In-order execution processors are simpler but may have: MCQ with Answer and Explanation

In-order execution processors are simpler but may have:

A. Higher complexity

B. No pipeline

C. Always better performance

D. Lower IPC in some workloads

Answer: Option D

Due to stalls on dependencies.

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

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Question #1 Report Error

Dynamic voltage scaling is used to:

A. Reduce cores

B. Optimize power consumption

C. Fix clock speed

D. Increase heat

Correct Answer: Option B

Explanation:
Adjusts voltage and frequency based on workload.

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

Question #2 Report Error

Which register is updated after every instruction fetch?

A. Flag register

B. Accumulator

C. MBR

D. Program Counter

Correct Answer: Option D

Explanation:
PC is incremented to point to next instruction.

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

Question #3 Report Error

The reorder buffer in out-of-order CPUs helps maintain:

A. Memory size

B. Program order for retirement

C. ALU speed

D. Faster fetch

Correct Answer: Option B

Explanation:
Ensures correct sequential appearance of results.

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