Kerala University 2010-5th Sem B.Tech Computer Science and Engineering CS - Operating Systems - Question Paper
FIFTH SEMESTER B.TECH DEGREE EXAMINATION
08.505 OPERATING SYSTMS
Time: Three Hours Maximum: 100 Marks
PART A tAm n't?r att questions)
1. Explain the features of real time operating system.
2. Wliat is (he purpose of the command interpreter?
3. What are the activities of an operating system in regard to file management?
4. Explain the criteria for choosing a CPU scheduling algorithm
5. Differentiate segmented paging and paged segmentation addressing schemes
6. Differentiate deadlock and starvation
7. What is a semaphore?
8. What is the importance of protection in operating system?
9. Whal is thrashing? How can this be eliminated?
10. Write short notes on sector queuing?
(10 x. 4 40 marks)
PART B Module I
11. a) Briefly exptain OS scrvkes
b)Compare and contrast multi programming & time sharing operating system
OR
12. a)Which are the operation allowed to files b)Explam file allocation methods. e)Explain various file system services
Module [1
13. a)[)iscu5s demand paging scheme for memory management b)Considcr the following set of processes with the given CPU burst time and
arrival time.
Process Arrival Time liursttime
PI 0.0 8
P2 l>.4 A
P3 1.0 1
What is the average turnaround time for these process with FCFS scheduling algorithm and SJF scheduling algorithm
OR
14. a)What are the action taken when page fault occurs bjDefine critical sett ion problem
cjDescribe the non-preemptivc CPU scheduling algorithm
Module EII
15. a)Compare various disk scheduling algorithm b}Explain above deadlock avoidance & prevention
OR
] 6. a) Explain dynamic protection structures b)Various measures to improve security to operating system - Expain.
(3 x 20 *= 60 marks)
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