What is the primary function of the 'Shell' component in Linux distributions? MCQ with Answer and Explanation

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What is the primary function of the 'Shell' component in Linux distributions?

A. To interpret text-based commands from the user and interface with the operating system kernel.

B. To compile application source code.

C. To provide physical protection to storage devices.

D. To manage physical RAM refresh cycles.

Answer: Option A

Solution (By JKSSB Mock Tests)

The shell is a command language interpreter that executes commands entered via text terminals or input shell script sequences.

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Question #1

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Which Android component handles receiving and processing system-wide announcements or intents, such as a low battery alert or device boot completion?

A. Activity

B. Content Provider

C. Service

D. Broadcast Receiver

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Correct Answer: Option D

Explanation:
A Broadcast Receiver is an Android application component that allows the app to listen for and respond to system-wide or app-issued broadcast messages.

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Question #2

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In Windows, the 'Telnet' command is used for:

A. Network file transfer

B. Web browsing

C. Remote command-line access to another host

D. Email communication

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Correct Answer: Option C

Explanation:
Telnet is a protocol for remote login to a host; it's not secure and often disabled.

This question belongs to: Computer Operating Systems

Question #3

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What process occurs during a 'Warm Boot' of a computer system?

A. The system is turned on from a complete powered-off state.

B. The operating system is reinstalled entirely from an external installation drive.

C. The computer is reset or restarted using software instructions without cutting off physical electrical power.

D. The CPU is physically heated using diagnostic software tools.

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Correct Answer: Option C

Explanation:
A warm boot (rebooting) occurs when a computer is already running and is restarted using system options or keys without interrupting the electrical power supply.

This question belongs to: Computer Operating Systems

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