What is the role of the scheduler in an OS? MCQ with Answer and Explanation

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What is the role of the scheduler in an OS?

A. To control which process runs at what time

B. To manage memory allocation

C. To handle network connections

D. To manage files

Answer: Option A

Solution (By JKSSB Mock Tests)

The scheduler determines the order and time each process executes on the CPU.

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Question #1

What is the role of the graphical user interface (GUI)?

A. Manages hardware

B. Compiles code

C. Processes data

D. Allows visual interaction with the computer

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Correct Answer: Option D

Explanation:
GUI provides visual components like windows and icons for user interaction.

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Question #2

What type of software is a device driver?

A. Application software

B. System software

C. Utility software

D. Firmware

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Correct Answer: Option B

Explanation:
Device drivers are system software that allow the OS to communicate with hardware.

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Question #3

Which of the following is an example of a utility software for checking disk errors?

A. Defrag

B. Format

C. Chkdsk

D. Partition

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Correct Answer: Option C

Explanation:
Chkdsk (Check Disk) scans for and repairs file system errors.

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