In Linux, the 'chown' command can change both owner and group. Which option changes only the group? MCQ with Answer and Explanation

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In Linux, the 'chown' command can change both owner and group. Which option changes only the group?

A. chown .group

B. chown :group file

C. chown user:

D. chown user:group

Answer: Option B

Solution (By JKSSB Mock Tests)

chown :group sets the group ownership without changing the owner; chown user:group sets both.

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Which Windows tool allows a technician to view and modify low-level entries in the system configuration database using a tree layout?

A. Task Manager Console

B. Disk Management Wizard

C. Registry Editor (regedit)

D. Device Manager Panel

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Correct Answer: Option C

Explanation:
The Registry Editor ('regedit') provides an administrative interface to browse and alter keys inside the core Windows configuration database.

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Question #2

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What does 'Thrashing' indicate in virtual memory system logs?

A. The hard drive is performing a high-speed defragmentation sweep.

B. A network link is heavily saturated with incoming packets.

C. The system is spend overwhelmingly more time handling page swaps than processing actual application operations.

D. The CPU core is overheating due to intense graphic gaming.

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Correct Answer: Option C

Explanation:
Thrashing signals a severe memory deficit where the OS continuously pages data back and forth from disk, dropping productive execution to near zero.

This question belongs to: Computer Operating Systems