10 free CompTIA Tech+ FC0-U71 practice questions with the correct answer and a full explanation for each, taken from the CertStash pack of 192 questions. Work through them, then open each answer to check your reasoning.
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Question 1
Which of the following is the most important consideration when opening a file on an OS GUI?
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Correct answer: A. File extension
The file extension is the most critical consideration when opening a file on a GUI because it determines which application the OS will use to open the file and how the file will be interpreted. The extension tells the system what type of file it is (e.g., .txt for text, .pdf for documents, .exe for executables), which is essential for proper file handling and security.
Why the other options are wrong
- B. Default permissions affect access control but not how or whether a file opens initially.
- C. Backup policy is a maintenance consideration, not relevant to the immediate act of opening a file.
- D. Data compression affects storage efficiency but not the primary consideration when opening a file.
Question 2
A database has the following schema:
Which of the following is the number of records in the schema?
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Correct answer: B. 4
A record in a database is a single row of data in a table. Examining the table provided, there are 5 rows total: one header row (ID, Name, Age) and four data rows containing John, Jane, Allison, and Anna. Since the header row is metadata defining the schema structure rather than actual data records, the number of records in the schema is 4.
Why the other options are wrong
- A. 3 is incorrect; there are four distinct data rows, not three.
- C. 12 is the ID number of one record (Allison's row), not the total count of records.
- D. 21 is the ID number of another record (Anna's row), not the total count of records.
Question 3
Which of the following devices extends the range of a network?
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Correct answer: D. Access point
An access point is specifically designed to extend wireless network range by receiving signals from a wireless router and amplifying/retransmitting them to cover a larger area. This is its primary function in extending network coverage.
Why the other options are wrong
- A. A modem connects to an ISP and converts signals but does not extend network range.
- B. A server provides services and storage but is not designed to extend network coverage range.
- C. A host firewall is a software security tool on individual devices and does not extend network range.
Question 4
A user receives a notification about a new software vulnerability.
Which of the following is the best way to secure the software?
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Correct answer: B. Applying updates
Applying updates (patches) is the best and most direct way to secure software against a known vulnerability. Software updates contain fixes specifically designed to address identified security vulnerabilities, closing the exploitable gap.
Why the other options are wrong
- A. Configuring a firewall may help block some attacks but does not fix the underlying vulnerability in the software.
- C. Enabling authentication protects access but does not remediate the vulnerability itself.
- D. Uninstalling the program removes functionality and is impractical when updates are available to fix the issue.
Question 5
Which of the following is used to determine whether users accessed inappropriate online content?
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Correct answer: D. Web browser history
Web browser history is the most direct and practical method to determine which websites a user has visited, including inappropriate content. It provides a chronological record of all browsing activity on that device.
Why the other options are wrong
- A. System logs track system events and application activity but do not specifically detail website visits.
- B. Cookie data stores preferences and session information but does not provide a comprehensive view of visited sites or content.
- C. Location tracking determines geographic position but not which online content was accessed.
Question 6
A company updates its password policy to require that all passwords be reset every 60 days.
Which of the following best describes this requirement?
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Correct answer: C. Password expiration
Password expiration is the specific security practice of requiring users to change their passwords at regular intervals (in this case, every 60 days). This is the formal term for mandatory periodic password resets.
Why the other options are wrong
- A. Password complexity refers to requirements about character variety (uppercase, numbers, symbols), not reset frequency.
- B. Password management is a broader concept involving storage and handling of passwords, not specifically about reset intervals.
- D. Password privacy refers to keeping passwords confidential, not about how often they must be changed.
Question 7
Which of the following encryption types protects data at rest?
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Correct answer: A. File-level
File-level encryption encrypts individual files or folders stored on disk, protecting data at rest (when not in transit or use). This prevents unauthorized access to stored data even if the physical storage device is compromised.
Why the other options are wrong
- B. VPN encrypts data in transit over networks, not data at rest on storage devices.
- C. HTTPS encrypts data in transit during web communication, not data stored on disk.
- D. Plaintext is unencrypted data and provides no protection at all.
Question 8
Which of the following is the smallest storage unit?
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Correct answer: C. Kilobyte
A kilobyte (KB) is the smallest storage unit among the options listed. The hierarchy from smallest to largest is: Kilobyte (KB) < Megabyte (MB) < Terabyte (TB) < Petabyte (PB). One kilobyte equals 1,024 bytes.
Why the other options are wrong
- A. A petabyte is 1,024 terabytes, making it the largest unit listed.
- B. A terabyte is 1,024 gigabytes, much larger than a kilobyte.
- D. A megabyte is 1,024 kilobytes, larger than a kilobyte.
Question 9
A user lives in a remote area that does not have cabling or towers available. The user wants to connect to the internet.
Which of the flowing is the best solution?
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Correct answer: D. Satellite
Satellite internet is the best solution for remote areas without terrestrial infrastructure. Satellites can provide connectivity anywhere with a clear view of the sky, making it ideal for regions lacking cable, towers, or traditional broadband infrastructure.
Why the other options are wrong
- A. Fiber optic requires extensive cabling infrastructure, which is explicitly stated as unavailable in the remote area.
- B. DSL requires telephone lines and proximity to service providers, not viable in remote areas without cabling.
- C. Cellular requires tower infrastructure, which the question states is not available in this remote location.
Question 10
Which of the following display types is bidirectional?
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That was 10 of 192.
The full CompTIA Tech+ FC0-U71 pack has all 192 questions, each with the answer, the explanation and why the other options are wrong, plus a questions-only copy for timed runs. US$39, paid once, with free monthly updates and a pass-or-your-money-back guarantee.