Which Linux command is used to add a new user to the system? MCQ with Answer and Explanation

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Which Linux command is used to add a new user to the system?

A. adduser

B. newuser

C. usermod

D. useradd

Answer: Option D

Solution (By JKSSB Mock Tests)

useradd is the low-level command; adduser is a friendlier front-end on some distros, but useradd is common.

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Question #1

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Which of the following application file formats is natively used to distribute and install apps on the Android operating system?

A. .apk

B. .exe

C. .msi

D. .deb

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Correct Answer: Option A

Explanation:
Android packages use the '.apk' (Android Package Kit) file extension to bundle application code, resources, and assets for easy installation.

This question belongs to: Computer Operating Systems

Question #2

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In Windows, which tool is used to manage hardware devices and their drivers?

A. Task Manager

B. Control Panel

C. Device Manager

D. Registry Editor

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Correct Answer: Option C

Explanation:
Device Manager allows users to view and manage hardware devices, update drivers, and troubleshoot device issues.

This question belongs to: Computer Operating Systems

Question #3

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In Windows, the 'System Properties' can be accessed by running:

A. msinfo32

B. systeminfo

C. control system

D. sysdm.cpl

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Correct Answer: Option D

Explanation:
sysdm.cpl opens the System Properties dialog for computer name, hardware, and performance settings.

This question belongs to: Computer Operating Systems

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