The write-back cache policy updates main memory: MCQ with Answer and Explanation

The write-back cache policy updates main memory:

A. Immediately on every write

B. Never

C. Only on read

D. When the cache line is evicted

Answer: Option D

It minimizes memory traffic.

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

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Question #1 Report Error

Which register holds the current instruction's operands address?

A. Status Register

B. Program Counter

C. Instruction Register

D. Memory Address Register

Correct Answer: Option D

Explanation:
MAR is used for memory access addresses.

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

Question #2 Report Error

Out-of-order execution is a feature in:

A. Only embedded systems

B. No processors

C. Basic CPUs only

D. Modern advanced processors

Correct Answer: Option D

Explanation:
It allows reordering instructions for better performance.

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

Question #3 Report Error

AMD's Infinity Fabric is a:

A. Instruction decoder

B. High-speed interconnect for chiplets

C. Power delivery system

D. Cache protocol

Correct Answer: Option B

Explanation:
Enables communication between dies.

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