OPERATING SYSTEMS-MARCH-2010

FOURTH SEMESTER DIPLOMA EXAMINATION IN ENGINEERING/TECHNOLOGY-MARCH, 2010

OPERATING SYSTEMS

PART-A

(Maximum marks:15)

v  Answer the following questions in one or two sentences:

1.What is multitasking systems?

2.Define process.

3.What do you mean by dispatcher?

4.What is turn around time?

5.What is overlays?

6.What is TLB?

7.Define seek time in disk scheduling.

8.Define boot disk.

9.What the use  ‘Exec’command?

10.Define inode number.

PART-B

(Maximum marks:60)

(Answer one full question from each unit)

Unit-1

v  (a)Describe time showing,microkernel.(6)

          (b)Explain asymmetric and symmetric clustered systems.(6)

OR

v  Describe various operating system services.(12)

Unit-2

v  (a)Explain dead lock recovery process(6)

(bDescribe criticsl section problem(6)

         

OR

v  (a)Explain Round-Robin,Priority scheduling with Gantt chart.(6)

          (b)Explain different multithreading models.(6)

UNIT-3

v  (a)Describe segmentation with suitable diagram.(6)

          (b)Explain paging with TLB.(6)

OR

v  (a)Describe various page replacement algorithms.(8)

          (b)Explain thrashing.(4)

UNIT-4

v  (a)Describe different file access methods.(6)

(b)Explain different directory structure.(6)

OR

v  Explain different file allocation methods(12)

         

UNIT-5

v  (a)Explain the structure Linux OS.(6)

          (b)Describe kernel and shell.(6)

OR

v  (a)Explain text,binary and device files.(6)

(b)What is use of banner,cat,IS,t put commanda in Linux?(6)

        

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