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Operating System Interview Questions and Answers

  Difficulty Level: AllBeginnerIntermediateExpert

Ques 1. What is the OPERATING SYSTEM?

Ques 2. What are the OPERATING SYSTEM TYPES?

Ques 3. What are the basic functions of an operating system?

Ques 4. Why paging is used in OS?

Ques 5. While running DOS on a PC, which command would be used to duplicate the entire diskette?

Ques 6. What resources are used when a thread created? How do they differ from those when a process is created?

Ques 7. What is the virtual memory?

Ques 8. What is Throughput, Turnaround time, waiting time and Response time?

Ques 9. What is the state of the processor, when a process is waiting for some event to occur?

Ques 10. What is the important aspect of a real-time system or Mission Critical Systems?

Ques 11. What is the difference between Hard and Soft real-time systems?

Ques 12. What is the cause of thrashing? How does the system detect thrashing?

Ques 13. What is multi tasking, multi programming and multi threading?

Ques 14. What is hard disk and what is its purpose?

Ques 15. What is fragmentation? Different types of fragmentation?

Ques 16. What is DRAM? In which form does it store data?

Ques 17. What is the Dispatcher?

Ques 18. What is the CPU Scheduler?

Ques 19. What is the Context Switch?

Ques 20. What is the cache memory?

Ques 21. What is a Safe State and what is its use in deadlock avoidance?

Ques 22. What is the Real-Time System?

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