The memory ordering model in x86 is: MCQ with Answer and Explanation

Question

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The memory ordering model in x86 is:

A. Weakly ordered always

B. ARM style

C. Strongly ordered with some relaxations

D. No ordering

Answer: Option C

Solution (By JKSSB Mock Tests)

Ensures consistency.

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

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Question #1

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Which register is updated after every instruction fetch?

A. Program Counter

B. MBR

C. Accumulator

D. Flag register

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Correct Answer: Option A

Explanation:
PC is incremented to point to next instruction.

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

Question #2

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Which is a characteristic of ARM processors?

A. Limited to servers

B. CISC architecture

C. Energy efficiency for mobile devices

D. High power consumption desktops

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Correct Answer: Option C

Explanation:
They dominate mobile and embedded markets.

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

Question #3

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The CU generates:

A. Data values

B. User interface

C. Control signals

D. Arithmetic results

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Correct Answer: Option C

Explanation:
Control signals direct the operation of other CPU components.

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

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