OPERATING SYSTEMS-OCTOBER-2011

FOURTH SEMESTER DIPLOMA EXAMINATION IN ENGINEERING/TECHNOLOGY-OCTOBER, 2011

OPERATING SYSTEMS

PART-A

(Maximum marks:15)

v  Answer the following questions in one or two sentences:

1.Define batch systems.

2.Define kernel.

3.What is thread?

4.List different process states.

5.What is fragmentation?

6.What is TLB?

7.Describe boot control block.

8.Describe Bit vector.

9.Differentiate text and binary file.

10.Describe the command ‘pwd’.

PART-B

(Maximum marks:60)

(Answer one full question from each unit)

Unit-1

v  (a)Describe the user,system views of an operating system.(6)

          (b)Expllaiin  multi programmed systems.(6)

OR

v  (a)Describe advantages of multiprocessor systems.(6)

(b)Write note on Embedded Computing.(6)

Unit-2

v  (a)Explain process state diagram(6)

(b)Explain benefits of multithreadedprogramming.(6)

         

OR

v  (a)Write on different scheduling criteria of CPU scheduling algorithms.(6)

          (b)Describe deadlock in detail.(6)

UNIT-3

v  (a)Describe overlays.(6)

          (b)Describe segmentation.(6)

OR

v  (a)Explain demand paging(6)

          (b)Describe LRU page replacement algorithm(6)

UNIT-4

v  Explain different disk scheduling algorithms.(12)

OR

v  (a)Explain layered file system Architecture.(6)

          (b)Explain different file access methods.(6)

UNIT-5

v  (a)Explain the kernel and shell.(6)

          (b)Explain internal and external commands in linux.(6)

OR

v  Explain the mechanism for process creation in linux.(12)        

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