Practice 3 for CompTIA A+ Exam: 25 questions, explained answers, and a review routine.
These questions are for study practice only and are not official exam questions.
Question 1
1
A virtual-machine snapshot is stored on the same storage system as the VM. Why is an independent backup still valuable?
Question 2
2
A computer reports no bootable device after an external USB drive is connected. Its internal storage still appears in firmware inventory. What configuration is worth checking first?
Question 3
3
A multifunction printer specification lists automatic two-sided printing but says its document feeder scans one side per pass. What should the user expect?
Question 4
4
A network diagram marks one switch port in the guest VLAN and another in the staff VLAN. What does this logical separation usually aim to control?
Question 5
5
An application is unresponsive, and a support tool offers to end its process. What consequence should be explained before taking that approved step?
Question 6
6
A troubleshooting note says only fixed it. Which replacement record would be more useful?
Question 7
7
A technician closes every application and powers a workstation off normally. Which component is intended to retain the saved project files without power?
Question 8
8
Two workstations are manually configured with the same IPv4 address on the same local network. Intermittent connectivity follows. What is the likely addressing problem?
Question 9
9
An update dashboard says an approved operating-system update is installed but pending restart. What must the technician consider before declaring the update fully active?
Question 10
10
An application requires 8 GB of available storage for an update, but the target volume has 3 GB free. Which condition directly explains the installation refusal?
Question 11
11
An organization must sanitize a solid-state drive according to an approved media policy. Why should it not assume a method intended only for magnetic media is appropriate?
Question 12
12
Which device role primarily provides wireless clients with access to an existing local wired network?
Question 13
13
A support policy requires staff to use standard accounts for daily work and elevate only for approved administrative tasks. What principle does this implement?
Question 14
14
A known-good keyboard works in one USB port but not another on the same computer. Which comparison is most informative next?
Question 15
15
Two cables have USB-C connectors, but only one supports the monitor video mode required by a laptop. What conclusion is supported?
Question 16
16
A newly connected workstation automatically receives an address, subnet mask, gateway, and DNS-server setting from the network. Which service commonly supplies this lease information?
Question 17
17
An employee knows a password and enters a one-time code produced by an enrolled authenticator device. What distinguishes this from entering two memorized passwords?
Question 18
18
A device repeatedly disconnects at a particular time, and several logs record different time zones. What should the technician do before correlating events?
Question 19
19
Before handling an unplugged computer internal circuit board, a technician consults a service guide that requires an approved electrostatic-discharge workstation. Why is this precaution relevant?
Question 20
20
A user reports that a remote application takes a noticeable time to respond to each click even though large file transfers eventually reach high throughput. Which metric is especially relevant to interaction delay?
Question 21
21
A device driver downloaded for a similar model fails installation, while the vendor lists a different package for the exact device identifier and operating system. What should guide package selection?
Question 22
22
A connectivity test succeeds once after several failures. What is the strongest verification approach for an intermittent issue?
Question 23
23
A dock can drive one monitor at the desired resolution but reduces both monitor modes when a second display is connected. The manufacturer table lists a lower shared limit for two displays. What best explains the change?
Question 24
24
A successful loopback test is performed on a computer. Why does this not prove that its cable reaches the network switch?
Question 25
25
A laptop uses full-disk encryption. The organization recovery key exists only in a file on that same encrypted disk. What recovery weakness does this create?
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