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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: specifies which users or groups have particular permissions on an object?
A. Access control list
B. Disk Management
C. Permission
D. dir
Read Theory
Correct Answer: A
Access control list: specifies which users or groups have particular permissions on an object.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: defines an allowed action on a resource, such as read, write, or execute?
A. mv
B. Permission
C. Clipboard
D. Encryption
Read Theory
Correct Answer: B
Permission: defines an allowed action on a resource, such as read, write, or execute.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: has more limited privileges to reduce accidental or unauthorized system changes?
A. Operating system
B. system call
C. Standard user
D. Aging
Read Theory
Correct Answer: C
Standard user: has more limited privileges to reduce accidental or unauthorized system changes.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: has elevated privileges for system-wide configuration and management?
A. Start menu
B. Administrator account
C. UEFI
D. Sleep
Read Theory
Correct Answer: B
Administrator account: has elevated privileges for system-wide configuration and management.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: represents an identity used to sign in and access system resources?
A. Deadlock
B. Access control list
C. User account
D. Preemptive scheduling
Read Theory
Correct Answer: C
User account: represents an identity used to sign in and access system resources.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: starts an operating system with a reduced set of drivers and services for troubleshooting?
A. Firewall
B. ls
C. Safe Mode
D. Context switch
Read Theory
Correct Answer: C
Safe Mode: starts an operating system with a reduced set of drivers and services for troubleshooting.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: is modern firmware that initializes hardware and launches a bootloader using standardized interfaces?
A. UEFI
B. Kernel
C. Batch processing
D. Operating system
Read Theory
Correct Answer: A
UEFI: is modern firmware that initializes hardware and launches a bootloader using standardized interfaces.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: checks key hardware during system startup before the OS loads?
A. Path
B. TRIM
C. CLI
D. POST
Read Theory
Correct Answer: D
POST: checks key hardware during system startup before the OS loads.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: loads an operating-system kernel or another boot stage?
A. Bootloader
B. Aging
C. Defragmentation
D. Main memory management
Read Theory
Correct Answer: A
Bootloader: loads an operating-system kernel or another boot stage.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: starts the computer and loads the operating system into memory?
A. Restart
B. PowerShell
C. Booting
D. Main memory management
Read Theory
Correct Answer: C
Booting: starts the computer and loads the operating system into memory.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: allows hardware devices to transfer data to or from memory with limited CPU intervention?
A. NTFS
B. DMA
C. Encryption
D. Kernel mode
Read Theory
Correct Answer: B
DMA: allows hardware devices to transfer data to or from memory with limited CPU intervention.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: is a signal that causes the processor to suspend current execution and service an event?
A. Interrupt
B. Shell
C. Encryption
D. Window
Read Theory
Correct Answer: A
Interrupt: is a signal that causes the processor to suspend current execution and service an event.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: queues jobs for a slower shared device such as a printer?
A. Segmentation
B. Spooling
C. Task Manager
D. Journaling
Read Theory
Correct Answer: B
Spooling: queues jobs for a slower shared device such as a printer.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: automates detection and configuration of compatible hardware?
A. cp
B. Administrator account
C. Shell
D. Plug and Play
Read Theory
Correct Answer: D
Plug and Play: automates detection and configuration of compatible hardware.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: allows the operating system to communicate with a specific hardware device?
A. Device driver
B. Restore
C. Mobile OS
D. POST
Read Theory
Correct Answer: A
Device driver: allows the operating system to communicate with a specific hardware device.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: makes a filesystem accessible at a location in the operating system's directory tree?
A. Restore
B. Registry
C. system call
D. Mounting
Read Theory
Correct Answer: D
Mounting: makes a filesystem accessible at a location in the operating system's directory tree.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: records filesystem changes in a journal to improve recovery after crashes?
A. Starvation
B. FAT32
C. Journaling
D. Real-time operating system
Read Theory
Correct Answer: C
Journaling: records filesystem changes in a journal to improve recovery after crashes.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: is a widely used journaling file system on Linux systems?
A. Booting
B. mv
C. Interrupt
D. ext4
Read Theory
Correct Answer: D
ext4: is a widely used journaling file system on Linux systems.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: is a file system designed for flash storage and cross-platform removable-media use?
A. Registry
B. exFAT
C. Authorization
D. DMA
Read Theory
Correct Answer: B
exFAT: is a file system designed for flash storage and cross-platform removable-media use.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: is an older broadly compatible file system with a 4 GiB maximum individual file size?
A. copy
B. Page fault
C. FAT32
D. User account
Read Theory
Correct Answer: C
FAT32: is an older broadly compatible file system with a 4 GiB maximum individual file size.
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