Operating System MCQs

Are you studying operating systems and need a comprehensive resource?

You’re in luck! We offer over 700 carefully selected MCQs covering all the key topics in operating systems. Whether you’re prepping for exams, gearing up for interviews, or just looking to boost your knowledge, our extensive question bank is here to help you succeed.

Why Choose Our Operating Systems MCQs?

Our MCQs cover everything from fundamental concepts like process management and memory management to advanced topics like file systems and system security. Each question is designed to challenge your understanding and ensure you’re ready for any academic or professional challenge.

Perfect for Students and Professionals

This collection is tailored for anyone studying or working with operating systems, making it a fantastic resource for students, researchers, and professionals alike. The questions match up with common curricula and real-world scenarios, so you’re always on the right track.

Syllabus Overview

Unit I: Introduction and Memory Management

• Introduction: What is an Operating System?
• Operating System Types: Batch, Multi-programmed Batch, Time-Sharing, Personal Computer, Parallel, Distributed, Real-Time
• Memory Management: Background, Logical vs. Physical Address Space, Swapping
• Memory Allocation: Contiguous Allocation, Paging, Segmentation
• Virtual Memory: Demand Paging, Page Replacement, Algorithms, Performance
• Frame Allocation: Thrashing, Other Considerations

Unit II: Processes and Process Synchronization

• Processes: Concept, Scheduling, Operations
• CPU Scheduling: Basic Concepts, Criteria, Algorithms, Multi-Processor Scheduling
• Process Synchronization: Background, Critical-Section Problem, Hardware
• Synchronization Techniques: Semaphores, Classical Problems

Unit III: Deadlocks

• Deadlocks: System Model, Characterization, Handling Methods
• Deadlock Prevention, Avoidance, Detection, Recovery

Unit IV: Device Management and Storage

• Device Management Techniques: Dedicated, Shared, Virtual Devices
• Input/Output Devices, Storage Devices
• Buffering, Secondary Storage Structure
• Disk Structure, Scheduling, Management, Swap-Space Management, Reliability

Unit V: Information Management and File Systems

• Introduction, A Simple File System
• General File System Model, Symbolic File System
• Basic File System: Access Control, Logical and Physical Systems
• File System Concepts: Interface, Access Methods, Directory Structure, Protection, Consistency
• File System Implementation: Structure, Allocation Methods, Free-Space Management

Question: 1

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Operating systems can be updated to:

1. Change the computers brand
2. Fix security vulnerabilities
3. Improve software compatibility (solely)
4. Alter the computers physical appearance

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Correct Answer: B. Fix security vulnerabilities

Explanation: Operating system updates often address security vulnerabilities, improve system stability, and introduce new features. While compatibility and performance might be enhanced, these are not the sole purposes of updates. Options A and D are not functionalities of updates.

Question: 2

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Modern operating systems often provide a(n) _______ to simplify user interaction.

1. Complex programming language
2. Graphical User Interface (GUI)
3. Direct hardware access mode
4. Limited set of pre-installed applications

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Correct Answer: B. Graphical User Interface (GUI)

Explanation: A GUI offers a visual interface with icons, menus, and windows, making it easier for users to interact with the computer and its functionalities. Options A, C, and D are not user-friendly approaches.

Question: 3

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Which of the following is NOT a core function of an operating system?

1. Memory management
2. Process scheduling
3. Data encryption
4. Web browsing

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Correct Answer: D. Web browsing

Explanation: Web browsing is the functionality of a web browser application, not a core function of the operating system itself. The operating system manages memory allocation, schedules processes for CPU usage, and oversees various tasks. Data encryption might be a service provided by the operating system or other security software.

Question: 4

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A key benefit of using an operating system is:

1. Limited software compatibility
2. Improved hardware performance (directly)
3. Standardized platform for applications
4. Prevents unauthorized access (solely)

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Correct Answer: C. Standardized platform for applications

Explanation: An operating system provides a consistent environment for applications to run, regardless of the underlying hardware variations. This allows developers to design software for a specific operating system, ensuring compatibility and functionality. While security and performance can be influenced by an operating system, these are not the primary benefits.

Question: 5

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Some popular operating systems for mobile devices include:

1. Microsoft Office
2. Android, iOS
3. Web browsers
4. Cloud storage services

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Correct Answer: B. Android, iOS

Explanation: Android and iOS are dominant operating systems specifically designed for mobile devices. While Microsoft Office can be used on mobile devices, it's not an operating system. Option C refers to software used to access the internet, and option D deals with data storage, not core functionalities.

Question: 6

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Operating systems are classified into different types based on:

1. Color scheme
2. Number of users
3. Processing power
4. Underlying architecture and functionality

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Correct Answer: D. Underlying architecture and functionality

Explanation: Operating systems are categorized based on their design, architecture, and functionalities. Examples include single-user, multi-user, real-time, and batch processing systems. Options A, B, and C are not primary factors for classification.

Question: 7

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An operating system is essential for a computer because it:

1. Increases processing speed
2. Provides access to specific features
3. Allows for physical modifications
4. Enables communication with other computers

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Correct Answer: B. Provides access to specific features

Explanation: The operating system provides the foundation for running other programs and utilizing various hardware components. While it can indirectly influence communication and processing speed, its primary role is to manage resources and offer functionalities.

Question: 8

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Which of the following is NOT a common example of an operating system?

1. Microsoft Windows
2. Apple iOS
3. Microsoft Word
4. Linux

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Correct Answer: C. Microsoft Word

Explanation: Microsoft Word is a word processing application, while the others are all widely used operating systems.

Question: 9

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An operating system provides a(n) _______ between the user and the computer hardware.

1. Physical connection
2. User interface
3. Power source
4. Decorative theme

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Correct Answer: B. User interface

Explanation: The operating system offers a user interface (UI) like a graphical desktop or a command line that allows users to interact with the computer and its resources. Options A, C, and D are not functionalities of a user interface.

Question: 10

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What is the primary function of an operating system?

1. To create documents
2. To browse the internet
3. To manage computer hardware and software resources
4. To play video games

Click to see the answer

Correct Answer: C. To manage computer hardware and software resources

Explanation: An operating system acts as an intermediary between the user and the computer's hardware. It manages resources like memory, storage, processors, and peripherals, and provides a platform for running other software applications. While options A, B, and D are functionalities that can be achieved using applications, managing resources is the core role of an operating system.

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