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Operating Systems MCQs with Answers & Key Concepts MCQs

Operating Systems covers the basic concepts, functions and types of operating systems, including Windows, Linux, Unix, macOS, Android and real-time systems. It includes process management, memory management, file systems, scheduling, security, device management, commands and system software concepts. This topic is useful for Computer & IT preparation in CSS, PMS, PPSC, FPSC and other competitive exams through exam-focused MCQs and explanations.

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Operating Systems MCQs with Answers & Key Concepts

Operating Systems MCQs with Answers & Key Concepts MCQs With Answers

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CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: a stored set of instructions that can be executed?
A. Program
B. Multithreading
C. Directory
D. Single-user OS
Read Theory
Correct Answer: A
Program: a stored set of instructions that can be executed.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: a program that is currently executing?
A. Embedded OS
B. Process
C. Restart
D. Desktop OS
Read Theory
Correct Answer: B
Process: a program that is currently executing.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: a text-based interface in which users type commands?
A. PowerShell
B. Safe Mode
C. POST
D. CLI
Read Theory
Correct Answer: D
CLI: a text-based interface in which users type commands.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: a user interface based on graphical elements such as windows, icons, menus, and pointers?
A. GUI
B. Priority scheduling
C. Multithreading
D. Scheduler
Read Theory
Correct Answer: A
GUI: a user interface based on graphical elements such as windows, icons, menus, and pointers.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: a user interface that interprets commands and launches programs?
A. Registry
B. Semaphore
C. Booting
D. Shell
Read Theory
Correct Answer: D
Shell: a user interface that interprets commands and launches programs.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: the core part of an operating system that manages CPU, memory, devices, and low-level services?
A. Booting
B. Kernel
C. ext4
D. Swap space
Read Theory
Correct Answer: B
Kernel: the core part of an operating system that manages CPU, memory, devices, and low-level services.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
The main role of an operating system is to:
A. Manage computer hardware and software resources
B. Write exam questions only
C. Increase internet bill
D. Print without a printer
Read Theory
Correct Answer: A
A: Correct because an operating system manages hardware, software, files, memory, and processes. B: Wrong because exam writing is an application-level task. C: Wrong because billing is unrelated to OS function. D: Wrong because printing needs printing hardware or services.
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