2 cards that plug straight into a motherboard slot and use the PCIe bus for high speed. Now, why are the other options incorrect? Option A is incorrect. Drives of that size are mechanical or external units, not the compact form NVMe normally takes. Option B is incorrect. Molex plugs are an old power connector, and NVMe cards draw power through the slot. Option D is incorrect. Spindle speed applies to spinning hard drives, and NVMe is flash storage. Therefore, C, An M.2 slot connection, is the correct answer.
Play from 50:15 Question 38. A traveler wants a compact private wireless network that lets a laptop, tablet, and phone all share one internet link. Which of the following describes this? Here are the options. Option A. Tethering. Option B. NFC. Option C. Hotspot. Option D. Bluetooth. Pause the video now if you want time to think about the answer.
The correct answer is C. Hotspot. A hotspot makes a small, portable wireless network, often from a phone or pocket router, so several devices can use one internet connection at the same time. Now, why are the other options incorrect? Option A is incorrect. Tethering normally links one device to the phone's connection and is not described as a portable network of its own. Option B is incorrect. NFC works only at touching distance and cannot host a network. Option D is incorrect. Bluetooth suits short links to accessories and is not the usual way to share internet with many devices. Therefore, C, Hotspot, is the correct answer.
Play from 51:31 Question 39. A customer asks which upgrade chip to buy for an older desktop PC. What should the technician verify before anything else? Here are the options. Option A. Integrated graphics. Option B. Number of cores. Option C. Bus frequency. Option D. Socket type. Pause the video now if you want time to think about the answer.
The correct answer is D. Socket type. The CPU must physically and electrically match the motherboard socket, so that is the first check. If the socket is wrong, nothing else about the processor matters. Now, why are the other options incorrect? Option A is incorrect. Built-in graphics is a bonus feature to weigh only after compatibility is confirmed. Option B is incorrect. Core count affects performance but is irrelevant if the chip will not fit the board. Option C is incorrect. Bus speed is a performance detail checked after confirming the chip fits. Therefore, D, Socket type, is the correct answer.
Play from 52:45 Question 40. An employee's work phone has a puffy back that no longer closes properly in its protective sleeve. What would a technician most likely do? Here are the options. Option A. Wipe the phone back to factory defaults. Option B. Add more memory to the phone. Option C. Swap out the battery. Option D. Buy a bigger case. Pause the video now if you want time to think about the answer.
The correct answer is C. Swap out the battery. A phone that puffs up is showing the classic sign of a swelling lithium battery, caused by gas building inside the cell. It is a fire risk, so the battery has to be replaced. Now, why are the other options incorrect? Option A is incorrect. A reset is a software step and cannot cure a damaged battery. Option B is incorrect. Phone memory cannot normally be upgraded and has nothing to do with swelling. Option D is incorrect. A larger case only hides the problem and leaves the hazardous battery in place. Therefore, C, Swap out the battery, is the correct answer.
Play from 54:04 Question 41. A technician is connecting a newly delivered cable internet modem to the coax outlet in the wall. Which connector goes on that cable? Here are the options. Option A. Lightning. Option B. LC. Option C. F-type. Option D. RJ45. Pause the video now if you want time to think about the answer.
The correct answer is C. F-type. Cable internet runs over coaxial cable, and F-type connectors are the screw-on kind used for coax between the wall outlet and the modem. The other plugs belong to fiber, Ethernet, or Apple devices. Now, why are the other options incorrect? Option A is incorrect. Lightning is an Apple device connector with no role in cable internet. Option B is incorrect. LC is a small fiber optic connector, not used for coax. Option D is incorrect. RJ45 plugs belong on Ethernet cable, not the coaxial line from the wall. Therefore, C, F-type, is the correct answer.
Play from 55:20 Question 42. Four friends meet in one living room to play on a game server that one of them hosts, and everyone needs to reach it and the internet. Which network type fits this setup? Here are the options. Option A. MAN. Option B. LAN. Option C. SAN. Option D. PAN. Pause the video now if you want time to think about the answer.
The correct answer is B. LAN. A local area network spans a single location like one room or building, so every console or PC there can reach the same server and share one internet connection. Now, why are the other options incorrect? Option A is incorrect. A metropolitan area network covers a whole city or campus, far bigger than a room. Option C is incorrect. A storage area network links storage devices to servers and is not for gaming or browsing. Option D is incorrect. A personal area network spans only a person's own nearby devices and is not meant to serve several users on one server. Therefore, B, LAN, is the correct answer.
Play from 56:45 Question 43. A buyer plans a small home theater PC with a square motherboard 6.7 inches on each side. Which form factor should be chosen? Here are the options. Option A. microATX. Option B. Mini-ITX. Option C. Extended ATX. Option D. ATX. Pause the video now if you want time to think about the answer.
The correct answer is B. Mini-ITX. Mini-ITX is the 6.7 inch square board used in small home theater and compact builds. Larger boards such as ATX and microATX will not fit a case designed around it. Now, why are the other options incorrect? Option A is incorrect. microATX boards are about 9.6 inches square, too large for this case. Option C is incorrect. Extended ATX is bigger than standard ATX and built for workstations. Option D is incorrect. ATX boards measure about 12 by 9.6 inches, much too large. Therefore, B, Mini-ITX, is the correct answer.
Play from 58:09 Question 44. Which of the following devices decides where to send Ethernet frames using the destination MAC address? Here are the options. Option A. Firewall. Option B. Switch. Option C. PoE injector. Option D. Router. Pause the video now if you want time to think about the answer.
The correct answer is B. Switch. Switches work at Layer 2 and read the destination MAC address of each frame to choose the outgoing port. Some can also be set to allow or block devices by MAC address. Now, why are the other options incorrect? Option A is incorrect. Firewalls filter mostly by IP address and port, at higher layers. Option C is incorrect. A PoE injector only adds power to an Ethernet cable and does not look at traffic. Option D is incorrect. Routers work at Layer 3 and decide by IP address. Therefore, B, Switch, is the correct answer.
Play from 59:21 Question 45. A customer cannot unlock their phone because the keypad does not respond when they try to type the passcode. Which of the following parts has most likely failed? Here are the options. Option A. OLED. Option B. Biometric scanner. Option C. Charging port. Option D. Touch screen. Pause the video now if you want time to think about the answer.
