Which register is updated after every instruction fetch? MCQ with Answer and Explanation

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Which register is updated after every instruction fetch?

A. Program Counter

B. Accumulator

C. MBR

D. Flag register

Answer: Option A

Solution (By JKSSB Mock Tests)

PC is incremented to point to next instruction.

This question belongs to: Computer CPU (Central Processing Unit)

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Question #1

The memory controller can be:

A. Part of ALU

B. Integrated in the CPU

C. Irrelevant

D. Always external

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Correct Answer: Option B

Explanation:
On-die memory controller reduces latency.

This question belongs to: Computer CPU (Central Processing Unit)

Question #2

Which of the following is a type of register that holds the address of the next instruction?

A. Accumulator

B. Program Counter

C. Memory Address Register

D. Instruction Register

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Correct Answer: Option B

Explanation:
The Program Counter (PC) keeps track of the address of the next instruction to be executed.

This question belongs to: Computer CPU (Central Processing Unit)

Question #3

The Instruction Pointer is another name for:

A. MAR

B. MBR

C. Program Counter

D. Accumulator

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Correct Answer: Option C

Explanation:
It points to the next instruction in memory.

This question belongs to: Computer CPU (Central Processing Unit)

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