Return stack buffer helps predict: MCQ with Answer and Explanation

Return stack buffer helps predict:

A. Function returns accurately

B. Cache hits

C. ALU results

D. Data loads

Answer: Option A

For CALL/RET pairs.

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

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Question #1 Report Error

Multi-level cache hierarchy reduces:

A. Core count

B. Average memory access time

C. Clock frequency

D. Instruction set

Correct Answer: Option B

Explanation:
Exploits locality.

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

Question #2 Report Error

Which is essential for virtualization?

A. Basic ALU

B. Low core count

C. Small cache

D. Hardware-assisted virtualization extensions

Correct Answer: Option D

Explanation:
Like VT-x or AMD-V.

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

Question #3 Report Error

The retirement queue tracks:

A. Instructions in flight for in-order commit

B. Fetched only

C. Memory requests

D. Decoded uops

Correct Answer: Option A

Explanation:
Maintains correctness.

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