Dr Bhim Rao Ambedkar University 2006 B.Tech Information Technology Operating Systems - Question Paper

H-265
THIRD YEAR OF COMPUTER SCIENCE AND ENGINEERING (PART-1) EXAMINATION, 2007

OPERATING SYSTEMS 1

Day and Date: Monday, 27-11-2007 Total Marks: 100
Time: 10.00p.m. To 1.00p.m.

Instructions:

Instructions:
1) Solve any 3 ques. from SECTION-1
2) Solve any 3 ques. from SECTION-2
3) Figures to right shows full marks

SECTION-1

Q.1.
a) What is an OS? discuss the users view and system view towards OS [Marks 8]

b) Explain multiprocessors systems? provide advantages and disadvantages. [Marks 8]



Q.2
a) Describe system calls in detail. [Marks 8]

b)What are the main advantages of multiprogramming. discuss multiprogrammed systems. [Marks 8]

Q.3
a) What is Process? discuss the priority queue. [Marks 8]

b) What is scheduling queue? discuss the various schedulers? [Marks 8]

Q.4 Write a short notes on (any three): [Marks 18]

a) Bounded buffer issue
b) Monitor
c) Naming and buffering
d) SJF algorithm





SECTION-2

Q. 6)
a) discuss the resource allocation graph in detail. Does it mean that if there is a cycle there is a always deadlock [Marks 8]

b) provide the procedure from recovery from deadlocks. [Marks 8]



Q.6)
a) Explain the concept of paging with example? [Marks 8]

b) How swapping taking place under memory managements? [Marks 8]

Q.7)
a) How do you allocate frames among different processes? [Marks 8]

b) Explain the Performa Nance of demand paging. [Marks 8]

Q.8) Write a short notes on (any three): [Marks 18]
a) Deadlock presentation
b) Test and set instruction
c) ‘Memory allocation
d) Fragmentation

Earning:   Approval pending.