The correct answer is D. Touch screen. If typed digits do not register, the touch layer is not detecting contact. A dead biometric reader still leaves passcode entry available, and the charging port and display panel do not handle touch input. Now, why are the other options incorrect? Option A is incorrect. A failed OLED would leave the screen dark or damaged but would not by itself stop touches from registering. Option B is incorrect. A broken fingerprint or face sensor would only block that method, and the passcode could still be typed. Option C is incorrect. The charging port has nothing to do with entering a code. Therefore, D, Touch screen, is the correct answer.
Play from 1:00:43 Question 46. A student asks how a Type 2 hypervisor works. Which of the following statements is accurate? Here are the options. Option A. It is installed as software on top of an existing operating system. Option B. It talks straight to the hardware with no operating system in between. Option C. It gives guests more processor power than the host has. Option D. It acts as a network firewall for virtual machines. Pause the video now if you want time to think about the answer.
The correct answer is A. It is installed as software on top of an existing operating system. A Type 2 hypervisor is hosted: it installs like an ordinary application on the computer's current operating system, as VirtualBox or VMware Workstation does. A Type 1 hypervisor is the one that sits directly on the hardware. Now, why are the other options incorrect? Option B is incorrect. That describes a Type 1 hypervisor, not a hosted Type 2. Option C is incorrect. A hypervisor only divides up the resources that already exist and cannot create more. Option D is incorrect. Firewalls filter network traffic, which is a separate function from a hypervisor. Therefore, A, It is installed as software on top of an existing operating system, is the correct answer.
Play from 1:02:23 Question 47. A cabling vendor labels its product as plenum-rated. Which of the following describes what that rating means? Here are the options. Option A. It can carry data no faster than 1 Gbps. Option B. It blocks interference from nearby electrical equipment. Option C. It resists burning and gives off little smoke. Option D. It is limited to outdoor runs between buildings. Pause the video now if you want time to think about the answer.
The correct answer is C. It resists burning and gives off little smoke. Plenum is a fire safety rating: the jacket resists flames and produces little smoke and toxic fumes, so it may be run through air-handling spaces. It says nothing about speed, shielding, or outdoor use. Now, why are the other options incorrect? Option A is incorrect. Speed depends on the cable category, not the plenum rating. Option B is incorrect. Shielding is a separate trait; a plenum cable may or may not have it. Option D is incorrect. Plenum cable is meant for indoor spaces, not outdoor runs. Therefore, C, It resists burning and gives off little smoke, is the correct answer.
Play from 1:03:49 Question 48. A designer wants a 3D printer that produces very smooth, detailed parts by hardening liquid photopolymer with ultraviolet light. Which of the following supplies does that printer consume? Here are the options. Option A. Toner. Option B. Resin. Option C. Filament. Option D. Ribbon. Pause the video now if you want time to think about the answer.
The correct answer is B. Resin. Printers that harden liquid with UV light use resin, which gives fine detail. Filament printers instead melt plastic strands. Now, why are the other options incorrect? Option A is incorrect. Toner is a powder used in laser printers. Option C is incorrect. Filament is melted and pushed through a nozzle, not cured by light. Option D is incorrect. Ribbons are consumed by impact printers. Therefore, B, Resin, is the correct answer.
Play from 1:05:00 Question 49. A shop owner notices pale vertical stripes running down every receipt from a thermal printer. What would most likely correct this? Here are the options. Option A. Install fresh ink cartridges. Option B. Switch to a different paper grade. Option C. Wipe the print head heating element. Option D. Fit a maintenance kit. Pause the video now if you want time to think about the answer.
The correct answer is C. Wipe the print head heating element. Pale vertical lines on thermal output usually mean dirt or debris is covering part of the heating element, so those dots never heat the paper. Cleaning the element restores a full line of dots. Now, why are the other options incorrect? Option A is incorrect. Thermal printers use heat on special paper and have no ink cartridges. Option B is incorrect. Wrong paper can fade or smudge a print but does not cause stripes at one fixed position. Option D is incorrect. A maintenance kit covers general wear parts and does not address a dirty heating element. Therefore, C, Wipe the print head heating element, is the correct answer.
Play from 1:06:27 Question 50. Two partner companies in the same field want to pool the application resources they both rely on. Which of the following should they adopt? Here are the options. Option A. Dedicated resources. Option B. Community cloud. Option C. Rapid elasticity. Option D. File synchronization. Pause the video now if you want time to think about the answer.
The correct answer is B. Community cloud. A community cloud is built for several organizations with similar interests that share infrastructure and its cost, which matches two businesses pooling application resources. Now, why are the other options incorrect? Option A is incorrect. Dedicated resources are reserved for one customer and are not shared. Option C is incorrect. Rapid elasticity describes scaling resources up and down, not sharing between organizations. Option D is incorrect. File sync keeps copies of files matched across devices and is not a cloud model. Therefore, B, Community cloud, is the correct answer.
Play from 1:07:48 Question 51. An employee returns to the desk each morning and wants to hook a laptop to a screen, keyboard, mouse, and wired network as quickly as possible. Which of the following helps most? Here are the options. Option A. USB hub. Option B. Bluetooth. Option C. Lightning interface. Option D. Port replicator. Pause the video now if you want time to think about the answer.
The correct answer is D. Port replicator. A port replicator turns one connection to the laptop into many, so the display, keyboard, mouse, and network cable all attach at once. That makes setup far faster than plugging in each item. Now, why are the other options incorrect? Option A is incorrect. A basic USB hub mainly adds data ports and does not handle a monitor or network connection well. Option B is incorrect. Bluetooth is wireless only and cannot link a monitor or a wired network. Option C is incorrect. Lightning is an Apple connector that does not cover all four kinds of device. Therefore, D, Port replicator, is the correct answer.
Play from 1:09:08 Question 52. A company links its office network to its warehouse network. Which of the following devices should pass traffic between them by reading each packet's address information? Here are the options. Option A. Repeater. Option B. Hub. Option C. Unmanaged switch. Option D. Router. Pause the video now if you want time to think about the answer.
The correct answer is D. Router. A router reads the Layer 3 address in every packet and decides which network it belongs on, which is what lets separate networks talk to each other. Now, why are the other options incorrect? Option A is incorrect. A repeater only boosts the signal and never reads packet contents. Option B is incorrect. A hub repeats incoming bits out of every port without looking at addresses. Option C is incorrect. An unmanaged switch forwards by MAC address within one network and does not link different networks. Therefore, D, Router, is the correct answer.
