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2021 Feb comptia a+ operating system 220-802:
Q521. - (Topic 5)
Which of the following describes the function of a firewall?
A. Hardware or software designed to analyze data packets to determine the origin or destination of the packet
B. Hardware or software designed to block packets based on traffic behavior over time
C. Hardware or software designed to compare data packets to known signatures
D. Hardware or software designed to block certain packets from entering or leaving a network
Answer: D
Q522. - (Topic 5)
Ann, a small business owner, would like to implement wireless networking for her business but wants to be sure the wireless is ONLY accessible from within her business’ premises.
Which of the following would BEST accomplish this?
A. Disabling SSID broadcast to ensure that only employees know the SSID
B. Using unidirectional antennas and reducing radio power levels appropriately
C. Assigning DHCP addresses that expire after a shorter period of time
D. Using omni-directional antennas and reducing radio power levels appropriately
Answer: B
Q523. - (Topic 2)
Which of the following areas of a file system should a standard user have restricted permissions to in order to promote a security best practice? (Select TWO).
A. Temporary Internet Files
B. My Document Files
C. Windows System Files
D. Network Files
E. Program Files
Answer: C,E
Explanation:
Windows program files are important for Windows operating system. If these files are deleted, Windows will corrupt. Similarly program files are related to applications and programs installed on a computer. These are highly sensitive files because they are related to the functioning of the operating system and the applications installed on it.
Q524. - (Topic 5)
A technician wants to verify a remote printer that has been power cycled is back online. The technician would use which of the following commands and switch?
A. tracert -t
B. ipconfig /renew
C. ping -t
D. nslookup –ttl
Answer: C
Q525. - (Topic 4)
After accidentally removing a hard drive from a server with three drives in a RAID 5 configuration, a technician notices the server locks up and shuts down. Which of the following can the technician do to quickly fix the problem?
A. Replace the RAID controller and boot.
B. Reinsert the drive and boot.
C. Plug the drive back in, the system will resume automatically.
D. Remove all drives and rebuild the array.
Answer: B
Explanation:
Just reinsert the drive and boot the computer. The computer will start since it is a RAID 5 configuration.
Refresh a+ 220-801 and 220-802 pdf:
Q526. - (Topic 5)
A user reports that they are unable to use their DVD-ROM drive in their Windows 7 desktop PC. Which of the following could be a possible cause to this problem?
A. Media Player is not installed
B. DVD drivers need to be updated
C. DVD drive is not set to boot in BIOS
D. SATA port is not on in BIOS
Answer: D
Q527. - (Topic 1)
Which of the following System Tools would be the BEST one to perform a regular archiving of information on a PC?
A. ROBOCOPY
B. XCOPY
C. Backup
D. System Restore
Answer: C
Explanation: http://windows.microsoft.com/en-us/windows7/products/features/backup-and-restore
Q528. - (Topic 1)
A customer is concerned about a computer that repeatedly beeps when attempting to power on. Which of the following is MOST likely the cause?
A. Network cable is unplugged
B. USB 2.0 is plugged into USB 1.1 port
C. RAM not seated properly
D. Optical media was left in the drive
Answer: C
Explanation: http://antony492.com/unseated-ram/
Q529. - (Topic 5)
A user reports that their printouts contain a shadow of the previous image. Which of the following is MOST likely the cause?
A. Separation pads
B. Fuser assembly
C. Corona wire
D. Pickup assembly
Answer: B
Q530. - (Topic 4)
A user is running a RAID 0 array and has problems with one of the drives. Which of the following actions will the technician take NEXT?
A. Replace the failing drive and let the RAID recover.
B. Add an additional drive to the array and let the RAID recover.
C. Replace the drive; all the data is lost and cannot be recovered.
D. Remap the RAID array to another drive letter to recover the data.
Answer: C
Explanation: http://www.pcworld.com/article/2026358/multiple-hard-drives-working-together-all-about-raids.html