What is the role of the operating system in memory management? MCQ with Answer and Explanation

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What is the role of the operating system in memory management?

A. Connects to peripherals

B. Allocates memory to running processes

C. Defragments hard disk

D. Permanently stores files

Answer: Option B

Solution (By JKSSB Mock Tests)

The OS manages memory allocation for programs and ensures efficient use of RAM.

This question belongs to: Computer Computer Fundamentals

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Question #1

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The operational speed phase where an internal CPU fetches a binary instruction string directly from main memory addresses is called:

A. Instruction Time (I-Time)

B. Write-back Phase

C. Interrupt Cycle

D. Execution Time (E-Time)

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Correct Answer: Option A

Explanation:
I-Time (Instruction Time) encompasses the early steps of a processor cycle, specifically fetching and decoding an instruction from memory.

This question belongs to: Computer Computer Fundamentals

Question #2

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Which fundamental component of the Von Neumann CPU is responsible for temporarily storing the intermediate results of arithmetic and logical operations?

A. Program Counter

B. Instruction Register

C. System Bus

D. Accumulator

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Correct Answer: Option D

Explanation:
The Accumulator is a special-purpose register within the ALU that stores intermediate calculation results during processing.

This question belongs to: Computer Computer Fundamentals