Which Linux command is used to display disk usage in a human-readable format? MCQ with Answer and Explanation

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Which Linux command is used to display disk usage in a human-readable format?

A. lsblk

B. fdisk -l

C. df -h

D. du -h

Answer: Option C

Solution (By JKSSB Mock Tests)

df -h shows file system disk space usage in human-readable format (GB, MB).

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Question #1

In Windows, the 'Snipping Tool' is used for:

A. Editing images

B. Creating GIFs

C. Capturing screenshots

D. Recording screen video

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Correct Answer: Option C

Explanation:
Snipping Tool captures screen regions; newer Windows has Snip & Sketch.

This question belongs to: Computer Operating Systems

Question #2

What type of kernel configuration runs basic scheduling routines in kernel space but offloads device drivers and file systems to user space to maximize stability?

A. Hybrid Architecture

B. Monolithic Kernel

C. Exokernel Layout

D. Microkernel

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Correct Answer: Option D

Explanation:
Microkernels improve system resilience by restricting kernel space to essential primitives, isolating driver crashes from bringing down the core OS.

This question belongs to: Computer Operating Systems

Question #3

Which Linux command is used to display the kernel version?

A. uname -r

B. kernel -v

C. version

D. lsb_release -a

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Correct Answer: Option A

Explanation:
uname -r shows the kernel release version; uname -a gives all system info.

This question belongs to: Computer Operating Systems

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