In Windows, the 'System File Checker' (SFC) is used to: MCQ with Answer and Explanation

Question
In Windows, the 'System File Checker' (SFC) is used to:
A. Restore system settings
B. Check disk integrity
C. Scan and repair corrupted system files
D. Update system drivers
Answer: Option C
Solution (By JKSSB Mock Tests)
sfc /scannow verifies the integrity of protected system files and replaces incorrect versions.
This question belongs to: Computer Operating Systems
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Practice More Operating Systems Questions

Question #1
Which of the following is a feature of the Windows 'File History'?
A. Version history of files
B. All of the above
C. Restore files easily
D. Automatic backup of personal files to an external drive
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Correct Answer: Option B

Explanation:
File History backs up libraries, desktop, contacts, and favorites, and keeps versions for recovery.
This question belongs to: Computer Operating Systems
Question #2
Which of the following is a characteristic of a monolithic kernel?
A. All OS services run in kernel mode with high performance
B. It is more stable than microkernel
C. Only the core services run in kernel mode, others in user mode
D. It is easier to extend
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Correct Answer: Option A

Explanation:
Monolithic kernel includes all system services (file system, drivers, memory management) in kernel space, which can improve performance but reduce stability.
This question belongs to: Computer Operating Systems
Question #3
Which Linux command can be used to view the list of currently running processes for the active user?
A. ls
B. df
C. ps
D. cat
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Correct Answer: Option C

Explanation:
The 'ps' command outputs a static snapshot list detailing active user or system processes running within the current environment configuration.
This question belongs to: Computer Operating Systems
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