Play from 1:10:24 Question 53. A design agency prints brochures with detailed vector art and custom fonts, and the pages need to look identical on every printer in the building. Which print driver should the technician install? Here are the options. Option A. ESC/P. Option B. PostScript. Option C. Generic text-only driver. Option D. PCL. Pause the video now if you want time to think about the answer.
The correct answer is B. PostScript. PostScript describes pages independently of the printer, so graphics and fonts appear the same on any compatible device, which suits design work. Now, why are the other options incorrect? Option A is incorrect. ESC/P is a command set for dot matrix and basic printers and cannot render precise graphics. Option C is incorrect. A text-only driver cannot reproduce graphics or custom fonts. Option D is incorrect. PCL leans on each printer's own hardware, so results can differ from one machine to another. Therefore, B, PostScript, is the correct answer.
Play from 1:11:46 Question 54. A trainer is describing a wireless headset paired to a phone over Bluetooth. What type of network is that connection an example of? Here are the options. Option A. WAN. Option B. LAN. Option C. PAN. Option D. SAN. Pause the video now if you want time to think about the answer.
The correct answer is C. PAN. Bluetooth links a person's own devices over a few meters, which is the definition of a personal area network. Now, why are the other options incorrect? Option A is incorrect. A wide area network covers large distances such as between cities. Option B is incorrect. A local area network serves a building or office and is bigger than a personal bubble. Option D is incorrect. A storage area network ties storage to servers and has nothing to do with Bluetooth. Therefore, C, PAN, is the correct answer.
Play from 1:12:59 Question 55. An employee wants to plug a laptop into a screen, keyboard, and mouse each time they sit at the office desk, using the fewest possible cables. Which of the following would achieve that best? Here are the options. Option A. Managed switch. Option B. Docking station. Option C. NFC. Option D. Bluetooth. Pause the video now if you want time to think about the answer.
The correct answer is B. Docking station. A docking station joins the laptop through one cable and supplies ports for the screen, keyboard, mouse, and more, so it needs the fewest cables. Now, why are the other options incorrect? Option A is incorrect. A managed switch provides network ports only and cannot connect a screen, keyboard, or mouse. Option C is incorrect. NFC works over a very short range and is not used to connect peripherals like these. Option D is incorrect. Bluetooth might pair a keyboard or mouse but cannot drive a monitor, so cables would still be needed. Therefore, B, Docking station, is the correct answer.
Play from 1:14:20 Question 56. An office manager wants wireless coverage in every corner of a building, with several units working together to extend the signal. Which of the following devices creates a mesh network? Here are the options. Option A. Access point. Option B. Modem. Option C. ONT. Option D. DSL. Pause the video now if you want time to think about the answer.
The correct answer is A. Access point. Mesh Wi-Fi is built from access points that talk to each other, spreading coverage and giving the network alternate paths. A modem, an ONT, and DSL only connect the site to the internet provider. Now, why are the other options incorrect? Option B is incorrect. A modem converts the provider's signal for the local network and does not form a mesh. Option C is incorrect. An optical network terminal ends the fiber line and does not form a mesh. Option D is incorrect. DSL is a kind of internet service, not a mesh device. Therefore, A, Access point, is the correct answer.
Play from 1:15:41 Question 57. A school wants to explain virtual desktop infrastructure to its staff. Which of the following scenarios is an example of it? Here are the options. Option A. Giving each user a powerful PC with its own installed operating system. Option B. Creating an isolated area to try out untrusted software. Option C. Running a virtual server on top of a hypervisor. Option D. Sending desktop screens from a central server to lightweight terminals. Pause the video now if you want time to think about the answer.
The correct answer is D. Sending desktop screens from a central server to lightweight terminals. VDI keeps users' desktops on a central server and sends the screen image to thin clients, so the heavy processing and storage stay in the data center. Now, why are the other options incorrect? Option A is incorrect. That is ordinary local computing, where the processing happens on each desk. Option B is incorrect. That describes a sandbox used for testing, not desktop delivery. Option C is incorrect. That is virtualization in general, not specifically delivering desktops to users. Therefore, D, Sending desktop screens from a central server to lightweight terminals, is the correct answer.
Play from 1:17:15 Question 58. In a crowded network closet, an installer must find which cable among dozens leads to a given wall jack. Which of the following tools would likely be used? Here are the options. Option A. Toner probe. Option B. Loopback plug. Option C. Network tap. Option D. Crimper. Pause the video now if you want time to think about the answer.
The correct answer is A. Toner probe. A tone generator sends a signal down one end of a cable, and the probe picks up that tone at the other end, letting the installer pick out the right cable from a bundle. Now, why are the other options incorrect? Option B is incorrect. A loopback plug checks whether a port works and cannot trace a cable. Option C is incorrect. A tap monitors traffic and does not help locate cables. Option D is incorrect. A crimper attaches connectors and does not identify cables. Therefore, A, Toner probe, is the correct answer.
Play from 1:18:28 Question 59. A support specialist wants a tool that opens incoming email attachments in a contained space to look for harmful behavior before the user sees them. Which of the following does that? Here are the options. Option A. Container. Option B. Hypervisor. Option C. VDI. Option D. Sandbox. Pause the video now if you want time to think about the answer.
The correct answer is D. Sandbox. A sandbox is a walled-off environment where a file can be opened and watched safely, so any harmful behavior stays contained and away from the main system. Now, why are the other options incorrect? Option A is incorrect. Containers are mainly for packaging and isolating applications, not for inspecting attachments for malware. Option B is incorrect. A hypervisor creates virtual machines but does not on its own supply the isolated inspection setup. Option C is incorrect. VDI provides remote desktops and is not designed for isolating suspicious files. Therefore, D, Sandbox, is the correct answer.
Play from 1:19:51 Question 60. A network admin wants one office PC to always get the same address from the DHCP server, while still letting the server hand it out. Which of the following should be created? Here are the options. Option A. Scope option. Option B. Reservation. Option C. Exclusion. Option D. Lease. Pause the video now if you want time to think about the answer.
The correct answer is B. Reservation. A DHCP reservation ties a specific address to one device's MAC address, so the device gets the same IP every time while still using DHCP. Now, why are the other options incorrect? Option A is incorrect. Scope options push settings such as gateway or DNS server, not an address for one device. Option C is incorrect. An exclusion takes addresses out of the pool, which is the opposite of what is wanted. Option D is incorrect. A lease is the temporary period an address is loaned and does not make it permanent. Therefore, B, Reservation, is the correct answer.
