Download PTU (I.K.Gujral Punjab Technical University (IKGPTU)) B-Tech (Bachelor of Technology) (ECE)-Electronics And Communications Engineering 2020 December 6th Sem 71120 Operating Systems Previous Question Paper
Roll No.
Total No. of Pages : 02
Total No. of Questions : 18
B.Tech. (ECE) (2012 to 2017) (Sem.?6)
OPERATING SYSTEMS
Subject Code : BTCS-401
M.Code : 71120
Time : 3 Hrs. Max. Marks : 60
INST RUCT IONS T O CANDIDAT ES :
1 .
SECT ION-A is COMPULSORY cons is ting of TEN questions carrying TWO marks
each.
2 .
SECT ION-B c ontains F IVE questions c arrying FIVE marks eac h and s tud ents
have to atte mpt any FOUR q ues tions.
3 .
SECT ION-C contains THREE questions carrying T EN marks e ach and s tudents
have to atte mpt any T WO questio ns.
SECTION-A
Write briefly :
1)
What is dual mode operation?
2)
What is spooling?
3)
Why page size is always power of 2?
4)
Differentiate between kernel and shell.
5)
What are semaphores?
6)
Define Safe State.
7)
Draw resource allocation graph.
8)
What do you mean by best fit and first fit?
9)
What is directory?
10) What are multiprocessor systems?
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SECTION-B
11) What is file system? What are the various attributes of files?
12) How paging and segmentation are associated?
13) Discuss the effect of time quantum on the performance of Round robin scheme.
14) Write short notes on Pipes?
15) Differentiate between internal and external fragmentation? Which one occurs in paging
system?
SECTION-C
16) What are the recent trends in operating system?
17) What is a process? Explain different states of a process with diagram. Also explain in
detail the contents of PCB of a process.
18) What do you mean by Page Replacement? Explain various Page Replacement algorithms
with example of each.
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
2 | M - 7 1 1 2 0
( S 2 ) - 8 3 6
This post was last modified on 13 February 2021