Operating System MCQs in English | SET – 02
Introduction
Operating systems serve as the core foundation of modern computing, enabling computers to function effectively and efficiently. Proficiency in understanding operating system concepts is crucial for students, professionals, and enthusiasts alike. Let’s dive into these Operating System MCQs to enhance your knowledge.
Get ready to embrace the challenges, excel in your exams, and take your knowledge of operating systems to new heights. Good luck on your journey to success!
Here are 20 multiple-choice questions about Operating System MCQs in English | SET – 02 along with their answers and explanations:
Question 1: What is the primary function of an operating system?
a) Data storage and retrieval
b) File sharing and synchronization
c) Resource management and hardware abstraction
d) User interface customization
Answer: c) Resource management and hardware abstraction.
Explanation: Operating systems manage system resources such as CPU, memory, and devices. They also provide a layer of abstraction between hardware and software, allowing applications to run without concern for hardware-specific details.
Question 2: Which component of the operating system manages the execution of programs?
a) Memory Manager
b) File System
c) Kernel
d) Device Drivers
Answer: c) Kernel.
Explanation: The kernel is the core component of the operating system that manages the execution of processes, memory allocation, and device communication.
Question 3: What is virtual memory?
a) A memory management technique that allows RAM to be expanded virtually
b) A secondary storage used when RAM is full
c) A hardware component used for memory access
d) A memory module used in virtual machines
Answer: a) A memory management technique that allows RAM to be expanded virtually
Explanation: Virtual memory is a memory management technique that allows the operating system to use a portion of the hard disk as an extension of RAM when the physical RAM is full.
Question 4: Which scheduling algorithm assigns the CPU to the process with the shortest burst time?
a) First-Come-First-Serve (FCFS)
b) Round Robin
c) Shortest Job Next (SJN)
d) Priority Scheduling
Answer: c) Shortest Job Next (SJN).
Explanation: This scheduling algorithm assigns the CPU to the process with the shortest burst time, minimizing waiting time.
Question 5: What is the purpose of a semaphore in operating systems?
a) To synchronize access to shared resources
b) To manage virtual memory
c) To allocate disk space
d) To control CPU scheduling
Answer: a) To synchronize access to shared resources.
Explanation: A semaphore is a synchronization mechanism used to control access to shared resources and avoid conflicts in multi-threaded environments.
Question 6: Which file system is commonly used in Windows operating systems?
a) NTFS (New Technology File System)
b) HFS+ (Hierarchical File System Plus)
c) ext4 (Fourth Extended File System)
d) FAT32 (File Allocation Table 32)
Answer: a) NTFS (New Technology File System)
Explanation: NTFS is the default file system used in modern Windows operating systems, offering features like file encryption, compression, and support for large storage devices.
Question 7: What is the main advantage of multi-programming operating systems?
a) Increased throughput
b) Enhanced security
c) Real-time processing
d) Simplified user interface
Answer: a) Increased throughput.
Explanation: Multi-programming operating systems allow multiple programs to be executed simultaneously, maximizing CPU utilization and overall system throughput.
Question 8: Which type of operating system allows multiple users to access the system concurrently?
a) Single-User OS
b) Multi-User OS
c) Batch Processing OS
d) Time-Sharing OS
Answer: b) Multi-User OS.
Explanation: Multi-user operating systems allow multiple users to access the system concurrently, making them suitable for shared computing environments.
Question 9: What is the primary function of the BIOS in a computer system?
a) Managing peripheral devices
b) Loading the operating system into memory
c) Handling user authentication
d) Performing file management tasks
Answer: b) Loading the operating system into memory.
Explanation: The BIOS (Basic Input/Output System) initializes hardware components and loads the operating system into memory during the boot process.
Question 10: What is the purpose of a device driver in the operating system?
a) To provide a user interface for the operating system
b) To manage peripheral devices and facilitate communication
c) To optimize CPU scheduling
d) To handle memory allocation
Answer: b) To manage peripheral devices and facilitate communication.
Explanation: Device drivers enable the operating system to interact with hardware devices, allowing data transfer and device management.
Question 11: Which of the following is not an operating system?
a) Windows
b) Linux
c) Photoshop
d) macOS
Answer: c) Photoshop
Explanation: Photoshop is an image editing software, not an operating system.
Question 12: What does the acronym “OS” stand for?
a) Optical System
b) Operating System
c) Output System
d) Online Service
Answer: b) Operating System
Explanation: The acronym “OS” stands for Operating System, which is the software that manages computer hardware and software resources.
Question 13: Which operating system is open-source?
a) Windows
b) macOS
c) Linux
d) iOS
Answer: c) Linux
Explanation: Linux is an open-source operating system, which means its source code is freely available for anyone to view, modify, and distribute.
Question 14: Which operating system is primarily used on Apple Mac computers?
a) Windows
b) Linux
c) macOS
d) Android
Answer: c) macOS
Explanation: macOS is the operating system developed by Apple Inc. and is used on their Macintosh computers.
Question 15: Which operating system is used on the majority of smartphones?
a) Windows
b) Linux
c) iOS
d) Android
Answer: d) Android
Explanation: Android is the most commonly used operating system for smartphones, developed by Google.
Question 16: Which of the following is a multi-user operating system?
a) Windows
b) macOS
c) Linux
d) Android
Answer: c) Linux
Explanation: Linux is a multi-user operating system that allows multiple users to interact with the system simultaneously.
Question 17: Which operating system is known for its command-line interface?
a) Windows
b) macOS
c) Linux
d) iOS
Answer: c) Linux
Explanation: Linux is known for its command-line interface, which allows users to interact with the system using text commands.
Question 18: What is the purpose of a device driver in an operating system?
a) To manage files and folders
b) To provide a user interface
c) To control hardware devices
d) To run applications
Answer: c) To control hardware devices
Explanation: Device drivers are software components that allow the operating system to communicate and control hardware devices such as printers, scanners, and network cards.
Question 19: Which operating system is the most widely used for web servers?
a) Windows Server
b) macOS Server
c) Linux
d) Unix
Answer: c) Linux
Explanation: Linux is the most widely used operating system for web servers due to its stability, security, and open-source nature.
Question 20: Which operating system is not designed for personal computers?
a) Windows
b) macOS
c) Linux
d) iOS
Answer: d) iOS
Explanation: iOS is the operating system developed by Apple Inc. specifically for their mobile devices such as iPhones and iPads, not for personal computers.
Conclusion:
Congratulations on completing the 20 Operating System MCQs with answers and detailed explanations. We hope this comprehensive guide has enriched your knowledge and prepared you to tackle OS-related assessments with confidence. Keep practicing, exploring, and mastering operating system concepts to excel in your academic and professional journey.
Remember, success comes from dedication, practice, and continuous learning. Stay curious, stay determined, and embrace the challenges ahead. Happy learning! I hope these questions and explanations help you understand more about operating systems!