Play from 1:21:11 Question 61. A hospital wants some of its systems to stay in its own server room while others run at an outside cloud provider. Which cloud model describes this? Here are the options. Option A. Public. Option B. Private. Option C. Hybrid. Option D. Community. Pause the video now if you want time to think about the answer.
The correct answer is C. Hybrid. A hybrid cloud mixes on-premises infrastructure with services from a hosting provider, so part of the workload stays local and part runs externally. Now, why are the other options incorrect? Option A is incorrect. A public cloud runs entirely at a provider's facilities with nothing kept on premises. Option B is incorrect. A private cloud serves a single organization and does not mix local systems with a provider's services. Option D is incorrect. A community cloud is shared by organizations with common interests, not a split between local and hosted systems. Therefore, C, Hybrid, is the correct answer.
Play from 1:22:29 Question 62. An online store expects heavy traffic during a holiday sale and is moving its web shop to a cloud platform. It needs to add server capacity on busy days. Which cloud characteristic should it consider? Here are the options. Option A. Multitenancy. Option B. Location. Option C. Elasticity. Option D. Availability. Pause the video now if you want time to think about the answer.
The correct answer is C. Elasticity. Elasticity lets capacity grow when demand spikes and shrink again afterward, which fits a store with uneven traffic. Now, why are the other options incorrect? Option A is incorrect. Multitenancy means customers share the same infrastructure and does not address growing capacity. Option B is incorrect. Location is about where data centers sit and has no bearing on scaling. Option D is incorrect. Availability concerns uptime, not adjusting capacity to demand. Therefore, C, Elasticity, is the correct answer.
Play from 1:23:50 Question 63. A Wi-Fi installer is planning access point settings so neighboring cells do not overlap. In which frequency band are channels 1, 6, and 11 the standard non-overlapping set? Here are the options. Option A. 60GHz. Option B. 6GHz. Option C. 5GHz. Option D. 2.4GHz. Pause the video now if you want time to think about the answer.
The correct answer is D. 2.4GHz. The 2.4GHz band has channels 1, 6, and 11 as its three channels that do not overlap, so they are the usual choice to limit interference. Now, why are the other options incorrect? Option A is incorrect. The 60GHz band is a very short range band with a separate channel plan. Option B is incorrect. The 6GHz band came with Wi-Fi 6E and uses a different channel layout. Option C is incorrect. The 5GHz band has many more channels, numbered differently. Therefore, D, 2.4GHz, is the correct answer.
Play from 1:25:08 Question 64. A company with offices in two cities wants employees' computers to talk to each other over the internet through an encrypted tunnel after logging in with credentials. Which of the following supports that? Here are the options. Option A. VLAN. Option B. DHCP. Option C. VPN. Option D. CNAME. Pause the video now if you want time to think about the answer.
The correct answer is C. VPN. A VPN builds an encrypted tunnel across an untrusted network such as the internet and checks credentials before letting a user in, linking sites or remote workers securely. Now, why are the other options incorrect? Option A is incorrect. A VLAN divides one switch into logical networks and does not protect traffic crossing between locations. Option B is incorrect. DHCP hands out IP addresses and does not create secure channels. Option D is incorrect. A CNAME record is a DNS alias and plays no part in secure connections. Therefore, C, VPN, is the correct answer.
Play from 1:26:31 Question 65. A manager notices unusual printing volume and thinks a certain employee has been printing personal material. Which of the following would let the administrator confirm who did it? Here are the options. Option A. User authentication. Option B. Audit logs. Option C. Print counter. Option D. Secure printing. Pause the video now if you want time to think about the answer.
The correct answer is B. Audit logs. Audit logs record who sent which print job and when, so the administrator can trace the excess printing to a specific person. Now, why are the other options incorrect? Option A is incorrect. Authentication controls access to the printer but does not by itself give a history to investigate. Option C is incorrect. A counter reports only total pages and not who printed them. Option D is incorrect. Secure printing holds jobs until the owner is present and does not reveal past misuse. Therefore, B, Audit logs, is the correct answer.
Play from 1:27:46 Question 66. A network administrator needs to manage a router remotely over an encrypted connection. Which port should be used? Here are the options. Option A. 25. Option B. 21. Option C. 22. Option D. 23. Pause the video now if you want time to think about the answer.
The correct answer is C. 22. Port 22 belongs to SSH, which encrypts remote administration sessions and replaced the unprotected Telnet service. Now, why are the other options incorrect? Option A is incorrect. Port 25 is SMTP for sending email. Option B is incorrect. Port 21 is FTP for file transfer, not for administering devices. Option D is incorrect. Port 23 is Telnet, which gives remote access but sends everything unencrypted. Therefore, C, 22, is the correct answer.
Play from 1:28:55 Question 67. A conference room screen shows a ghost of a menu bar that stays visible over every presentation. What would be the best fix? Here are the options. Option A. Tweak the color profile. Option B. Turn the brightness up. Option C. Replace the monitor. Option D. Apply keystone correction. Pause the video now if you want time to think about the answer.
The correct answer is C. Replace the monitor. Burn-in is lasting damage where pixels have worn unevenly from showing a fixed image for too long. Settings cannot reverse it, so the display has to be replaced. Now, why are the other options incorrect? Option A is incorrect. Color adjustments cannot repair pixels that are permanently worn. Option B is incorrect. More brightness does not remove the permanent image and can make it more visible. Option D is incorrect. Keystone correction fixes a skewed projected image, not worn pixels. Therefore, C, Replace the monitor, is the correct answer.
Play from 1:30:09 Question 68. A mail administrator is publishing a DMARC policy so receivers can check that messages truly come from the company's servers. Which type of DNS record holds it? Here are the options. Option A. A. Option B. TXT. Option C. MX. Option D. CNAME. Pause the video now if you want time to think about the answer.
The correct answer is B. TXT. DMARC policies are published in DNS as TXT records that tell receiving servers how to treat messages failing authentication and where to send reports. Now, why are the other options incorrect? Option A is incorrect. An A record maps a name to an IPv4 address and does not carry mail policy. Option C is incorrect. MX records name the servers that receive mail, not authentication policy. Option D is incorrect. CNAME records create aliases and are not used for DMARC. Therefore, B, TXT, is the correct answer.
