What mechanism allows a user to interact with an operating system through a sequential text-entry environment instead of graphical elements? MCQ with Answer and Explanation

Question

What mechanism allows a user to interact with an operating system through a sequential text-entry environment instead of graphical elements?

A. Command Line Interface (CLI)

B. Graphical User Interface (GUI)

C. Touch Interface

D. Virtual Reality Interface (VRI)

Answer: Option A

Solution (By JKSSB Mock Tests)

A Command Line Interface (CLI) relies strictly on text commands entered via a terminal shell to execute applications and configure parameters.

This question belongs to: Computer Operating Systems

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Question #1

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In a symmetric multiprocessing (SMP) system, how are the processing responsibilities shared among available CPUs?

A. All processors share the same physical memory space and run tasks simultaneously under equal peer status.

B. One primary CPU controls all other slave CPUs and handles all hardware input/output exclusively.

C. Only one processor can be active at any given minute while others stay idle.

D. Processors are restricted to executing only application software, never OS tasks.

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Correct Answer: Option A

Explanation:
In Symmetric Multiprocessing (SMP), multiple peer processors share a common main memory and execute threads concurrently under equal standing.

This question belongs to: Computer Operating Systems

Question #2

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Which of the following is a file system specifically designed for flash storage, used in many Android devices?

A. F2FS

B. NTFS

C. FAT32

D. ext4

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Correct Answer: Option A

Explanation:
F2FS (Flash-Friendly File System) is optimized for NAND flash memory, improving performance and longevity on SSDs and SD cards.

This question belongs to: Computer Operating Systems

Question #3

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Which mechanism allows an operating system to simulate more memory than the computer physically contains by transferring data temporarily to secondary storage?

A. Read-Only Memory

B. Dynamic RAM

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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