logo

CuriousTab

CuriousTab

Discussion


Home Computer Science Computer Hardware Comments

  • Question
  • How many DMA channels are there in an AT class PC?


  • Options
  • A. 3
  • B. 4
  • C. 7
  • D. 8
  • E. None of the above

  • Correct Answer



  • Computer Hardware problems


    Search Results


    • 1. What should you replace if the brightness or contrast adjustments were malfunctioning on a laptop?

    • Options
    • A. fuse
    • B. led display
    • C. adjustment switch
    • D. led display cable
    • E. None of the above
    • Discuss
    • 2. What is the size of the reserved memory area?

    • Options
    • A. 64 kb
    • B. 384 kb
    • C. 640 kb
    • D. 1024 kb
    • E. None of the above
    • Discuss
    • 3. A parity error usually indicates a problem with:

    • Options
    • A. memory
    • B. hard drive
    • C. hard drive controller
    • D. I/O controller
    • E. power supply
    • Discuss
    • 4. One of the major components of a PC is the Central Processing Unit (CPU) which can be best described as:

    • Options
    • A. The device that sends the monitor signals telling it what to display
    • B. The area that regulates all of the system power usage
    • C. The area where all the of the Basic input/output routines are stored
    • D. The area where all of the processing takes place
    • E. None of the above
    • Discuss
    • 5. Dust in a computer actually increases the size of the magnetic fields inside it. This is not good, so you must occasionaiy dust, I trust. What's the best way to do this?

    • Options
    • A. reverse vacuum
    • B. any small vacuum device
    • C. blow real hard on the system board
    • D. use a lint-free cloth and wipe gently
    • E. non-static compressed air
    • Discuss
    • 6. IDE cables have how many pins?

    • Options
    • A. 25
    • B. 50
    • C. 100
    • D. 40
    • E. 65
    • Discuss
    • 7. A capacitor is measured in which of the following units?

    • Options
    • A. Volts
    • B. Ohms
    • C. Farads
    • D. Resistance
    • E. None of the above
    • Discuss
    • 8. COM1 is typically represented by which of the following?

    • Options
    • A. 15 pin port
    • B. 9 pin male port
    • C. 9 pin female port
    • D. 25 pin male port
    • E. None of the above
    • Discuss
    • 9. Resistance is measured in units of:

    • Options
    • A. ohms
    • B. farads
    • C. helids
    • D. amperes
    • E. volts
    • Discuss
    • 10. 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


    Comments

    There are no comments.

Enter a new Comment