Play from 1:31:26 Question 69. A development team wants to run an in-house application in the cloud without patching or managing the server operating system. Which service model fits? Here are the options. Option A. PaaS. Option B. IaaS. Option C. SaaS. Option D. UCaaS. Pause the video now if you want time to think about the answer.
The correct answer is A. PaaS. With platform as a service, the provider looks after the servers and operating system, and the customer only deploys and manages the application. Now, why are the other options incorrect? Option B is incorrect. With infrastructure as a service, the customer still manages the guest operating system. Option C is incorrect. Software as a service delivers a finished application and does not host a company's own app. Option D is incorrect. UCaaS provides communication tools such as voice and chat, not application hosting. Therefore, A, PaaS, is the correct answer.
Play from 1:32:43 Question 70. A network engineer reviewing traffic needs to identify which services normally run over UDP rather than TCP. Which of the following do? (Choose two.) Here are the options. Option A. DHCP. Option B. SSH. Option C. SNMP. Option D. SMTP. Pause the video now if you want time to think about the answer.
The correct answers are A. DHCP, and C. SNMP. DHCP relies on UDP ports 67 and 68, and SNMP relies on UDP 161 and 162, since both favor light, quick exchanges. SSH and SMTP need reliable delivery, so they run over TCP. Now, why are the other options incorrect? Option B is incorrect. SSH sessions run over TCP port 22 to get reliable, ordered delivery. Option D is incorrect. SMTP delivers mail over TCP port 25. Therefore, A and C are the correct answers.
Play from 1:34:05 Question 71. A startup compares cloud ownership types, and its main goal is to keep spending as low as possible. Which type should it pick? Here are the options. Option A. Hybrid. Option B. Dedicated. Option C. Private. Option D. Shared. Pause the video now if you want time to think about the answer.
The correct answer is D. Shared. Shared cloud spreads infrastructure and upkeep costs over many customers, so each one pays far less than it would for exclusive resources. Now, why are the other options incorrect? Option A is incorrect. A hybrid setup runs two environments together, which adds complexity and cost. Option B is incorrect. Dedicated resources are reserved for one customer, so they cost much more. Option C is incorrect. A private cloud needs heavy upfront investment and ongoing upkeep for a single organization. Therefore, D, Shared, is the correct answer.
Play from 1:35:15 Question 72. A home theater enthusiast wants the deepest blacks and the highest contrast from a screen. Which display technology is known for that? Here are the options. Option A. QLED. Option B. LED. Option C. LCD. Option D. OLED. Pause the video now if you want time to think about the answer.
The correct answer is D. OLED. In an OLED panel each pixel produces its own light and can switch fully off, giving true black and a very high contrast ratio. The other technologies depend on a backlight that leaks some light. Now, why are the other options incorrect? Option A is incorrect. QLED adds quantum dots for color and brightness but still depends on a backlight. Option B is incorrect. LED here means a backlight for LCD panels, which cannot produce true black. Option C is incorrect. LCD panels need a backlight, so black is never fully dark. Therefore, D, OLED, is the correct answer.
Play from 1:36:41 Question 73. A traveler wants a smartphone to pass its 4G data connection on to a nearby laptop and tablet. Which of the following allows this? Here are the options. Option A. Cellular. Option B. Bluetooth. Option C. Hotspot. Option D. NFC. Pause the video now if you want time to think about the answer.
The correct answer is C. Hotspot. A hotspot turns the phone's cellular data link into a small wireless network that other nearby devices can join. Now, why are the other options incorrect? Option A is incorrect. Cellular is the type of connection itself, not the feature that shares it. Option B is incorrect. Bluetooth offers low speed and range and is not the usual way to share a data plan. Option D is incorrect. NFC only works at touching distance and is meant for quick taps and payments. Therefore, C, Hotspot, is the correct answer.
Play from 1:37:55 Question 74. A network team wants one central machine that gathers event messages sent by hosts and devices across the network. Which type of server does that? Here are the options. Option A. Print. Option B. Syslog. Option C. DNS. Option D. Mail. Pause the video now if you want time to think about the answer.
The correct answer is B. Syslog. A syslog server receives and stores log messages from devices and hosts in one place, so administrators can review events and errors centrally. Now, why are the other options incorrect? Option A is incorrect. A print server manages printers and queues, not event logs. Option C is incorrect. A DNS server resolves names to addresses. Option D is incorrect. A mail server handles email delivery and storage. Therefore, B, Syslog, is the correct answer.
Play from 1:39:07 Question 75. A small office buys a new SOHO router that has no DHCP feature. Which type of IP addressing must be used so every PC can still communicate? Here are the options. Option A. IPv6. Option B. Static. Option C. Public. Option D. Dynamic. Pause the video now if you want time to think about the answer.
The correct answer is B. Static. With no DHCP server handing out addresses, each computer has to be given its own fixed address by hand, which lets all of them communicate. Now, why are the other options incorrect? Option A is incorrect. IPv6 is a different address version and still needs DHCP or manual settings. Option C is incorrect. Public addresses are for internet-facing hosts and are not used for an internal network. Option D is incorrect. Dynamic addressing relies on a DHCP server, which this router lacks. Therefore, B, Static, is the correct answer.
Play from 1:40:30 Question 76. A network designer wants to use the newly opened 6GHz spectrum. Which Wi-Fi generation first supported that band? Here are the options. Option A. 802.11a. Option B. Wi-Fi 6E (802.11ax). Option C. Wi-Fi 5 (802.11ac). Option D. Wi-Fi 4 (802.11n). Pause the video now if you want time to think about the answer.
The correct answer is B. Wi-Fi 6E (802.11ax). Wi-Fi 6E was the first to carry 802.11ax into the 6GHz band, which brings many extra channels with little congestion. Earlier generations stay in the 2.4GHz and 5GHz bands. Now, why are the other options incorrect? Option A is incorrect. 802.11a only uses the 5GHz band. Option C is incorrect. 802.11ac works only in 5GHz. Option D is incorrect. 802.11n is limited to 2.4GHz and 5GHz. Therefore, B, Wi-Fi 6E (802.11ax), is the correct answer.
Play from 1:41:57 Question 77. A firm is designing a disaster recovery plan in which it spins up copies of its servers as virtual machines at a provider. Which service model is most suitable? Here are the options. Option A. Subscribing to finished software applications. Option B. Outsourcing security controls to a provider. Option C. Renting virtual infrastructure from a provider. Option D. Using a managed platform to build applications. Pause the video now if you want time to think about the answer.
