Operating System MCQ with Answers

Are you preparing for an operating system interview or simply looking to test your knowledge of operating systems? Well, you’re in luck! In this blog post, we will cover the top 20 multiple-choice questions (MCQs) on operating systems (Operating System MCQ with Answer) along with their answers. So, let’s dive in and test your understanding of this critical area of computer science!

Operating System MCQ with Answers

Question 1. What is an operating system?

1.  Software that manages computer hardware and software resources
   
2. A collection of computer programs that perform specific tasks
   
3. A type of computer hardware
   
4. A programming language
   

Answer: a) Software that manages computer hardware and software resources

 

Question 2. What is the primary function of an operating system?

1. To provide a user interface for interacting with the computer
   
2. To manage hardware resources like CPU, memory, and I/O devices
   
3. To provide data storage and retrieval services
   
4. To compile and execute programs
   

Answer: b) To manage hardware resources like CPU, memory, and I/O devices

 

Question 3. Which of the following is not an example of an operating system?

1. Windows
   
2. MacOS
   
3. Microsoft Office
   
4. Linux
   

Answer: c) Microsoft Office

 

Question 4. Which scheduling algorithm gives each process an equal amount of time to execute?

1. First-Come, First-Served (FCFS)
   
2. Round Robin
   
3. Priority Scheduling
   
4. Shortest Job Next (SJN)
   

Answer: b) Round Robin

 

Question 5. What is the purpose of virtual memory in an operating system?

1. To provide additional storage space for user files
   
2. To store frequently used files for faster access
   
3. To enable multiple processes to share the same physical memory
   
4. To provide a backup of system files
   

Answer: c) To enable multiple processes to share the same physical memory

 

Question 6. Which file system is used in Windows operating systems?

1.  NTFS
   
2. HFS+
   
3. Ext4
   
4. FAT32
   

Answer: a) NTFS

 

Question 7. What is the role of a device driver in an operating system?

1. To manage the execution of processes
   
2. To provide an interface for users to interact with the computer
   
3. To manage system resources like CPU and memory
   
4. To enable communication between the operating system and hardware devices
   

Answer: d) To enable communication between the operating system and hardware devices

 

Question 8. Which of the following is an example of a real-time operating system?

1. Windows
   
2. Linux
   
3. MacOS
   
4. VxWorks
   

Answer: d) VxWorks

 

Question 9. What is the purpose of a system call in an operating system?

1. To execute a user program
   
2. To allocate memory to a process
   
3. To provide services to user programs
   
4. To terminate a process
   

Answer: c) To provide services to user programs

 

Question 10. What is the main advantage of multi-threading in an operating system?

1.  Faster execution of programs
   
2. Better memory management
   
3. Improved process synchronization
   
4. Enhanced user interface
   

Answer: a) Faster execution of programs

 

Operating System MCQ with Answers

Question 11. Which of the following is an example of a non-volatile storage device?

1. RAM
   
2. Cache
   
3. Hard disk
   
4. CPU
   

Answer: c) Hard disk

 

Question 12. What is the function of a page table in a virtual memory system?

1. To store the contents of all pages in main memory
   
2. To translate virtual addresses to physical addresses
   
3. To allocate memory to processes
   
4. To manage system processes
   

Answer: b) To translate virtual addresses to physical addresses

 

Question 13. Which scheduling algorithm selects the process with the smallest burst time first?

1. Shortest Job Next (SJN)
   
2. First-Come, First-Served (FCFS)
   
3. Priority Scheduling
   
4. Round Robin
   

Answer: a) Shortest Job Next (SJN)

Question 14. What is the purpose of a bootloader in an operating system?

1. To load the operating system into memory during system startup
   
2. To manage the user interface of the operating system
   
3. To allocate system resources to processes
   
4. To schedule processes for execution
   

Answer: a) To load the operating system into memory during system startup

 

Question 15. Which of the following is not a type of process state in an operating system?

1. Running
   
2. Ready
   
3. Terminated
   
4.  Suspended
   

Answer: c) Terminated

 

Question 16. What is the role of a cache in an operating system?

1. To store frequently used files for faster access
   
2. To provide a backup of system files
   
3. To allocate memory to processes
   
4. To manage the user interface of the operating system
   

Answer: a) To store frequently used files for faster access

 

Question 17. What is the purpose of an interrupt in an operating system?

1. To terminate a process
   
2. To allocate memory to a process
   
3. To handle hardware events or exceptions
   
4. To schedule processes for execution
   

Answer: c) To handle hardware events or exceptions

 

Question 18. Which of the following is not a type of file system in Linux?

1. FAT32
   
2. Ext4
   
3. XFS
   
4. Btrfs
   

Answer: a) FAT32

 

Question 19. What is the main purpose of a semaphore in process synchronization in an operating system?

1. To allocate memory to processes
   
2. To manage the user interface of the operating system
   
3. To control access to shared resources
   
4. To terminate a process
   

Answer: c) To control access to shared resources

 

Question 20. What is the function of a command interpreter in an operating system?

1. To allocate memory to processes
   
2. To manage system resources like CPU and memory
   
3. To provide an interface for users to interact with the computer
   
4. To schedule processes for execution
   

Answer: c) To provide an interface for users to interact with the computer

That wraps up our top 20 operating system MCQ questions and answers! We hope this has been a helpful resource for you to test your knowledge or prepare for an operating system-related interview. Remember to thoroughly understand the concepts behind these questions to have a solid foundation in operating systems, which is a critical aspect of computer science and IT. Good luck with your studies or interviews!

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