University of Madras
Chepauk, Chennai - 600 005. Master Degree in Information Technology Title of the Paper : Operating System
Month & Year of Examination: April & 2013 Subject Code : PSB2D Semester : II Year : First Year Time : Three hours Maximum : 75 marks PART A - (10 * 1 = 10 marks)
Answer any TEN questions. All questions carry equal marks. Each answer should not exceed 50 words.
PART B - (5 * 5 = 25 marks)
Answer any FIVE questions. All questions carry equal marks. Each answer should not exceed 200 words. 13. What are the advantages of distributed operating system?
14. What is the difference between a hard real time system and a soft real time system? 15. How are messages used in interprocess synchronization? 16. What are the different methods for handling deadlocks? 17. Why paging and segmentation is combined? 18. What is the Frame allocation policy? 19.Draw the block diagram of windows 2000. PART C - (4* 10 = 40 marks)
Answer any FOUR questions. All questions carry equal marks. Each answer should not exceed 500 words. 20.Explain real time operating system. Compare it with other operating system.
21.Define spooling and the need for it. Explain its working with necessary diagrams. 22. Differentiate Pre-emptive and Non-preemptive scheduling giving the application of each of them. 23.Describe the basic concepts for free space management. 24. Discuss about directory structure organization. 25. Draw the NTFS volume layout and also explain each. University of Madras
Chepauk, Chennai - 600 005. Master Degree in Information Technology Title of the Paper : Operating System
Month & Year of Examination: November & 2012 Subject Code : PSB2D Semester : II Year : First Year Time : Three hours Maximum : 75 marks PART A - (10 * 1 = 10 marks)
Answer any TEN questions. All questions carry equal marks Each answer should not exceed 50 words. 1. What are the services of OS?
2. Define dual mode operation. 3. What are process states? 4. Define multiprocessing. 5. What is said to be initial section? 6. Write the characteristics of deadlock. 7. State the advantages of multiple partition in storage management. 8. Define scheduling? 9. What is thrashing? 10. How reliability is measured? 11. What is a file? 12. What is cipher text? PART B - (5 * 5 = 25 marks)
Answer any FIVE questions. All questions carry equal marks. Each answer should not exceed 200 words. 13. Compare distributed with real time system.
14. Explain the hardware protection. 15. Describe concurrent process management. 16. Explain the process synchronization issues. 17. What is demand paging? Explain. 18. Explain how free space is allocated and managed. 19. Compare UNIX with windows OS for file handling operations. PART C - (3 * 10 = 30 marks)
Answer any FOUR questions. All questions carry equal marks. Each answer should not exceed 500 words. 20. Explain CPU scheduling concept. Illustrate with any one algorithm.
21. Describe how deadlock is prevented and avoided. How deadlock is detected. 22. What is storage management? Describe paged segmentation. 23. Discuss briefly on directory structure organization and implementation issues. 24. Describe how security systems are implemented in UNIX and windows OS. 25. Write short notes on: (a) File encryption (b) Storage hierarchy. |
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