What is the kernel of an operating system? MCQ with Answer and Explanation

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What is the kernel of an operating system?

A. The graphical user interface

B. The bootloader

C. A set of system utilities

D. The core component that manages hardware and system resources

Answer: Option D

Solution (By JKSSB Mock Tests)

The kernel is the central part of an OS, responsible for memory management, process scheduling, and hardware communication.

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Question #1

Which of the following is a type of operating system that can run on multiple hardware platforms without modification?

A. All of the above

B. Platform-independent OS

C. Cross-platform OS

D. Portable OS

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Correct Answer: Option A

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 #2

Which Linux terminal command can be used to monitor real-time file updates, frequently used to watch system log additions dynamically?

A. cat

B. head

C. tail -f

D. less

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Correct Answer: Option C

Explanation:
The 'tail' command with the '-f' (follow) option keeps the text stream open, printing new lines to the terminal screen as they are written to the log file.

This question belongs to: Computer Operating Systems

Question #3

What is the purpose of the Android 'LocationManager'?

A. To manage maps

B. To obtain the device's geographic location and handle location updates

C. To provide GPS coordinates only

D. To track user movement

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Correct Answer: Option B

Explanation:
LocationManager provides access to GPS, network, and fused location providers, and registers for location updates.

This question belongs to: Computer Operating Systems

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