What is the function of the Windows 'System Restore' feature? MCQ with Answer and Explanation

Question
What is the function of the Windows 'System Restore' feature?
A. To restore deleted files
B. To reinstall Windows
C. To restore system files and settings to a previous state without affecting personal files
D. To backup entire system image
Answer: Option C
Solution (By JKSSB Mock Tests)
System Restore uses restore points to revert system changes, useful for fixing issues caused by updates or software.
This question belongs to: Computer Operating Systems
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Practice More Operating Systems Questions

Question #1
In Android, the 'adb' (Android Debug Bridge) is used for:
A. Transferring files
B. Managing emulators
C. Installing apps only
D. Debugging and communicating with an Android device via command line
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Correct Answer: Option D

Explanation:
ADB is a versatile tool for developers to execute commands, install apps, view logs, and debug on connected devices.
This question belongs to: Computer Operating Systems
Question #2
What scheduling algorithm prioritizes processes based on their remaining computation requirements, preempting a running process if a shorter task enters the ready queue?
A. First-Come, First-Served (FCFS)
B. Shortest Remaining Time First (SRTF)
C. Round Robin (RR)
D. Static Priority Scheduling
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Correct Answer: Option B

Explanation:
Shortest Remaining Time First (SRTF) is a preemptive variant of SJF that continuously evaluates remaining runtime, switching to shorter newly arrived tasks.
This question belongs to: Computer Operating Systems
Question #3
Which Linux command is used to display the kernel version?
A. kernel -v
B. lsb_release -a
C. version
D. uname -r
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Correct Answer: Option D

Explanation:
uname -r shows the kernel release version; uname -a gives all system info.
This question belongs to: Computer Operating Systems
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