Which helps in debugging CPU issues? MCQ with Answer and Explanation

Which helps in debugging CPU issues?

A. Performance Monitoring Counters (PMCs)

B. Screen resolution

C. Keyboard input

D. Only visual inspection

Answer: Option A

Hardware counters for profiling.

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

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Question #1 Report Error

Multi-level cache hierarchy reduces:

A. Clock frequency

B. Core count

C. Average memory access time

D. Instruction set

Correct Answer: Option C

Explanation:
Exploits locality.

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

Question #2 Report Error

The coherence protocol like MESI is for:

A. Power saving

B. Instruction fetch

C. ALU operations

D. Cache coherence in multi-core systems

Correct Answer: Option D

Explanation:
Maintains consistent data across caches.

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

Question #3 Report Error

The front-end pipeline bottleneck often involves:

A. Retirement stage

B. Memory writes

C. Execution units

D. Instruction fetch and decode bandwidth

Correct Answer: Option D

Explanation:
It limits instruction supply.

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