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Operating Systems May June 2012 Question Paper

Question Paper Code : 50276
Fourth Semester
Computer Science and Engineering
CS 1252 / CS 1253/070230013 - OPERATING SYSTEMS
(Common to Fifth Semester Information Technology)
(Regulation 2004)
(Common to B.E. (Part-Time) Third Semester - Computer Science and Engineering,
Regulation 2005)
Time : Three hours
Maximum: 100 marks

Answer ALL questions.
PART A - (10 x 2 = 20 marks)
1. What is an Operating System?
2. List out the information contained by Process Control Block(PCB).
3. What is starvation? How can it be solved?
4. Distinguish between preemptive and non preemptive scheduling.
5. Differentiate frames from pages.
6. What is external fragmentation? How can it be solved?
7. List out the attributes of a file.
8. What is Thrashing?
9. What is rotational latency of Disk?
10. List out the disadvantages of FAT file system.

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