Which Linux command is used to mount a file system at boot? MCQ with Answer and Explanation

Which Linux command is used to mount a file system at boot?
A. systemctl mount
B. All of the above
C. mount -a
D. Entries in /etc/fstab
Answer: Option B
Solution (By JKSSB Mock Tests)
/etc/fstab defines mount points; mount -a mounts all entries in fstab; systemd can also handle mount units.

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Practice More Operating Systems Questions

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What technique is used by operating systems to handle input/output operations for slow devices like printers by temporarily storing data in an isolated disk queue?
A. Paging
B. Caching
C. Threading
D. Spooling

Correct Answer: Option D


Explanation:
Spooling manages high-volume document outputs by queuing files on secondary storage until the slower output device (like a printer) is ready to process them.

This question belongs to: Computer Operating Systems
Question #2
Which component of an operating system is responsible for managing the allocation and deallocation of main memory blocks to active applications?
A. File System Manager
B. Memory Manager
C. I/O Spooler
D. Process Scheduler

Correct Answer: Option B


Explanation:
The memory management subsystem tracks memory allocation status, allocating chunks to active processes and reclaiming them upon task completion.

This question belongs to: Computer Operating Systems
Question #3
Which Android subsystem handles layout asset rendering and combines diverse display surfaces onto the final hardware screen output?
A. Activity Coordinator
B. Zygote Prototype
C. SurfaceFlinger Engine
D. Package Manager

Correct Answer: Option C


Explanation:
SurfaceFlinger functions as the system graphics compositor, merging various application display buffers into a single image to be rendered.

This question belongs to: Computer Operating Systems