The correct answer is C. Renting virtual infrastructure from a provider. Infrastructure as a service hands out virtual machines, storage, and networking on demand, so a company can replicate servers and fail over without owning hardware. It also leaves control of the machines to the customer. Now, why are the other options incorrect? Option A is incorrect. Software as a service delivers finished applications and does not give virtual machines for recovery. Option B is incorrect. Security as a service provides protection functions, not machines to recover onto. Option D is incorrect. Platform as a service supplies development tools and middleware, not machine-level control for VM-based recovery. Therefore, C, Renting virtual infrastructure from a provider, is the correct answer.
Play from 1:43:34 Question 78. A bank moving to cloud services insists that its data sit on physical servers that no other customer shares. Which of the following satisfies this? Here are the options. Option A. Hybrid cloud. Option B. Elasticity. Option C. SaaS. Option D. Dedicated resources. Pause the video now if you want time to think about the answer.
The correct answer is D. Dedicated resources. Dedicated resources are physical hardware set aside for one customer alone, so no other company's workloads run on it. Now, why are the other options incorrect? Option A is incorrect. A hybrid cloud mixes on-premises and cloud systems and does not promise unshared hardware. Option B is incorrect. Elasticity is about scaling up and down and says nothing about who shares the hardware. Option C is incorrect. SaaS is a way of delivering software and gives no control over the physical servers. Therefore, D, Dedicated resources, is the correct answer.
Play from 1:44:56 Question 79. A web admin wants a site's hostname to point at another hostname rather than an IP address, acting as an alias. Which DNS record type is used? Here are the options. Option A. AAAA. Option B. CNAME. Option C. A. Option D. TXT. Pause the video now if you want time to think about the answer.
The correct answer is B. CNAME. A CNAME record makes one name an alias of another name, so several host names can lead to the same destination through that link. Now, why are the other options incorrect? Option A is incorrect. An AAAA record points a name directly at an IPv6 address rather than at another name. Option C is incorrect. An A record points a name directly at an IPv4 address instead of forming an alias. Option D is incorrect. TXT records hold text such as email policy and do not create aliases. Therefore, B, CNAME, is the correct answer.
Play from 1:46:17 Question 80. A school district is considering virtual desktop infrastructure for its computer labs. Which of the following is a benefit of VDI? Here are the options. Option A. Malware stays trapped on the local machine automatically. Option B. Each workstation needs little individual setup. Option C. Domain sign-in becomes unnecessary. Option D. Software licensing always costs less. Pause the video now if you want time to think about the answer.
The correct answer is B. Each workstation needs little individual setup. With VDI, desktop images are built once on the server and delivered to many users, so settings and updates are handled centrally instead of machine by machine. Now, why are the other options incorrect? Option A is incorrect. Malware is not automatically confined to the local machine; protection depends on how the virtual desktops are isolated. Option C is incorrect. Users still authenticate to the domain, often more strictly, in VDI. Option D is incorrect. Licensing can cost more because of the server infrastructure and extra software. Therefore, B, Each workstation needs little individual setup, is the correct answer.
Play from 1:47:49 Question 81. A lab manager needs a fully isolated virtual machine where test software can run without touching the host or other applications. Which of the following describes it? Here are the options. Option A. Container. Option B. Sandbox. Option C. VDI. Option D. Hypervisor. Pause the video now if you want time to think about the answer.
The correct answer is B. Sandbox. A sandbox is a sealed-off environment, often a virtual machine, so whatever runs inside cannot change the host or other programs. Now, why are the other options incorrect? Option A is incorrect. A container is lightweight and shares the host's operating system kernel, so it is less completely isolated. Option C is incorrect. VDI delivers virtual desktops to users and is not an isolated test environment. Option D is incorrect. A hypervisor is the software that creates virtual machines rather than being an isolated machine itself. Therefore, B, Sandbox, is the correct answer.
Play from 1:49:17 Question 82. Which DNS records let visitors reach a web server by name, with the name pointing either at an IPv4 address or at another name? (Choose two.) Here are the options. Option A. MX. Option B. CNAME. Option C. TXT. Option D. SPF. Option E. A. Option F. AAAA. Pause the video now if you want time to think about the answer.
The correct answers are B. CNAME, and E. A. An A record ties a name directly to an IPv4 address, and a CNAME record points a name at another name that eventually resolves the same way. Both let people use friendly names instead of numbers. Now, why are the other options incorrect? Option A is incorrect. MX records point to mail servers and do not support general name lookups for a server. Option C is incorrect. TXT records store free-form text and do not map names to addresses. Option D is incorrect. SPF lists servers allowed to send mail for a domain and does not map names to addresses. Option F is incorrect. AAAA records map names to IPv6 addresses, but the question asks about IPv4. Therefore, B and E are the correct answers.
Play from 1:50:53 Question 83. A user edits a document on a laptop, and later finds the same change already present in the folder on a desktop at home. Which cloud characteristic makes that happen? Here are the options. Option A. Availability. Option B. Metered utilization. Option C. Synchronization. Option D. Network share. Pause the video now if you want time to think about the answer.
The correct answer is C. Synchronization. Synchronization keeps copies of files matched across devices, so a change made on one machine appears in the local folder on the others, as services like OneDrive and Dropbox do. Now, why are the other options incorrect? Option A is incorrect. Availability describes uptime and accessibility, not how local folders get refreshed. Option B is incorrect. Metered utilization tracks and bills resource use and has nothing to do with matching files. Option D is incorrect. A network share offers shared folder access but does not automatically copy updates to local folders. Therefore, C, Synchronization, is the correct answer.
Play from 1:52:20 Question 84. A company plans to upload a huge archive from its own server room to a cloud provider. Which connection type is likely to move it fastest? Here are the options. Option A. Coaxial. Option B. Fiber. Option C. SAN. Option D. DSL. Pause the video now if you want time to think about the answer.
The correct answer is B. Fiber. Fiber delivers the highest speeds of the choices, with rates from hundreds of megabits up to tens of gigabits, so it moves large data sets to the cloud fastest. Now, why are the other options incorrect? Option A is incorrect. Coax is older technology with lower ceilings than fiber. Option C is incorrect. A SAN is a storage architecture, not a link to an outside provider. Option D is incorrect. DSL is relatively slow and unsuited to moving very large amounts of data. Therefore, B, Fiber, is the correct answer.
