The opcode fetch is part of: MCQ with Answer and Explanation

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The opcode fetch is part of:

A. Write-back stage

B. Memory stage

C. Instruction fetch stage

D. Execution stage

Answer: Option C

Solution (By JKSSB Mock Tests)

First step in processing an instruction.

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

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Question #1

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Dynamic frequency scaling is also known as:

A. CPU throttling or DVFS

B. Underclocking only

C. Overclocking

D. Static speed

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Correct Answer: Option A

Explanation:
It adjusts frequency based on workload.

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

Question #2

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The Control Unit can be implemented as:

A. Hardwired only

B. ALU based

C. Hardwired or microprogrammed

D. Software only

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Correct Answer: Option C

Explanation:
Both designs are used depending on flexibility needs.

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

Question #3

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The carry flag is set during:

A. Unsigned arithmetic overflow

B. Negative numbers

C. Signed overflow

D. Zero result

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Correct Answer: Option A

Explanation:
Important for multi-precision arithmetic.

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

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