What does the Control Unit do during the decode phase? MCQ with Answer and Explanation

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What does the Control Unit do during the decode phase?

A. Performs calculations

B. Fetches data from disk

C. Interprets the instruction

D. Stores results

Answer: Option C

Solution (By JKSSB Mock Tests)

Decoding involves interpreting the instruction to determine the required action.

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

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Practice More CPU (Central Processing Unit) Questions

Question #1

Which of the following is NOT a main component of the CPU?

A. Random Access Memory (RAM)

B. Control Unit (CU)

C. Arithmetic Logic Unit (ALU)

D. Registers

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Correct Answer: Option A

Explanation:
RAM is primary memory outside the CPU, while ALU, CU, and Registers are integral parts of the CPU.

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

Question #2

FMA instruction stands for:

A. Flag Management Algorithm

B. Fetch Memory Address

C. Fast Memory Access

D. Fused Multiply-Add

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Correct Answer: Option D

Explanation:
Performs multiplication and addition in one step.

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

Question #3

Multi-level cache hierarchy reduces:

A. Clock frequency

B. Average memory access time

C. Instruction set

D. Core count

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Correct Answer: Option B

Explanation:
Exploits locality.

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

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