What is the function of the Windows Page File (pagefile.sys)? MCQ with Answer and Explanation

Question
What is the function of the Windows Page File (pagefile.sys)?
A. It stores system crash dumps
B. It caches frequently used files
C. It acts as virtual memory (swap file)
D. It is used for hibernation
Answer: Option C
Solution (By JKSSB Mock Tests)
The pagefile.sys is a system file that serves as additional RAM (virtual memory) by swapping data to disk.
This question belongs to: Computer Operating Systems
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Question #1
In an operating system, what is the primary role of the 'Short-Term Scheduler'?
A. To back up system configuration files to the cloud.
B. To select which process should be brought from secondary storage into the main memory.
C. To switch between light and dark visual themes.
D. To select from among the processes in the ready queue and allocate the CPU to one of them.
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Correct Answer: Option D

Explanation:
The short-term scheduler (or CPU scheduler) picks which process from the ready queue gets executed by the CPU next.
This question belongs to: Computer Operating Systems
Question #2
Which of the following is an example of a desktop environment for Linux?
A. Windows Shell
B. Unity
C. GNOME
D. Aqua
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Correct Answer: Option C

Explanation:
GNOME is a popular desktop environment for Linux; Unity was used by Ubuntu earlier, but GNOME is common.
This question belongs to: Computer Operating Systems
Question #3
In Android, what is the name of the application framework that allows apps to interact with system services?
A. Dalvik Virtual Machine
B. Android Framework
C. Linux Kernel
D. ART (Android Runtime)
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Correct Answer: Option B

Explanation:
The Android Framework provides APIs for apps to access system services like location, sensors, and notifications.
This question belongs to: Computer Operating Systems
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