Computer Science - Computer Fundamentals

11. 

Which of the following input/output devices is not associated with personal computers?

A. mice
B. color monitors
C. punched cards
D. dot-matrix printers
E. optical scanners

Answer: Option C

Explanation:

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12. 

The ALU of a computer responds to the commands coming from

A. primary memory
B. control section
C. external memory
D. cache memory
E. None of the above

Answer: Option B

Explanation:

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13. 

The heart of any computer is the

A. CPU
B. Memory
C. I/O Unit
D. Disks
E. None of the above

Answer: Option A

Explanation:

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14. 

Which of the following are likely to jam the read/write head of a disk pack?

A. Dust
B. Smoke particle
C. Finger print smudge
D. All of the above
E. None of the above

Answer: Option D

Explanation:

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15. 

Impact printers

A. strike a ribbon against the paper to produce character images
B. include ink-jet and thermal devices
C. are more expensive than Laser printers
D. use optical technology
E. None of the above

Answer: Option A

Explanation:

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