Which system state preserves open documents and applications to the hard drive or SSD, and then shuts down power completely? MCQ with Answer and Explanation

Question
Which system state preserves open documents and applications to the hard drive or SSD, and then shuts down power completely?
A. Sleep Mode
B. Hibernate Mode
C. Restart Mode
D. Log Off Mode
Answer: Option B
Solution (By JKSSB Mock Tests)
Hibernate mode saves current system state data directly onto the hard disk (hiberfil.sys) and powers off the machine completely, consuming zero electricity.
This question belongs to: Computer Operating Systems
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Practice More Operating Systems Questions

Question #1
What is the main role of the Android 'Dalvik/ART Virtual Machine'?
A. To execute Android applications (bytecode) on the device
B. To handle network connections
C. To provide user interface
D. To manage hardware resources
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Correct Answer: Option A

Explanation:
The virtual machine executes the DEX bytecode compiled from Java/Kotlin code, translating it to native instructions.
This question belongs to: Computer Operating Systems
Question #2
Which of the following describes cooperative multitasking?
A. The operating system forcibly stops tasks using timer interrupts.
B. Each running process must explicitly yield control to let other processes run.
C. Tasks are shared across multiple physical computers on a local area network.
D. Hardware automatically manages scheduling without any operating system code.
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Correct Answer: Option B

Explanation:
In cooperative multitasking, the operating system never forces a context switch; instead, processes must manually yield CPU execution time back to the system scheduler.
This question belongs to: Computer Operating Systems
Question #3
Which Linux command is used to display the currently running processes along with dynamic, real-time system resource usage?
A. grep
B. ls
C. top
D. ps
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Correct Answer: Option C

Explanation:
The 'top' command in Linux provides a dynamic, real-time view of the running tasks, CPU utilization, and memory consumption.
This question belongs to: Computer Operating Systems
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