CompTIA CompTIA A+ 220-801 Questions & Answers

• Question 811:

  Which of the following video types has a DB-15 connector?

  A. S-video

  B. DVI-A

  C. DVI-D

  D. VGA

  Correct Answer: D

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

• Question 812:

  Which of the following describes the MAIN difference between a plenum rated cable versus a non-plenum rated cable?

  A. A reduced production of hazardous fumes when subjected to fire

  B. The ability to be bent into tighter turning radiuses within conduit

  C. A reduced noise level when bundled in groups of 20 or more

  D. The ability to transmit data with fewer cross-talk interruptions

  Correct Answer: A

  Plenum cable is sheathed with fire retarded substance. Therefore, the production of hazardous fumes will be lower in plenum cable than in other cables not coated with fire retardant material.

• Question 813:

  A technician installs a biometric device using the manufacturer supplied driver. After confirming the device functions properly, the technician performs Windows and antivirus updates. Which of the following would BEST explain why the biometric device no longer functions?

  A. The recently updated antivirus scanning software is interfering with the proper operations of the biometric device.

  B. A virus that specifically targets retinal scanning software infected the PC because the user was late applying new definitions.

  C. The recently installed Windows updates overwrote the manufacturer's supplied biometric device driver.

  D. The biometric device needs to be recalibrated due to environmental conditions involved with the installation.

  Correct Answer: C

  Microsoft updates Windows oftenly. The update contains drivers as well. The possible reason of the problem is that Windows update manufacturer's device driver during the update process. Check the driver to confirm the issue. You can always install the original driver for the biometric device if this problem occurs.

• Question 814:

  A customer reports that their 4-year-old PC takes a long time to boot. The technician investigates and finds the BIOS is rediscovering the hardware environment at every boot. Which of the following will MOST likely fix this problem?

  A. Change out the CMOS battery on the motherboard.

  B. At the OS level, launch "Device Manager" and re-scan the hardware.

  C. Hit "F9" while the computer is booting, but before the OS starts to load.

  D. Reset the BIOS using the CMOS reset jumper.

  Correct Answer: A

  When CMOS battery loses its juice, the BIOS will act strangely everytime you boot the PC. Change the CMOS battery regularly to keep the BIOS on the motherboard performing optimally.

• Question 815:

  A technician needs to access the system BIOS at boot time on a PC. Which of the following are possible BIOS access keys? (Select TWO).

  A. F2

  B. F12

  C. F8

  D. Delete

  E. Function F4

  F. Control Home

  Correct Answer: AD

  Depending on the system, F2 or delete key can be used to access BIOS during the boot process on a PC. F2 is a common key and is used in majority of PCs with Windows installed.

• Question 816:

  Which of the following devices is MOST likely to outperform a 15,000 rpm SAS hard drive in read speed?

  A. Compact flash

  B. SSD

  C. Tape

  D. SD

  Correct Answer: B

  Reference. http://www.8088.net/blog/index.php/2011/01/24/iops-comparison-solid- state-drive-ssd-15000-7200-5900-5600-rpm/?lang=en

• Question 817:

  Which of the following media has a capacity of 8.6 GB?

  A. CD

  B. DL DVD

  C. DL Blu-ray

  D. DVD

  Correct Answer: B

  A version of DVD called DL DVD has more capacity than any other DVD variety. At 8.6 GB it can hold a lot more data than its predecessors. DL means dual layer. You can write to the either side of the disk. The normal DVD has only single layer to write to whereas DL DVD has both side up and down to write data. Therefore, the capacity is doubled.

• Question 818:

  Which of the following panel types consumes the MOST power?

  A. Plasma

  B. LCD

  C. LED with no backlight

  D. LED with backlight

  Correct Answer: A

  A Light emulsification diode with a backlight consumes more power than an LCD or plasma. First the LED needs power. The backlights are another component that requires power. Although the power an LED consumes is far less than what CRT monitors consumed.

• Question 819:

  A technician is trying to connect the high-end 5.1 surround sound audio system to their Home Theater PC. Front and rear channels produce the sound but the subwoofer and the front speaker seem to be muted. Which of the following would the technician MOST likely check to resolve the issue?

  A. The power cable of the 5.1 surround sound audio system.

  B. The subwoofer and the front channel speaker drivers are installed properly.

  C. The subwoofer and the front channel speakers are not defective.

  D. The subwoofer and the front channel speaker's RCA cable connection to the computer's audio card.

  Correct Answer: D

  The first thing is to check the subwoofer and front channel speaker's RCA cable connection to the audio card. The cable must be inserted in a wrong port.

• Question 820:

  Which of the following expansion cards would provide support for additional internal storage?

  A. Video capture

  B. Modem

  C. USB port

  D. RAID controller

  Correct Answer: D

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