Guru Gobind Singh Indraprastha Vishwavidyalaya 2011-4th Sem B.E Computer Engineering Operating system eter of univeristy - Question Paper

First term exam
Semester-4th
Sub- Operating system
Paper code- ETEC-212(regular)
Max. Marks -30
every ques. carry 10 marks and attempt any 5 ques. from 1st and all from others.

Question-1
1. Explain if a system doesnot have an OS elaborate the issue a user will have?
2. What is the difference ranging from a program and process?
3. SJF is the most optimal method of scheduling but why this method is not popular?
4. What is the issue of starvation also discuss its solution?
5. Explain scheduling criteria throughput and turnaround time.
6. Explain the role of time sharing in info technology.

Question-2
1. Differentiate ranging from physical address and logical address. Also, discuss the cause why CPU converts logical address into physical address.
2. Differentiate ranging from multiprogramming and multi-processing systems.
3. Given memory partitions of 100 KB, 500KB,200KB, 300KB and 600KB, how would every of the 1st fit, best fit and worst fir algorithms place processes of 212KB, 417KB, 112KB, and 426KB?

Question-3
1. Explain, which memory management scheme overcomes the issue of fragmentation and how?
2. A process contains 8 virtual pages on disk and is assigned a fixed allocation of 4 page frames in main memory. The subsequent page traces access.
1,0,2,2,1,7,6,7,0,1,2,0,3,0,4,5,1,5,2,4,5,1,5,2,4,5,6,7,6,7,2,4,2,7,3,3,2,3
Show the successive pages residing in the 4 frames using the LRU replacement policy.

Earning:   Approval pending.