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  • Question
  • What do you need to check serial and parallel port?


  • Options
  • A. Port adapter
  • B. Logic probe
  • C. Loopback plug
  • D. All of the above
  • E. None of the above

  • Correct Answer
  • Loopback plug 


  • Computer Hardware problems


    Search Results


    • 1. When connecting a ribbon cable to a connector, how do you know which direction to plug it in?

    • Options
    • A. The red line in the cable goes to the highest pin number
    • B. The colored line in the cable goes to pin #1
    • C. It does not matter
    • D. The blue or red line in the cable goes away from the power connector
    • E. None of the above
    • Discuss
    • 2. What is the highest binary number that can be referred to on a three position jumper block?

    • Options
    • A. 4
    • B. 6
    • C. F
    • D. 1
    • E. None of the above
    • Discuss
    • 3. ESD potential decreases with the use of:

    • Options
    • A. De-ionizing fans
    • B. A wrist strap
    • C. Rubber gloves with matching cap
    • D. A static meter
    • E. None of the above
    • Discuss
    • 4. When measuring AC (Alternating Current) with a multimeter, it is important to maintain the proper polarity.

    • Options
    • A. True
    • B. False
    • Discuss
    • 5. IRQ6 is typically reserved for:

    • Options
    • A. The floppy
    • B. The keyboard controller
    • C. LPT2
    • D. The modem
    • E. None of the above
    • Discuss
    • 6. Which device uses a DMA channel?

    • Options
    • A. Modem
    • B. Network Card
    • C. Sound Card
    • D. All of the above
    • E. None of the above
    • Discuss
    • 7. You get a CMOS checksum error during bootup. What is most likely the cause?

    • Options
    • A. power supply is bad
    • B. BIOS needs updating
    • C. CMOS battery is nearing end of life
    • D. hard drive types are incorrectly defined
    • E. None of the above
    • Discuss
    • 8. During boot-up, the memory test:

    • Options
    • A. Is a superfluous step that should be ignored
    • B. Checks and verifies that contiguous memory is installed
    • C. Is an operational error
    • D. Displays what memory is installed, but nothing else
    • E. None of the above
    • Discuss
    • 9. What's the best way to protect your hard drive data?

    • Options
    • A. regular backups
    • B. periodically defrag it
    • C. run chkdsk at least once a week
    • D. run scandisk at least once a week
    • E. run a regular diagnostic
    • Discuss
    • 10. A modem could be attached to which port?

    • Options
    • A. Parallel port
    • B. ASYNC port
    • C. Keyboard connector
    • D. Video port
    • E. None of the above
    • Discuss


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