Which unit decodes machine instructions? MCQ with Answer and Explanation

Question Report Error

Which unit decodes machine instructions?

A. ALU

B. CU

C. Memory

D. I/O Controller

Answer: Option B

Solution (By JKExamLibrary)

The Control Unit handles instruction decoding.

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

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More CPU (Central Processing Unit) Questions

Question #1 Report Error

Overclocking primarily increases:

A. Clock frequency beyond stock

B. Number of cores

C. Memory capacity

D. Cache size

View Answer & Solution Discuss

Correct Answer: Option A

Explanation:
Requires better cooling and stability testing.

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

Question #2 Report Error

The loop buffer or uop cache stores:

A. Addresses

B. Power states

C. Data from memory

D. Decoded micro-operations for loops

View Answer & Solution Discuss

Correct Answer: Option D

Explanation:
Reduces power by avoiding repeated decode.

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

Question #3 Report Error

The status of 'dirty' bit in cache indicates:

A. Invalid entry

B. Clean data

C. Modified data needing write-back

D. Shared data

View Answer & Solution Discuss

Correct Answer: Option C

Explanation:
For write-back policy.

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

Explore All CPU (Central Processing Unit) MCQs