Electronics and Communication Engineering - Microprocessors

11.
Computer virus can hide itself in a diskette but not in a hard disk.
True
False
Answer: Option
Explanation:

Computer virus can hide in hard disk also.


12.
The size of cache memory in most microcomputers is about
a few bytes
a few kilobytes
a few megabytes
a few gigabytes
Answer: Option
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?
Cache
Primary
Mass storage
Off line back up
Answer: Option
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
CPU
ALU
Primary memory
Secondary memory
Answer: Option
Explanation:

Primary memory holds these during processing of instructions.


15.
Which of the following is not a valid variable name in C?
p o, t
p o t
po_t
p_ot
Answer: Option
Explanation:

Comma is not allowed.