What is the core purpose of a device driver in an operating system? MCQ with Answer and Explanation

Question
What is the core purpose of a device driver in an operating system?
A. To act as a translator enabling communication between the operating system and specific hardware peripherals.
B. To optimize the layout of database structures in permanent storage.
C. To provide internet connection capabilities to the web browser software.
D. To scan user applications for viruses and security issues.
Answer: Option A
Solution (By JKSSB Mock Tests)
Device drivers are specialized programs that enable the Operating System to communicate effectively with external hardware components and peripherals.
This question belongs to: Computer Operating Systems
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Practice More Operating Systems Questions

Question #1
Which Linux command is used to change the group ownership of a file?
A. groupmod
B. chgrp
C. chmod
D. chown
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Correct Answer: Option B

Explanation:
chgrp changes the group ownership of a file or directory; chown can change both owner and group.
This question belongs to: Computer Operating Systems
Question #2
What is the primary advantage of a distributed operating system?
A. It has better graphics
B. It requires less memory
C. It is easier to manage than a single system
D. It allows multiple computers to work together as a single system, providing scalability and fault tolerance
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Correct Answer: Option D

Explanation:
Distributed OS manages resources across network nodes, offering high availability and load balancing.
This question belongs to: Computer Operating Systems
Question #3
Which mechanism allows an operating system to simulate more memory than the computer physically contains by transferring data temporarily to secondary storage?
A. Dynamic RAM
B. Read-Only Memory
C. Virtual Memory
D. Cache Memory
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Correct Answer: Option C

Explanation:
Virtual memory combines physical RAM with temporary space on the hard drive (paging/swap file) to let the system handle larger memory loads than physical RAM capacity allows.
This question belongs to: Computer Operating Systems
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