Which register holds the current instruction's operands address? MCQ with Answer and Explanation

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Which register holds the current instruction's operands address?

A. Status Register

B. Program Counter

C. Instruction Register

D. Memory Address Register

Answer: Option D

Solution (By JKSSB Mock Tests)

MAR is used for memory access addresses.

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

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Question #1

The term 'IPC' in CPU performance stands for:

A. Input Per Core

B. Instructions Per Cycle

C. Integrated Peripheral Controller

D. Internal Processing Cache

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Correct Answer: Option B

Explanation:
Higher IPC means better efficiency per clock.

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

Question #2

Speculative execution in CPU:

A. Executes instructions before knowing if needed

B. Reduces cores

C. Waits for all conditions

D. Increases latency

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Correct Answer: Option A

Explanation:
It improves performance but can have security implications like Spectre.

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

Question #3

Interrupt handling is managed by:

A. ALU

B. External devices only

C. Control Unit

D. Registers only

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Correct Answer: Option C

Explanation:
CU responds to interrupts by saving state and handling requests.

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

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