Test Your Knowledge About CompTIA A+ Essentials Troubleshooting Quiz!

1. Which utility should you use to roll back your system to its previous state?

Sytem Restore

Disk Defragmenter

Backup

Disk Cleanup

System Restore is the correct utility to use in order to roll back your system to its previous state. System Restore allows you to undo system changes that may be causing issues or errors on your computer. It creates restore points, which are snapshots of your system at a specific point in time. By using System Restore, you can revert your computer back to a previous restore point, effectively undoing any changes made after that point and restoring your system to its previous working state.

Explanation

System Restore is the correct utility to use in order to roll back your system to its previous state. System Restore allows you to undo system changes that may be causing issues or errors on your computer. It creates restore points, which are snapshots of your system at a specific point in time. By using System Restore, you can revert your computer back to a previous restore point, effectively undoing any changes made after that point and restoring your system to its previous working state.

2. How many devices can you connect in a single USB host controller?

32

127

64

172

Up to 127 devices may be connected to a single USB host controller.

Explanation

Up to 127 devices may be connected to a single USB host controller.

3. What is the maximum data rate for IEEE 802.11g?

11 Mbit/s

54 Mbit/s

24 Mbit/s

5 Mbit/s

802.11g has a maximum data rate of 54 Mbit/s.

Explanation

802.11g has a maximum data rate of 54 Mbit/s.

4. Which class of fire extinguisher should you use for fires that involve electrical equipments?

Class A

Class B

Class C

Class D

Class C fires involve electrical equipments such as appliances, wiring, circuit breakers and outlets.

Explanation

Class C fires involve electrical equipments such as appliances, wiring, circuit breakers and outlets.

5. What is the first step in the troubleshooting process?

Call the customer.

Verify full system functionality and if applicable implement preventative measures.

Establish a theory of probable cause. (Question the obvious.)

Test the theory to determine cause.

Identify the problem

The first step in the troubleshooting process is to identify the problem. This involves recognizing and understanding the issue at hand, such as determining what is not functioning correctly or what is causing the malfunction. Once the problem is identified, further steps can be taken to address and resolve it.

Explanation

The first step in the troubleshooting process is to identify the problem. This involves recognizing and understanding the issue at hand, such as determining what is not functioning correctly or what is causing the malfunction. Once the problem is identified, further steps can be taken to address and resolve it.

6. A user is complaining that her computer runs slower than when it was new. Which utility should you recommend to fix this problem?

System Restore

Disk Defragmenter

Backup

Disk Cleanup

Disk Defragmenter is the recommended utility to fix the problem of a computer running slower than when it was new. Over time, files on a computer can become fragmented, meaning that different parts of a file are stored in different physical locations on the hard drive. This can slow down the computer's performance as it takes longer to access and read the fragmented files. Disk Defragmenter rearranges the fragmented files, placing them in contiguous blocks on the hard drive, which improves the computer's overall speed and performance.

Explanation

Disk Defragmenter is the recommended utility to fix the problem of a computer running slower than when it was new. Over time, files on a computer can become fragmented, meaning that different parts of a file are stored in different physical locations on the hard drive. This can slow down the computer's performance as it takes longer to access and read the fragmented files. Disk Defragmenter rearranges the fragmented files, placing them in contiguous blocks on the hard drive, which improves the computer's overall speed and performance.

7. What should you do before making any changes to the computer? (Select the best answer.) like?

Identify the Problem

Escalate the problem

Perform a backup

Establish a plan of action

Document your actions so far

Before making any changes to the computer, it is important to perform a backup. This is necessary because making changes to the computer can sometimes result in unexpected issues or data loss. By performing a backup, you ensure that you have a copy of all important files and data in case anything goes wrong during the process of making changes. This allows you to easily restore the computer to its previous state if needed.

Explanation

Before making any changes to the computer, it is important to perform a backup. This is necessary because making changes to the computer can sometimes result in unexpected issues or data loss. By performing a backup, you ensure that you have a copy of all important files and data in case anything goes wrong during the process of making changes. This allows you to easily restore the computer to its previous state if needed.

8. What is the maximum data rate for IEEE 802.11b?

11 Mbit/s

54 Mbit/s

24 Mbit/s

5 Mbit/s

802.11b has a maximum data rate of 11 Mbit/s.

Explanation

802.11b has a maximum data rate of 11 Mbit/s.

9. Where should a laser printer power cable be connected in order to prevent any electrical damage?

It doesn't matter

Surge Protection Only side of a UPS.

Directly into the wall outlet.

Battery Backup / Surge Protection side of a UPS.

A laser printer power cable should be connected to the Surge Protection Only side of a UPS in order to prevent any electrical damage. This is because a UPS (Uninterruptible Power Supply) provides protection against power surges and fluctuations, which can be harmful to electronic devices like laser printers. By connecting the power cable to the Surge Protection Only side of the UPS, the printer is shielded from any potential electrical damage.

Explanation

A laser printer power cable should be connected to the Surge Protection Only side of a UPS in order to prevent any electrical damage. This is because a UPS (Uninterruptible Power Supply) provides protection against power surges and fluctuations, which can be harmful to electronic devices like laser printers. By connecting the power cable to the Surge Protection Only side of the UPS, the printer is shielded from any potential electrical damage.

10. What is the biggest difference between RAID 1 and RAID 0?

RAID 1 is striped, whereas RAID 0 is not.

RAID 1 is a mirror (backup) of one drive.

RAID 0 is a mirror (backup) of one drive.

RAID 0 is faster than RAID 1.

RAID 1 is faster than RAID 0.

RAID 1 is a mirror (backup) of one drive, meaning that it duplicates the data across multiple drives to ensure redundancy and data protection. In contrast, RAID 0 does not provide any redundancy or backup. Instead, it stripes the data across multiple drives to improve performance and increase storage capacity. Therefore, the biggest difference between RAID 1 and RAID 0 is that RAID 1 offers data mirroring and protection, while RAID 0 focuses on performance and capacity.

Explanation

RAID 1 is a mirror (backup) of one drive, meaning that it duplicates the data across multiple drives to ensure redundancy and data protection. In contrast, RAID 0 does not provide any redundancy or backup. Instead, it stripes the data across multiple drives to improve performance and increase storage capacity. Therefore, the biggest difference between RAID 1 and RAID 0 is that RAID 1 offers data mirroring and protection, while RAID 0 focuses on performance and capacity.