What is the purpose of a system call? MCQ with Answer and Explanation

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What is the purpose of a system call?

A. Manages memory

B. Compiles programs

C. Allows user programs to request services from the OS

D. Controls hardware

Answer: Option C

Solution (By JKSSB Mock Tests)

System calls are the interface between user-level processes and the OS kernel.

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What is the difference between a file and a folder?

A. Folder stores files; file stores data

B. Folder is for applications; file is for documents

C. File stores folders; folder stores data

D. They are the same

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Correct Answer: Option A

Explanation:
A folder (directory) is a container for files and other folders.

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Question #2

Which application software type is designed to record financial accounts, track invoices, generate balance sheets, and compute payroll operations for businesses?

A. Accounting Software

B. Word Processor

C. Desktop Publisher

D. Database System Framework

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Correct Answer: Option A

Explanation:
Accounting software streamlines corporate financial tracking, ledger maintenance, tax reporting, and audit trail generations.

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Question #3

Which of the following is an example of a web-based application?

A. Photoshop

B. Google Docs

C. MS Word offline

D. Excel on desktop

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Correct Answer: Option B

Explanation:
Google Docs runs in a web browser without local installation.

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