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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: cycles through ready tasks using a time quantum?
A. Interrupt
B. Round-robin scheduling
C. Thread
D. POST
Read Theory
Correct Answer: B
Round-robin scheduling: cycles through ready tasks using a time quantum.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: allows the OS to interrupt a running task and give the CPU to another?
A. Preemptive scheduling
B. File extension
C. Blocked/Waiting state
D. FCFS scheduling
Read Theory
Correct Answer: A
Preemptive scheduling: allows the OS to interrupt a running task and give the CPU to another.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: saves the state of one running task and restores another task's state?
A. Context switch
B. Safe Mode
C. pwd
D. UAC
Read Theory
Correct Answer: A
Context switch: saves the state of one running task and restores another task's state.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: means a process cannot continue until an event or resource becomes available?
A. Scheduler
B. File
C. Blocked/Waiting state
D. Path
Read Theory
Correct Answer: C
Blocked/Waiting state: means a process cannot continue until an event or resource becomes available.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: means a process is currently executing on a CPU?
A. Running state
B. TRIM
C. Shell
D. Segmentation
Read Theory
Correct Answer: A
Running state: means a process is currently executing on a CPU.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: means a process is prepared to run and waiting for CPU time?
A. Ready state
B. mv
C. PowerShell
D. File system
Read Theory
Correct Answer: A
Ready state: means a process is prepared to run and waiting for CPU time.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: selects which ready process or thread receives CPU time?
A. Thread
B. rmdir
C. Scheduler
D. NTFS
Read Theory
Correct Answer: C
Scheduler: selects which ready process or thread receives CPU time.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: is optimized to provide network services, multiuser access, and centralized resource management?
A. Server OS
B. Ready state
C. Disk Management
D. Device driver
Read Theory
Correct Answer: A
Server OS: is optimized to provide network services, multiuser access, and centralized resource management.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: is designed primarily for personal computers and interactive end users?
A. Desktop OS
B. Scheduler
C. Access control list
D. Priority scheduling
Read Theory
Correct Answer: A
Desktop OS: is designed primarily for personal computers and interactive end users.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: is designed for smartphones, tablets, and other mobile devices?
A. exFAT
B. Device Manager
C. Restart
D. Mobile OS
Read Theory
Correct Answer: D
Mobile OS: is designed for smartphones, tablets, and other mobile devices.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: is designed for dedicated devices with specific functions and constrained resources?
A. Embedded OS
B. Journaling
C. Swap space
D. ext4
Read Theory
Correct Answer: A
Embedded OS: is designed for dedicated devices with specific functions and constrained resources.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: allows multiple users to access system resources concurrently?
A. Mobile OS
B. Multiuser OS
C. Clipboard
D. Page replacement
Read Theory
Correct Answer: B
Multiuser OS: allows multiple users to access system resources concurrently.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: is designed primarily for one user at a time?
A. Multitasking
B. dir
C. Single-user OS
D. Page replacement
Read Theory
Correct Answer: C
Single-user OS: is designed primarily for one user at a time.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: is designed to respond to events within predictable timing constraints?
A. Real-time operating system
B. Command Prompt
C. Journaling
D. mkdir
Read Theory
Correct Answer: A
Real-time operating system: is designed to respond to events within predictable timing constraints.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: executes queued jobs with little or no interactive user intervention?
A. GUI
B. Path
C. Batch processing
D. Antivirus
Read Theory
Correct Answer: C
Batch processing: executes queued jobs with little or no interactive user intervention.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: shares CPU time among interactive users or processes using short time slices?
A. PowerShell
B. File extension
C. Time sharing
D. Shutdown
Read Theory
Correct Answer: C
Time sharing: shares CPU time among interactive users or processes using short time slices.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: allows a process to contain multiple threads of execution?
A. Multithreading
B. File extension
C. rmdir
D. Safe Mode
Read Theory
Correct Answer: A
Multithreading: allows a process to contain multiple threads of execution.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: uses two or more processing units or cores to execute work?
A. cp
B. Recycle Bin
C. Multiprocessing
D. Restore point
Read Theory
Correct Answer: C
Multiprocessing: uses two or more processing units or cores to execute work.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: allows multiple programs/processes to make progress during the same period?
A. Preemptive scheduling
B. Restore point
C. Virtual memory
D. Multitasking
Read Theory
Correct Answer: D
Multitasking: allows multiple programs/processes to make progress during the same period.
CSS - PMS - CCE - PCS - Basic Computing Operating Systems
Which operating-system term best matches this description: a schedulable sequence of execution within a process?
A. system call
B. Thread
C. Safe Mode
D. Multithreading
Read Theory
Correct Answer: B
Thread: a schedulable sequence of execution within a process.
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