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TAMIL NADU OPEN UNIVERSITY MCA - II (SEM 4) JUN 2008 : Operating Systems

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Wk 6 MCA 657 MCA-17 M.C.A. DEGREE EXAMINATION JUNE 2008. Second Year/Fourth Semester OPERATING SYSTEMS Time : 3 hours Maximum marks : 75 Answer for 5 marks questions should not exceed 2 pages. Answer for 10/15 marks questions should not exceed 5 pages. PART A (5 5 = 25 marks) Answer any FIVE questions. 1. Discuss the various services provided by the operating system. 2. Explain Real Time operating system. 3. Diagrammatically illustrate and discuss the states a process can be in. 4. What is Virtual memory? Discuss. Wk 6 5. Distinguish between contiguous non contiguous memory allocation. and 6. What is compaction? Justify the need for the same. 7. Explain Shortest Seek Time First disk scheduling algorithm. PART B (5 10 = 50 marks) Answer any FIVE questions. 8. Discuss the following types of Operating Systems : (a) Time Sharing Systems. (5) (b) Distributed Operating systems. (5) 9. Distinguish between Preemptive and Non-Preemptive scheduling. Give relevant example for each and discuss the same. 10. What is deadlock? Discuss the four conditions for deadlock. Give an example for deadlock. 11. Diagrammatically segmentation. illustrate 2 and discuss MCA 657 Wk 6 12. Discuss algorithms. the following page replacement (a) LRU replacement (3) (b) FIFO replacement (3) (c) Optimal replacement. (4) 13. With a neat sketch discuss the structure of the UNIX operating system. 14. List and discuss the major activities of an operating system in regard to file management? 3 MCA 657

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Additional Info : Mca - II (sem 4) June 2008 Question Paper - Operating Systems
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