Algorithm MCQs

1. What is a thread in the context of operating systems?

a) A lightweight process b) A hardware component c) A memory management technique d) A type of semaphore

2. Which of the following is a multithreading model?

a) Many-to-One b) One-to-One c) Many-to-Many d) All of the above

3. What is the purpose of scheduler activations?

a) To manage thread scheduling in user space b) To manage memory allocation c) To handle hardware interrupts d) To synchronize processes

4. Which of the following is an example of a threaded program?

a) A web server b) A text editor c) A calculator d) A file compression tool

5. What is the Reader-Writer Problem?

a) A synchronization problem involving shared data b) A memory management problem c) A CPU scheduling problem d) A deadlock problem

6. What is the Producer-Consumer Problem?

a) A synchronization problem involving a shared buffer b) A memory allocation problem c) A process scheduling problem d) A thread creation problem

7. What is the classical two-process solution to the Producer-Consumer Problem?

a) Using semaphores b) Using mutex locks c) Using monitors d) Using spinlocks

8. What is the classical n-process solution to the Producer-Consumer Problem?

a) Using a bounded buffer b) Using semaphores c) Using monitors d) Using hardware primitives

9. Which of the following is a hardware primitive for synchronization?

a) Test-and-Set b) Compare-and-Swap c) Both a and b d) None of the above

10. What is the main advantage of multithreading?

a) Improved responsiveness b) Better resource utilization c) Simplified program structure d) All of the above

11. What is the main disadvantage of the Many-to-One multithreading model?

a) Limited concurrency b) High overhead c) Complex implementation d) None of the above

12. What is the main advantage of the One-to-One multithreading model?

a) High concurrency b) Low overhead c) Simple implementation d) None of the above

13. What is the main purpose of the Test-and-Set instruction?

a) To implement mutual exclusion b) To manage memory allocation c) To handle interrupts d) To synchronize threads

14. What is the main purpose of the Compare-and-Swap instruction?

a) To implement atomic operations b) To manage memory allocation c) To handle interrupts d) To synchronize threads

15. What is the main challenge in solving the Reader-Writer Problem?

a) Ensuring readers and writers access shared data correctly b) Managing memory allocation c) Handling CPU scheduling d) Avoiding deadlocks

Operating Systems MCQs