Dr Bhim Rao Ambedkar University 2007 B.Tech Information Technology Operating Systems - Question Paper

H-490
THIRD YEAR OF COMPUTER SCIENCE AND ENGINEERING (PART-1) EXAMINATION, 2005

OPERATING SYSTEMS 1

Day and Date: Monday, 5-12-2005 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) Describe the following: [Marks 8]

a) Multiprigrammed systems
b) Batch systems

b) What is the System call? define the process control for running a program in UNIX. [Marks 8]

Q.2
a) What is process? discuss PCB. [Marks 8]

b) Explain in detail Round-Robin scheduling with the help of suitable examples. [Marks 8]

Q.3
a) What is Monitor? discuss the monitor with condition variables. [Marks 8]

b) What is critical region? discuss the implementation of conditional critical region construct. [Marks 8]


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

a) Multiprocessors systems
b) Context Switching
c) Indirect intercrosses communication.





SECTION-2

Q. 6)
a) discuss the resource allocation graph in detail [Marks 8]

b) discuss various methods of handling deadlocks. [Marks 8]



Q.6)

a) Expalin in detail the allocation, deallocation in paging system. What hardware supports it?

b) discuss the Fragmentation and explain its solutions. [Marks 8]

Q.7)
a) Differentiate and compare ranging from program controlled I/O and interrupt driven I/O. [Marks 8]

b) How does DMA increase system concurrency? discuss. [Marks 8]

Q.8) Write a short notes on (any three): [Marks 18]

a) Blocking and Non blocking I/O
b) Wait for graph
c) ‘1s’ command
d) ‘Sort’ command

Earning:   Approval pending.