What is the purpose of a dynamic link library (DLL)? MCQ with Answer and Explanation

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What is the purpose of a dynamic link library (DLL)?

A. Manages hardware

B. Stores user data

C. Controls memory

D. Contains reusable code for programs

Answer: Option D

Solution (By JKSSB Mock Tests)

DLL files contain code and data shared by multiple programs to save memory.

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Question #1

What is the main characteristic of firmware?

A. It is non-volatile and hardware-specific

B. It is volatile

C. It is easily modifiable

D. It is user-installed

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Correct Answer: Option A

Explanation:
Firmware is stored in non-volatile ROM and is closely tied to specific hardware.

This question belongs to: Computer Computer Software

Question #2

What is the purpose of a device driver?

A. To manage user accounts

B. To connect to the internet

C. To allow the OS to communicate with hardware devices

D. To edit text documents

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Correct Answer: Option C

Explanation:
A device driver is system software that enables the OS to interact with specific hardware peripherals.

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Question #3

A utility tool that tracks application installation pathways in real-time to generate clean rollback profiles for flawless software removal later is a/an:

A. System Boot Loader

B. Disk Partitioning Tool

C. File Compactor Engine

D. Advanced Uninstaller Utility

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Correct Answer: Option D

Explanation:
Advanced uninstallers monitor installations to build detailed profiles of added files and registry changes, ensuring clean removal later.

This question belongs to: Computer Computer Software

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