In Linux, the 'umask' command is used to: MCQ with Answer and Explanation

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In Linux, the 'umask' command is used to:

A. Delete files securely

B. Set default file permissions for newly created files

C. Unmask system files

D. Change user ID

Answer: Option B

Solution (By JKSSB Mock Tests)

umask defines which permissions are removed (masked) by default when a file or directory is created.

This question belongs to: Computer Operating Systems

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Question #1

What is the default command prompt interpreter application executable file in modern Windows?

A. command.com

B. terminal.sys

C. bash.exe

D. cmd.exe

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Correct Answer: Option D

Explanation:
The default command prompt interpreter application file for modern Windows systems is 'cmd.exe'.

This question belongs to: Computer Operating Systems

Question #2

Which of the following is a Linux command used to manage print queues?

A. lpq

B. lpr

C. lp

D. lpc

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Correct Answer: Option C

Explanation:
lp is used to send files to print; lpr is similar; lpq shows queue; lpc controls printers.

This question belongs to: Computer Operating Systems

Question #3

Which of the following commands is used in Linux to copy files or directories from one location to another?

A. cp

B. rm

C. mv

D. ln

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Correct Answer: Option A

Explanation:
The 'cp' command is used in Unix-like systems to copy files or entire directory trees from a source path to a destination path.

This question belongs to: Computer Operating Systems

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