Kerala University 2010-5th Sem B.Tech Computer Science and Engineering Com - Operating systems - Question Paper
KIFTH SEMESTER B.TFCH DEGREE EXAMINATION
08.505 OPERATING SYSTMS
Tunc: Three Hours Maximum: 1U0 Marks
PART A Mnsm'r at! tfwislions)
1. Explain the features of real time operating system.
2. What is the purpose of the tommand interpreter?
3. What are the activities of an operating system in regard to fik management?
4. Explain the criteria for choosing a CPU scheduling algorithm
5. Differentiate segmented paging and paged segmentation addressing schemes
6. DilTercntiatc deadlock and starvation
7. What is a semaphore'?
S. What is the importance of protection in operating system?
9 What is thrashing? How cn (his be eliminated?
10. Write short notes on scctor queuing?
(10x4 =40 marks)
PART B Module I
11. aj Briefly explain OS services
bKompare and contrast multi programming & time sharing operating system
OK
12. a)Which are the operation allowed to files b)Explain file allocation methods, cjlixplain various file system services
Mudule [I
13. a)Discuss demand paging scheme for memory management
b)Consider the following set of processes with the given CPU burst time and
urrival time.
Proccss Arrival Time Bunit time
PI 0,0 8
P2 0,4 4
P3 L.O 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 b}Define critical section problem
c) Describe the nun-preemptive CPU scheduling algorithm
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| Earning: Approval pending. |
