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Computer Aptitude

COMPUTER HARDWARE MCQs

Total Questions : 350 | Page 17 of 35 pages
Question 161. How many IRQs does a chain of USB devices require?
  1.    1
  2.    2
  3.    3
  4.    4
  5.    None of the above
 Discuss Question
Answer: Option A. -> 1
Question 162. Which provides the fastest data access time?
  1.    RAM
  2.    ROM
  3.    CD-ROM
  4.    Hard disk
  5.    Floppy disk
 Discuss Question
Answer: Option A. -> RAM
Question 163. How is ink transferred to paper in common ink jet printers?
  1.    Boiling ink
  2.    Crystal
  3.    Motorized pump
  4.    Screens deflect ink on the paper into the proper positions
  5.    Ink is sprayed on to the paper and managed by a nozzle
 Discuss Question
Answer: Option B. -> Crystal
Question 164. Which component must be vacuumed or replaced during preventative maintenance on a laser printer?
  1.    Scanning mirror
  2.    Toner cartridge
  3.    Ozone filter
  4.    All of the above
  5.    None of the above
 Discuss Question
Answer: Option C. -> Ozone filter
Question 165. Which controller would support an external CD-ROM drive?
  1.    ESDI
  2.    ARLL
  3.    MFM
  4.    SCSI
  5.    None of the above
 Discuss Question
Answer: Option D. -> SCSI
Question 166. In inkjet printers, what is the most common problem with the paper tray?
  1.    inconsistent printing
  2.    malfunctioning pick-up rollers
  3.    misalignment of the sheet feeder
  4.    paper jamming on the ink cartridge
  5.    None of the above
 Discuss Question
Answer: Option B. -> malfunctioning pick-up rollers
Question 167. A customer calls and says her computer won't boot, she can hear noises and can see lights on the box, but nothing comes up on the screen, what should you take to the site to fix the problem?
  1.    hard drive
  2.    video card
  3.    power cable
  4.    power supply
  5.    None of the above
 Discuss Question
Answer: Option B. -> video card
Question 168. The DC voltage on most circuit boards is:
  1.    -12 volts
  2.    0 volts
  3.    +5 volts
  4.    +12 volts
  5.    None of the above
 Discuss Question
Answer: Option C. -> +5 volts
Question 169. On a dot-matrix printer, regular lube maintenance should be followed, but this component should never be lubed:
  1.    Platten bearings
  2.    Carriage rails
  3.    Printhead
  4.    Paper advance bearings
  5.    None of the above
 Discuss Question
Answer: Option C. -> Printhead
Question 170. What voltage does a 586 system use?
  1.    +12 volts
  2.    + 5 volts
  3.    + 8 volts
  4.    +3.3 volts
  5.    None of the above
 Discuss Question
Answer: Option B. -> + 5 volts

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