What is the function of the paging system in an OS? MCQ with Answer and Explanation

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What is the function of the paging system in an OS?

A. Manages files

B. Manages user interface

C. Manages network connections

D. Manages virtual memory

Answer: Option D

Solution (By JKSSB Mock Tests)

Paging allows the OS to use secondary storage as an extension of RAM (virtual memory).

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Which of the following is an example of a utility software for system backup?

A. Chkdsk

B. Cleanup

C. Defrag

D. Acronis True Image

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Correct Answer: Option D

Explanation:
Acronis True Image is a comprehensive backup and disaster recovery utility.

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Question #2

What is the main function of an API?

A. Provides user interface

B. Defines how software components interact

C. Compiles code

D. Manages hardware

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Correct Answer: Option B

Explanation:
APIs specify protocols for communication between software programs.

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Question #3

Which system component manages the user login process, verifies passwords, and creates security tokens for active operating system sessions?

A. File Explorer Subsystem

B. Disk Cleanup Wizard

C. Application Presentation Manager

D. Authentication and Authorization Subsystem

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Correct Answer: Option D

Explanation:
The authentication subsystem validates user credentials and sets up session permissions based on security policies.

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