Which of the following is a valid file permission represented in octal for a directory with rwx for owner, rx for group, and rx for others? MCQ with Answer and Explanation

Which of the following is a valid file permission represented in octal for a directory with rwx for owner, rx for group, and rx for others?

A. 644

B. 550

C. 755

D. 700

Answer: Option C

755 = owner rwx (4+2+1), group rx (4+1), others rx (4+1).

This question belongs to: Computer Operating Systems

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Question #1 Report Error

In Windows, the command 'systeminfo' displays:

A. Detailed system configuration including OS version, memory, and network

B. Only the OS version

C. List of installed updates

D. Disk usage

Correct Answer: Option A

Explanation:
systeminfo provides a comprehensive summary of system hardware and software configuration.

This question belongs to: Computer Operating Systems

Question #2 Report Error

In Windows, the 'PowerShell' is:

A. A task automation framework and scripting language

B. An advanced command-line shell

C. A replacement for Command Prompt

D. All of the above

Correct Answer: Option D

Explanation:
PowerShell is a powerful scripting environment with cmdlets, object-oriented pipeline, and automation capabilities.

This question belongs to: Computer Operating Systems

Question #3 Report Error

Which Linux command is used to display system hardware information?

A. lsusb

B. lshw

C. dmesg

D. lspci

Correct Answer: Option B

Explanation:
lshw (list hardware) provides comprehensive hardware details; other commands show specific devices.

This question belongs to: Computer Operating Systems