Play from 1:53:36 Question 85. A hobbyist has just assembled a first desktop and plans to set up the operating system using a flash drive. Which setting should be changed next? Here are the options. Option A. Secure Boot. Option B. Boot order. Option C. PXE boot. Option D. BIOS password. Pause the video now if you want time to think about the answer.
The correct answer is B. Boot order. The firmware has to be told to try the USB drive before the internal disk, so the boot order must be set first. Only then can the installer start. Now, why are the other options incorrect? Option A is incorrect. Secure Boot is a protection feature and is not needed to start an install from USB. Option C is incorrect. PXE boot loads systems over the network, which is not what a USB install uses. Option D is incorrect. A firmware password guards settings and can be added after the operating system is installed. Therefore, B, Boot order, is the correct answer.
Play from 1:54:56 Question 86. A technician is comparing wireless options. Which of these has the shortest range? Here are the options. Option A. Bluetooth. Option B. 3G. Option C. 2.4GHz. Option D. NFC. Pause the video now if you want time to think about the answer.
The correct answer is D. NFC. NFC works across only a few centimeters by design, which suits taps for payments and quick pairing. Bluetooth and 2.4GHz Wi-Fi reach tens of meters, and 3G service covers kilometers. Now, why are the other options incorrect? Option A is incorrect. Bluetooth typically reaches 10 to 100 meters, far beyond NFC. Option B is incorrect. 3G cell coverage spans several kilometers. Option C is incorrect. A 2.4GHz wireless link can cover 100 meters or more. Therefore, D, NFC, is the correct answer.
Play from 1:56:13 Question 87. A new technician needs to figure out which patch panel port a particular Ethernet cable is plugged into. Which tool helps most? Here are the options. Option A. Cable stripper. Option B. Crimper. Option C. Toner probe. Option D. Punchdown tool. Pause the video now if you want time to think about the answer.
The correct answer is C. Toner probe. A tone generator and probe pair sends a signal down a cable and detects it at the far end, which reveals where that cable ends or which port it is patched into. Now, why are the other options incorrect? Option A is incorrect. A stripper removes the outer jacket for termination and does not trace cables. Option B is incorrect. A crimper attaches connectors to cable ends and does not track existing cables. Option D is incorrect. A punchdown tool seats wires into panels or jacks and does not trace them. Therefore, C, Toner probe, is the correct answer.
Play from 1:57:26 Question 88. A storage planner compares spinning drives with flash drives. Which of the following is a point in favor of the spinning drives? Here are the options. Option A. Lighter and smaller. Option B. Quicker data access. Option C. Lower power use. Option D. More capacity for the money. Pause the video now if you want time to think about the answer.
The correct answer is D. More capacity for the money. Hard disk drives give far more gigabytes per dollar than SSDs, which is why they remain the budget choice for bulk storage. SSDs win on speed, power use, and size. Now, why are the other options incorrect? Option A is incorrect. SSDs are lighter and more compact than hard drives. Option B is incorrect. SSDs respond faster because they have no moving parts. Option C is incorrect. SSDs use less power since nothing has to spin. Therefore, D, More capacity for the money, is the correct answer.
Play from 1:58:44 Question 89. A reviewer is explaining what a mini LED backlight offers compared with a regular LED backlight. What benefit does it bring? Here are the options. Option A. Faster refresh rate. Option B. More local dimming zones. Option C. Wider color range. Option D. Shorter input lag. Pause the video now if you want time to think about the answer.
The correct answer is B. More local dimming zones. Mini LEDs are so small that thousands fit behind the panel, giving many separate zones that can dim independently. That sharpens contrast and deepens blacks. Now, why are the other options incorrect? Option A is incorrect. Refresh rate is set by the panel and its controller, not by the backlight. Option C is incorrect. Color range comes from the panel's filters and light spectrum, not backlight size. Option D is incorrect. Latency is a panel and processing trait, which the backlight does not change. Therefore, B, More local dimming zones, is the correct answer.
Play from 2:00:04 Question 90. A help desk agent must open a firewall port so employees can use remote desktop. Which port is typically used for that? Here are the options. Option A. 4443. Option B. 137. Option C. 445. Option D. 3389. Pause the video now if you want time to think about the answer.
The correct answer is D. 3389. Remote Desktop Protocol listens on port 3389. Port 137 supports NetBIOS names, 445 carries SMB file sharing, and 4443 is an alternate web port. Now, why are the other options incorrect? Option A is incorrect. Port 4443 is sometimes used as an alternate HTTPS port, not for remote desktop. Option B is incorrect. Port 137 handles NetBIOS name resolution. Option C is incorrect. Port 445 carries SMB file sharing. Therefore, D, 3389, is the correct answer.
Play from 2:01:26 Question 91. An IT team is building an on-site lab where several developers need to run many different test operating systems at the same time. Which of the following fits best? Here are the options. Option A. Multiboot server computer. Option B. Hypervisor. Option C. Sandbox. Option D. SaaS platform. Pause the video now if you want time to think about the answer.
The correct answer is B. Hypervisor. A hypervisor can run many virtual machines side by side on one host, each with a different operating system, so developers all get the test systems they need without separate hardware. Now, why are the other options incorrect? Option A is incorrect. A multiboot machine can only run one operating system at a time. Option C is incorrect. A sandbox isolates one test environment and is not meant to manage many operating systems at once. Option D is incorrect. SaaS is delivered from the cloud rather than hosted locally. Therefore, B, Hypervisor, is the correct answer.
Play from 2:02:43 Question 92. A cloud architect needs a property that automatically adds and removes server instances as demand changes. What is it called? Here are the options. Option A. Scalability. Option B. Elasticity. Option C. Multitenancy. Option D. Availability. Pause the video now if you want time to think about the answer.
The correct answer is B. Elasticity. Elasticity means resources are added and removed automatically as demand rises and falls, which keeps cost in line with actual use. Now, why are the other options incorrect? Option A is incorrect. Scalability is the ability to grow, but it does not imply automatic adjustment in both directions. Option C is incorrect. Multitenancy is about several customers sharing one environment. Option D is incorrect. Availability concerns uptime rather than automatic resizing. Therefore, B, Elasticity, is the correct answer.
Play from 2:03:59 Question 93. A sysadmin wants every server and workstation to keep the same clock time automatically. Which of the following should be used? Here are the options. Option A. AAA. Option B. UTM. Option C. DHCP. Option D. NTP. Pause the video now if you want time to think about the answer.
