Which register is used to store the return address during subroutine calls? MCQ with Answer and Explanation

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Which register is used to store the return address during subroutine calls?

A. Accumulator

B. Flag Register

C. Link Register

D. Program Counter

Answer: Option C

Solution (By JKSSB Mock Tests)

Link Register (in many architectures) holds the return address.

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

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Question #1

In pipelined processors, a data hazard occurs when:

A. Branches are predicted wrong

B. An instruction depends on the result of a previous instruction still in pipeline

C. Clock speed is too high

D. Cache miss happens

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Correct Answer: Option B

Explanation:
Forwarding or stalls are used to resolve them.

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

Question #2

The front side bus (FSB) connects:

A. CPU to chipset/memory

B. Registers internally

C. GPU only

D. ALU to CU

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Correct Answer: Option A

Explanation:
It is the data pathway between processor and other components.

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

Question #3

The branch target buffer (BTB) stores:

A. Status flags

B. Addresses of taken branches

C. Data values

D. Instruction opcodes

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Correct Answer: Option B

Explanation:
For faster branch prediction.

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

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