Which of the following is a characteristic of a microkernel? MCQ with Answer and Explanation

Question
Which of the following is a characteristic of a microkernel?
A. It is faster than monolithic
B. It is less modular than monolithic
C. All services are in kernel space
D. Only essential services like IPC and memory management are in kernel space
Answer: Option D
Solution (By JKSSB Mock Tests)
Microkernel keeps only minimal services in kernel mode, with drivers and file systems in user space, increasing modularity.
This question belongs to: Computer Operating Systems
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Question #1
Which of the following is a characteristic of a monolithic kernel?
A. All OS services run in kernel mode with high performance
B. It is easier to extend
C. Only the core services run in kernel mode, others in user mode
D. It is more stable than microkernel
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Correct Answer: Option A

Explanation:
Monolithic kernel includes all system services (file system, drivers, memory management) in kernel space, which can improve performance but reduce stability.
This question belongs to: Computer Operating Systems
Question #2
Which of the following is a type of operating system that can run on multiple hardware platforms without modification?
A. Platform-independent OS
B. All of the above
C. Cross-platform OS
D. Portable OS
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Correct Answer: Option B

Explanation:
These terms refer to OSes that are designed to run on different CPU architectures with minimal changes, e.g., Linux.
This question belongs to: Computer Operating Systems
Question #3
Which Linux command is used to mount a file system at boot?
A. All of the above
B. systemctl mount
C. Entries in /etc/fstab
D. mount -a
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Correct Answer: Option A

Explanation:
/etc/fstab defines mount points; mount -a mounts all entries in fstab; systemd can also handle mount units.
This question belongs to: Computer Operating Systems
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