The correct answer is D. NTP. Network Time Protocol keeps device clocks aligned by syncing them to a trusted time source. Now, why are the other options incorrect? Option A is incorrect. AAA covers authentication, authorization, and accounting, not clock syncing. Option B is incorrect. UTM is a security appliance that bundles protective functions. Option C is incorrect. DHCP hands out IP settings and does not set the time. Therefore, D, NTP, is the correct answer.
Play from 2:05:10 Question 94. An employee's new ultrabook has neither VGA nor HDMI ports, but must show slides with sound on a conference room projector. Which of the following adapters should be purchased? Here are the options. Option A. DisplayPort to VGA. Option B. USB-C to HDMI. Option C. DVI to HDMI. Option D. MicroUSB to VGA. Pause the video now if you want time to think about the answer.
The correct answer is B. USB-C to HDMI. Thin modern laptops usually offer USB-C, which can output video and audio, so a USB-C to HDMI adapter reaches the projector. The other adapters need ports the laptop does not have. Now, why are the other options incorrect? Option A is incorrect. That adapter needs a DisplayPort output, which the laptop is not stated to have. Option C is incorrect. The laptop has no DVI port to plug that into. Option D is incorrect. MicroUSB is rare on current laptops and does not reliably carry video. Therefore, B, USB-C to HDMI, is the correct answer.
Play from 2:06:38 Question 95. A new workstation build calls for a powerful graphics card and the quickest storage available. Which of the following connections should be confirmed on the motherboard? (Choose two.) Here are the options. Option A. USB-C. Option B. PCIe. Option C. FireWire. Option D. Molex. Option E. NVMe. Option F. SATA. Pause the video now if you want time to think about the answer.
The correct answers are B. PCIe, and E. NVMe. The graphics card needs a PCIe slot, usually x16, and the fastest drives use an NVMe slot, typically M.2. These two are the connections that matter for this build. Now, why are the other options incorrect? Option A is incorrect. USB-C is an external port and not a motherboard slot for cards or drives. Option C is incorrect. FireWire is an outdated external interface. Option D is incorrect. Molex is an old power connector rather than a data slot. Option F is incorrect. SATA drives are slower than NVMe drives. Therefore, B and E are the correct answers.
Play from 2:08:08 Question 96. Several firms in the same industry want to share one cloud environment that suits their common needs. Which cloud model would they most likely use? Here are the options. Option A. Private. Option B. Community. Option C. Public. Option D. Hybrid. Pause the video now if you want time to think about the answer.
The correct answer is B. Community. A community cloud is shared among organizations with common goals, such as those in one industry, so they split the infrastructure while staying apart from the general public. Now, why are the other options incorrect? Option A is incorrect. A private cloud belongs to one organization and is not shared among several companies. Option C is incorrect. A public cloud is open to everyone and is not tailored to one industry. Option D is incorrect. A hybrid cloud blends public and private pieces and is not designed for industry-specific sharing. Therefore, B, Community, is the correct answer.
Play from 2:09:22 Question 97. A specialist wants a PC to refuse to start from any removable device that is not trusted or has no valid signature. Which setting should be configured? Here are the options. Option A. USB settings. Option B. Single sign-on. Option C. Secure Boot. Option D. BIOS password. Pause the video now if you want time to think about the answer.
The correct answer is C. Secure Boot. Secure Boot is a UEFI feature that checks digital signatures on boot files and devices before the system starts, so untrusted media is refused. Now, why are the other options incorrect? Option A is incorrect. Turning USB ports on or off does not judge whether a connected device is trusted. Option B is incorrect. Single sign-on is a login convenience and has nothing to do with boot security. Option D is incorrect. A BIOS password limits who can change firmware settings but does not block unsigned boot devices. Therefore, C, Secure Boot, is the correct answer.
Play from 2:10:48 Question 98. A monitoring team needs to mirror the traffic of one wired link to an analyzer, using a tool that does not need an address of its own on the network. Which of the following fits? Here are the options. Option A. Cable tester. Option B. Network tap. Option C. Toner probe. Option D. Loopback plug. Pause the video now if you want time to think about the answer.
The correct answer is B. Network tap. A network tap sits in line with the cable and passively duplicates everything that passes to a monitoring port, without needing an IP address or changing the traffic. Now, why are the other options incorrect? Option A is incorrect. A cable tester checks wiring continuity and pinouts, not live traffic. Option C is incorrect. A toner probe identifies cables rather than capturing traffic. Option D is incorrect. A loopback plug checks a port by echoing its own signal back and cannot capture traffic. Therefore, B, Network tap, is the correct answer.
Play from 2:12:07 Question 99. A network admin needs a device that can enforce rules about which traffic to permit or block. Which of the following has ACL capability? Here are the options. Option A. Unmanaged switch. Option B. DSL. Option C. PoE injector. Option D. Firewall. Pause the video now if you want time to think about the answer.
The correct answer is D. Firewall. A firewall evaluates traffic against ACL rules to permit or deny it. A PoE injector only adds power, DSL is a connection technology, and an unmanaged switch cannot be configured. Now, why are the other options incorrect? Option A is incorrect. An unmanaged switch has no configuration, so it cannot hold access control lists. Option B is incorrect. DSL is an internet connection type, not a filtering device. Option C is incorrect. A PoE injector only supplies power and does not filter traffic. Therefore, D, Firewall, is the correct answer.
Play from 2:13:29 Question 100. A worker finds that a company phone has no internet only while standing in the parking lot. What should the technician check first? Here are the options. Option A. GPS configuration. Option B. Hotspot capability. Option C. Cellular data settings (3G/4G/5G/LTE). Option D. SIM connection. Pause the video now if you want time to think about the answer.
The correct answer is C. Cellular data settings (3G/4G/5G/LTE). When the phone works elsewhere but not in one place, the first thing to confirm is that mobile data is turned on and configured for the available cellular networks. A bad SIM would break service everywhere, hotspot is for sharing, and GPS has no link to data. Now, why are the other options incorrect? Option A is incorrect. GPS settings do not affect cellular data service. Option B is incorrect. Hotspot is for sharing the phone's connection with other devices. Option D is incorrect. A faulty SIM would cause problems in every location, not just the parking lot. Therefore, C, Cellular data settings (3G/4G/5G/LTE), is the correct answer.
