OPERATING SYSTEMS-MARCH-2011

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

OPERATING SYSTEMS

PART-A

(Maximum marks:15)

v  Answer the following questions in one or two sentences:

1.Define multiprocessing systems.

2.Define deadlock in OS.

3.What is FCFS scheduling algorithms?

4.What are the file extensions for executable files?

5.List the linux command to make a directory.

6.What is segmentation?

7.What is CPU-I/O burst?

8.Define virtual memory.

9.What is caching?

10.Dfine streams.

PART-B

(Maximum marks:60)

(Answer one full question from each unit)

Unit-1

v  (a)Explain multi-programming system and time sharing system.(6)

          (b)Explain the main memory management.(6)

OR

v  (a)Differentiate client server ssysttem and peer to per system.(6)

(b)Explain the file management.(6)

Unit-2

v  (a)Explain process control block with blockdiagram(6)

(b)What are different schedulers used in process management?(6)

         

OR

v  (a)Explain the shortest job first scheduling algorithm.(6)

          (b)Explain multilevel feedback queue scheduling.(6)

UNIT-3

v  (a)Explain swapping concept with diagram.(6)

          (b)Explain different memory allocation methods.(6)

OR

v  (a)What is demand paging?Explain(6)

          (b)Explain any two page replacement algorithms.(6)

UNIT-4

v  (a)Explain briefly the kernel I/O subsystem.(6)

(b)Explain any two disk scheduling algorithms.(6)

OR

v  (a)Explain briefly the different file operations.(6)

          (b)Explain briefly the directory structure.(6)

UNIT-5

v  Explain the linux file systems in detail.(12)

OR

v  (a)Explain the linux commands with suitable examples:

(i)ls (ii)cat (iii)cp(iv)echo(v)banner(vi)wc(6)

(b)Explain the features of shell programming.(6)

        

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