In Windows Operating Systems, which system tool is explicitly used to optimize disk space by rearranging fragmented files into contiguous sectors? MCQ with Answer and Explanation

Question
In Windows Operating Systems, which system tool is explicitly used to optimize disk space by rearranging fragmented files into contiguous sectors?
A. Disk Defragmenter and Optimize Drives
B. Disk Cleanup
C. Task Manager
D. Chkdsk
Answer: Option A
Solution (By JKSSB Mock Tests)
Disk Defragmenter consolidates fragmented files on a hard drive to improve read/write access speeds and overall system performance.
This question belongs to: Computer Operating Systems
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Practice More Operating Systems Questions

Question #1
What happens when a computer enters 'Sleep Mode' in Windows?
A. The computer saves state to the hard drive and shuts down power 100%.
B. The computer places its active operational state into RAM and switches to a low-power state, keeping RAM powered.
C. The OS reformats the system volume completely.
D. The system logs out all users and runs a deep virus scan.
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Correct Answer: Option B

Explanation:
Sleep mode places the computer into a minimal power state, preserving all running applications and documents directly inside active RAM memory for near-instant resume times.
This question belongs to: Computer Operating Systems
Question #2
Which Linux command is used to display the current system load average?
A. top
B. All of the above
C. w
D. uptime
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Correct Answer: Option B

Explanation:
uptime, w, and top all show load averages; top provides additional process information.
This question belongs to: Computer Operating Systems
Question #3
Which of the following is a non-preemptive CPU scheduling algorithm?
A. First-Come, First-Served (FCFS)
B. Preemptive Priority
C. Round Robin
D. Shortest Remaining Time First
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Correct Answer: Option A

Explanation:
First-Come, First-Served is strictly non-preemptive; once a process obtains CPU execution rights, it keeps the processor until it terminates or blocks for input/output.
This question belongs to: Computer Operating Systems
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