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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