CompTIA FC0-U21 Online Practice Questions and Exam Preparation

CompTIA FC0-U21 Online Questions & Answers

• Question 131:

  Which of the following SCSI IDs is generally recommended for the CD-ROM drive?

  A. 3
  B. 1
  D. 7
  A. 3

• Question 132:

  Which of the following is a device that is connected to the Web continuously for an indefinite time and supplies a view for anyone who visits its web page over the Internet?

  A. CCTV
  B. Webcam
  C. Microphone
  D. Digital camera
  B. Webcam

• Question 133:

  Which of the following hardware uses flash memory technology?

  A. DDR2 SDRAM
  B. PCMCIA card
  C. Secure digital card
  D. Smart card reader
  C. Secure digital card

• Question 134:

  What is the use of Direct Memory Access (DMA) in a computer?

  A. It optimizes network performance.
  B. It optimizes the CPU's processing speed.
  C. It optimizes the I/O transfer speed.
  D. It refreshes the memory faster.
  C. It optimizes the I/O transfer speed.

• Question 135:

  Which of the following statements is true about refresh rate?

  A. It is the maximum amount of information (bits/second) that can be transmitted along a channel.
  B. It is the number of times in a second that display hardware draws the data.
  C. It is an attribute of visual perception in which a source appears to be radiating or reflecting light.
  D. It is the measure of how often a video source can feed an entire frame of new data to a display.
  B. It is the number of times in a second that display hardware draws the data.

• Question 136:

  Which of the following is the process of bypassing the CPU?

  A. Caching
  B. DMA
  C. Spoofing
  D. Spooling
  B. DMA

• Question 137:

  Which of the following switches of the XCOPY command copies file ownerships and NTFS permissions on files while copying the files?

  A. /s
  B. /p
  C. /r
  D. /o
  D. /o

• Question 138:

  Which of the following is NOT an expansion slot?

  A. EISA
  B. AGP
  C. PCIe
  D. USB
  D. USB

• Question 139:

  What should you do to clean a trackball mouse?

  A. Use water to clean buildup from the rollers.
  B. Use soap to clean buildup from the rollers.
  C. Use a pencil eraser to clean buildup from the rollers.
  D. Use a cotton swab to clean buildup from the rollers.
  D. Use a cotton swab to clean buildup from the rollers.

• Question 140:

  Which of the following devices also works as a video capture card?

  A. TV tuner card
  B. Image Scanner
  C. Web Camera
  D. SD card
  A. TV tuner card