Which fundamental principle is used by an operating system to prevent user applications from directly overwriting or damaging crucial system code? MCQ with Answer and Explanation

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Which fundamental principle is used by an operating system to prevent user applications from directly overwriting or damaging crucial system code?

A. Disk Defragmentation

B. Spooler Buffering

C. Dynamic Link Libraries

D. Dual-Mode Operation (User Mode vs. Kernel Mode)

Answer: Option D

Solution (By JKExamLibrary)

Dual-mode operation provides hardware-level protection by separating execution into restricted User Mode (for user apps) and privileged Kernel Mode (for the OS kernel).

This question belongs to: Computer Operating Systems

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Practice More Operating Systems Questions

Question #1 Report Error

Which of the following is a file system used by macOS?

A. APFS

B. ext4

C. NTFS

D. FAT32

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Correct Answer: Option A

Explanation:
APFS (Apple File System) is the default on macOS; others are not native.

This question belongs to: Computer Operating Systems

Question #2 Report Error

Which Windows utility allows an administrator to schedule a task or script to execute automatically at specific times or after certain events?

A. Registry Editor

B. System Properties

C. Task Manager

D. Task Scheduler

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Correct Answer: Option D

Explanation:
Windows Task Scheduler is a built-in tool that lets users and administrative accounts schedule automated routines to execute on specific dates/times.

This question belongs to: Computer Operating Systems