CompTIA CompTIA A+ 220-801 Questions & Answers

• Question 881:

  Which of the following memory features allows for the protection against random inconsistencies in the transfer of the data?

  A. Low latency

  B. Dual channel

  C. ECC

  D. Single channel

  Correct Answer: C

  Reference. http://en.wikipedia.org/wiki/Error_detection_and_correction

• Question 882:

  Which of the following would provide continuous power to various devices connected to it during a power surge or outage?

  A. Line conditioner

  B. Power strip

  C. Battery backup

  D. Surge suppressor

  Correct Answer: C

  Reference. http://www.howtogeek.com/161479/how-to-select-a-battery-backup-for- your-computer/

• Question 883:

  Which of the following devices might need drivers installed so that it can be recognized by the operating system and function properly?

  A. Speakers

  B. Monitors

  C. Scanners

  D. Projectors

  Correct Answer: C

  Scanner is a peripheral device that needs drivers to function properly. A scanner will not be able to show the scanned page on the computer until it has the necessary files to transfer the data to a PC.

• Question 884:

  A user is requesting assistance in building a custom made PC for home theater use to connect to their existing large LCD screen. Which of the following components should MOST likely be recommended? (Select TWO).

  A. Large IDE hard drive

  B. HDMI output

  C. Dual monitors

  D. RAID array

  E. TV tuner

  Correct Answer: BE

  A Home theater PC is also a TV. So you need to have a TV tuner card that will show cable on the home theater PC. You would also need an HDMI output to connect the PC to a large LCD screen for optimal viewing.

• Question 885:

  The helpdesk technician has been tasked to reinstall the OS on a desktop and has already inserted the OS install disk in the CD-ROM. Which of the following would MOST likely need to be configured within the BIOS to continue reinstalling the OS?

  A. BIOS password

  B. Flash BIOS for firmware upgrade

  C. Boot sequence

  D. Clock speeds

  Correct Answer: C

  To boot the OS from the CD ROM, you need to change the boot sequence to boot from CD ROM first. Normally, the boot sequence is to boot from hard disk and if it is unable to find boot files there, it will look for it in a CD ROM. After that, it will look into other places like a floppy disk drive and PXE boot.

• Question 886:

  Which of the following input devices allows multiple PCs to share a common display?

  A. Router

  B. Bridge

  C. KVM

  D. Wireless keyboard

  Correct Answer: C

  Reference. http://www.webopedia.com/TERM/K/KVM_switch.html

• Question 887:

  Which of the following are the MOST important considerations when configuring a PC that will be used for a CAD / CAM workstation? (Select TWO).

  A. Gigabit NIC

  B. HDMI output

  C. Maximum RAM

  D. Powerful processor

  E. High end audio output

  Correct Answer: CD

  Reference. http://www.physicsforums.com/showthread.php?t=499107

• Question 888:

  Which of the following represents a connector that supports the connection of external devices? (Select TWO).

  A. IEEE1394

  B. eSATA

  C. EIDE

  D. SATA

  E. IDE

  Correct Answer: AB

  Both Firewire (IEEE 1394) and eSATA connectors can be used to connect external devices.

• Question 889:

  Which of the following expansion slots would support the HIGHEST transfer speeds for high-end graphics cards? (Select TWO).

  A. PCIe

  B. AGP 8x

  C. PCI

  D. ISA

  E. AGP

  Correct Answer: AB

  Reference. http://www.srgclub.org/VideoCards-Monitors.html (See PCI Express)

• Question 890:

  After installing a bar code reader, which of the following is commonly done to configure the reader?

  A. Scan in program codes

  B. Enable the code reader in the BIOS

  C. Use Device Manager to enable I/R ports

  D. Adjust jumper switches

  Correct Answer: A

  To enable the bar code reader to function optimally, you need to scan in program codes so that it can identify the objects later on.