Which command in Linux is used to display the currently logged-in user accounts and terminal details? MCQ with Answer and Explanation

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Which command in Linux is used to display the currently logged-in user accounts and terminal details?

A. uname

B. id

C. pwd

D. who

Answer: Option D

Solution (By JKSSB Mock Tests)

The 'who' command queries system accounting data to display information about users currently logged into the operating system session.

This question belongs to: Computer Operating Systems

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Question #1

In Linux, the 'df' command with '-h' option shows:

A. Disk space usage in human-readable format

B. File system type

C. Mount options

D. Inode usage

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Correct Answer: Option A

Explanation:
df -h displays file system usage in GB/MB, making it easier to read.

This question belongs to: Computer Operating Systems

Question #2

In Windows, what does the 'whoami' command display?

A. The current user's username

B. The IP address

C. The system uptime

D. The computer name

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Correct Answer: Option A

Explanation:
whoami returns the domain and username of the current logged-in user.

This question belongs to: Computer Operating Systems

Question #3

Which Linux command is used to mount a file system at boot?

A. systemctl mount

B. mount -a

C. Entries in /etc/fstab

D. All of the above

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Correct Answer: Option D

Explanation:
/etc/fstab defines mount points; mount -a mounts all entries in fstab; systemd can also handle mount units.

This question belongs to: Computer Operating Systems

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