Electronics and Communication Engineering - Microprocessors

11. 

Computer virus can hide itself in a diskette but not in a hard disk.

A. True
B. False

Answer: Option B

Explanation:

Computer virus can hide in hard disk also.


12. 

The size of cache memory in most microcomputers is about

A. a few bytes
B. a few kilobytes
C. a few megabytes
D. a few gigabytes

Answer: Option B

Explanation:

Size of Cache memory varies from about 16 K bytes to about 256 K bytes.


13. 

Which of the following computer memories is fastest?

A. Cache
B. Primary
C. Mass storage
D. Off line back up

Answer: Option A

Explanation:

Cache memory has a speed of about four times the speed of main memory. It is a small high speed memory.


14. 

During processing the instructions, data, intermediate results and final results in a computer are held in

A. CPU
B. ALU
C. Primary memory
D. Secondary memory

Answer: Option C

Explanation:

Primary memory holds these during processing of instructions.


15. 

Which of the following is not a valid variable name in C?

A. p o, t
B. p o t
C. po_t
D. p_ot

Answer: Option A

Explanation:

Comma is not allowed.