The x86 ISA is: MCQ with Answer and Explanation

Question

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The x86 ISA is:

A. Completely new each time

B. Fixed 32-bit

C. Backward compatible across generations

D. RISC based

Answer: Option C

Solution (By JKSSB Mock Tests)

Maintains compatibility.

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

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Question #1

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The term 'IPC' in CPU performance stands for:

A. Input Per Core

B. Internal Processing Cache

C. Instructions Per Cycle

D. Integrated Peripheral Controller

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Correct Answer: Option C

Explanation:
Higher IPC means better efficiency per clock.

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

Question #2

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The Control Unit can be implemented as:

A. Hardwired only

B. Hardwired or microprogrammed

C. Software only

D. ALU based

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Correct Answer: Option B

Explanation:
Both designs are used depending on flexibility needs.

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

Question #3

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Which register temporarily holds data being processed by the ALU?

A. Accumulator

B. Program Counter

C. Address Register

D. Status Register

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Correct Answer: Option A

Explanation:
The Accumulator is commonly used to hold operands and results of ALU operations.

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

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