Which Linux command displays information about system processes in real-time? MCQ with Answer and Explanation

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Which Linux command displays information about system processes in real-time?

A. ps

B. kill

C. systemd

D. top

Answer: Option D

Solution (By JKSSB Mock Tests)

The 'top' command shows a dynamic, real-time view of running processes, CPU usage, memory, and more.

This question belongs to: Computer Operating Systems

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Question #1

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In Windows Operating Systems, which system tool is explicitly used to optimize disk space by rearranging fragmented files into contiguous sectors?

A. Chkdsk

B. Disk Defragmenter and Optimize Drives

C. Disk Cleanup

D. Task Manager

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Correct Answer: Option B

Explanation:
Disk Defragmenter consolidates fragmented files on a hard drive to improve read/write access speeds and overall system performance.

This question belongs to: Computer Operating Systems

Question #2

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Which Linux command is used to view the contents of a file?

A. cat

B. All of the above

C. less

D. more

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Correct Answer: Option B

Explanation:
cat, more, and less all display file contents; less is interactive, cat dumps entire file.

This question belongs to: Computer Operating Systems

Question #3

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What is the purpose of the Android 'StorageManager'?

A. To access storage volumes and manage storage operations

B. To handle external storage

C. To get storage statistics

D. To format storage

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Correct Answer: Option A

Explanation:
StorageManager provides APIs to query storage volumes, get total/free space, and mount/unmount storage.

This question belongs to: Computer Operating Systems

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