Discussion
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- 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
- 8
- 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
Computer Hardware problems
Search Results
Correct Answer: led display
Correct Answer: 384 kb
Correct Answer: memory
Correct Answer: The area where all of the processing takes place
Correct Answer: non-static compressed air
Correct Answer: 40
Correct Answer: Farads
Correct Answer: 9 pin male port
Correct Answer: ohms
Correct Answer: A wrist strap
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