Operating Systems MCQs PDF

**MCQs on Operating Systems** 1. **What is the primary function of an operating system?** - A\) To manage hardware resources - B\) To execute user programs - C\) To provide a user interface - D\) All of the above\ **Answer:** D) All of the above 2. **Which of...

**MCQs on Operating Systems** 1. **What is the primary function of an operating system?** - A\) To manage hardware resources - B\) To execute user programs - C\) To provide a user interface - D\) All of the above\ **Answer:** D) All of the above 2. **Which of the following is NOT a component of a computer system?** - A\) Hardware - B\) Operating System - C\) Application Programs - D\) Network Protocols\ **Answer:** D) Network Protocols 3. **What does \'multiprogramming\' allow an operating system to do?** - A\) Run multiple applications on a single CPU - B\) Organize jobs so that the CPU always has one to execute - C\) Use multiple CPUs to execute processes - D\) None of the above\ **Answer:** B) Organize jobs so that the CPU always has one to execute 4. **In the context of operating systems, what is a \'process\'?** - A\) A program in execution - B\) A passive entity - C\) A type of hardware - D\) A user interface\ **Answer:** A) A program in execution 5. **What is the purpose of memory management in an operating system?** - A\) To manage CPU scheduling - B\) To keep track of memory usage - C\) To manage I/O devices - D\) To provide a user interface\ **Answer:** B) To keep track of memory usage 6. **Which of the following is a characteristic of a real-time operating system?** - A\) It can run multiple applications simultaneously - B\) It has well-defined fixed time constraints - C\) It is designed for general-purpose computing - D\) It does not require user interaction\ **Answer:** B) It has well-defined fixed time constraints 7. **What is \'virtual memory\'?** - A\) Memory that is physically present in the computer - B\) A technique that allows execution of processes not completely in memory - C\) Memory used for caching data - D\) None of the above\ **Answer:** B) A technique that allows execution of processes not completely in memory 8. **Which of the following is an example of a cloud computing service model?** - A\) Software as a Service (SaaS) - B\) Hardware as a Service (HaaS) - C\) Network as a Service (NaaS) - D\) All of the above\ **Answer:** A) Software as a Service (SaaS) 9. **What is the role of a device driver in an operating system?** - A\) To manage CPU scheduling - B\) To provide a uniform interface between the controller and the kernel - C\) To execute user applications - D\) To manage memory allocation\ **Answer:** B) To provide a uniform interface between the controller and the kernel 10. **Which of the following best describes \'asymmetric multiprocessing\'?** - A\) All processors perform the same tasks - B\) Each processor is assigned a specific task - C\) Processors share the same memory - D\) None of the above\ **Answer:** B) Each processor is assigned a specific task 11. **What is an interrupt in the context of operating systems?** - A\) A signal to the CPU indicating an event that needs immediate attention - B\) A type of memory management - C\) A method of scheduling processes - D\) A user interface element\ **Answer:** A) A signal to the CPU indicating an event that needs immediate attention 12. **Which of the following is a feature of open-source operating systems?** - A\) They are free to use and modify - B\) They are always more secure than closed-source systems - C\) They require a paid license - D\) They are not available for public use\ **Answer:** A) They are free to use and modify 13. **What is the main purpose of the kernel in an operating system?** - A\) To provide a user interface - B\) To manage system resources - C\) To execute application programs - D\) To handle network communications\ **Answer:** B) To manage system resources 14. **Which of the following is a type of storage management in operating systems?** - A\) File management - B\) Memory allocation - C\) Disk scheduling - D\) All of the above\ \*\* Answer:\*\* D) All of the above 15. **What is the function of a bootstrap program?** - A\) To manage memory allocation - B\) To load the operating system kernel at startup - C\) To execute user applications - D\) To handle interrupts\ **Answer:** B) To load the operating system kernel at startup 16. **Which of the following describes \'timesharing\' in operating systems?** - A\) Running multiple applications on a single CPU - B\) Allowing multiple users to interact with the system simultaneously - C\) Using multiple CPUs to execute processes - D\) None of the above\ **Answer:** B) Allowing multiple users to interact with the system simultaneously 17. **What is a \'trap\' in the context of operating systems?** - A\) A hardware interrupt - B\) A software-generated interrupt caused by an error - C\) A method of scheduling processes - D\) A type of memory management\ **Answer:** B) A software-generated interrupt caused by an error 18. **Which of the following is a benefit of using multiprocessor systems?** - A\) Increased security - B\) Improved resource sharing - C\) Increased throughput - D\) None of the above\ **Answer:** C) Increased throughput 19. **What is the primary function of the I/O management in an operating system?** - A\) To manage CPU scheduling - B\) To handle input and output operations - C\) To allocate memory - D\) To provide a user interface\ **Answer:** B) To handle input and output operations 20. **Which of the following is a characteristic of secondary storage?** - A\) It is volatile - B\) It provides large non-volatile storage capacity - C\) It is faster than main memory - D\) It is directly accessible by the CPU\ **Answer:** B) It provides large non-volatile storage capacity 21. **What does \'swapping\' refer to in operating systems?** - A\) Moving data between main memory and secondary storage - B\) Changing the CPU scheduling algorithm - C\) Allocating memory to processes - D\) None of the above\ **Answer:** A) Moving data between main memory and secondary storage 22. **Which of the following is a common method for process synchronization?** - A\) Mutexes - B\) Semaphores - C\) Monitors - D\) All of the above\ **Answer:** D) All of the above 23. **What is the purpose of a file system in an operating system?** - A\) To manage CPU scheduling - B\) To provide a way to store and retrieve files - C\) To handle memory allocation - D\) To manage I/O devices\ **Answer:** B) To provide a way to store and retrieve files 24. **Which of the following is a type of network operating system?** - A\) Windows Server - B\) Linux - C\) macOS - D\) All of the above\ **Answer:** A) Windows Server 25. **What is the main advantage of using a distributed operating system?** - A\) Increased security - B\) Improved resource sharing - C\) Simplified user interface - D\) None of the above\ **Answer:** B) Improved resource sharing 26. **Which of the following is a characteristic of a peer-to-peer network?** - A\) Centralized control - B\) All nodes can act as both clients and servers - C\) Requires a dedicated server - D\) None of the above\ **Answer:** B) All nodes can act as both clients and servers 27. **What is the purpose of a virtual machine manager (VMM)?** - A\) To manage physical hardware - B\) To provide virtualization services - C\) To execute user applications - D\) To handle network communications\ **Answer:** B) To provide virtualization services 28. **Which of the following is a common type of real-time operating system?** - A\) Windows - B\) Linux - C\) VxWorks - D\) macOS\ **Answer:** C) VxWorks 29. **What is the main function of a cache in a computer system?** - A\) To store data permanently - B\) To speed up data access by storing frequently used data - C\) To manage I/O operations - D)