Explore topic-wise MCQs in Testing Subject.

This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.

1.

Which of the following holds the last instruction fetched?

A. pc
B. mar
C. mbr
D. ir
Answer» E.
2.

The portion of the processor which contains the hardware required to fetch the operations is

A. datapath
B. processor
C. control
D. output unit
Answer» B. processor
3.

What does PC stand for?

A. program changer
B. program counter
C. performance counter
D. performance changer
Answer» C. performance counter
4.

In the instruction ADD A, B, the answer gets stored in

A. b
B. a
C. buffer
D. c
Answer» C. buffer
5.

What does MBR stand for?

A. main buffer register
B. memory buffer routine
C. main buffer routine
D. memory buffer register
Answer» E.
6.

Control Unit acts as the central nervous system of the computer.

A. true
B. false
Answer» B. false
7.

Brain of computer is

A. control unit
B. arithmetic and logic unit
C. central processing unit
D. memory
Answer» D. memory