Which register is updated after every instruction fetch? MCQ with Answer and Explanation

Question Report Error

Which register is updated after every instruction fetch?

A. Accumulator

B. MBR

C. Program Counter

D. Flag register

Answer: Option C

Solution (By JKExamLibrary)

PC is incremented to point to next instruction.

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

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Practice More CPU (Central Processing Unit) Questions

Question #1 Report Error

The bus that carries data between CPU and memory is called:

A. Control bus

B. Data bus

C. System bus

D. Address bus

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Correct Answer: Option B

Explanation:
Data bus transfers actual data values.

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

Question #2 Report Error

Which extension provides hardware encryption acceleration?

A. AVX only

B. SSE4

C. AES-NI

D. FMA

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Correct Answer: Option C

Explanation:
Speeds up AES algorithms.

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

Question #3 Report Error

Which company developed the x86-64 architecture extension?

A. AMD

B. Qualcomm

C. Intel only

D. ARM

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Correct Answer: Option A

Explanation:
AMD64 extended the original x86.

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

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