Jawaharlal Nehru Technological University Hyderabad 2010-5th Sem M.C.A -Iester Regular s y/ust DISTRIBUTED OPERATING SYSTEMS - Question Paper

Code No: 47
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
MCA-IV Semester Regular exams July/August 2010
DISTRIBUTED OPERATING SYSTEMS
Time: 3hours Max.Marks:60
ans any 5 ques.
All ques. carry equal Marks
- - -
1.a) define the hardware and software requirements for designing a distributed
system.
b) discuss the advantages and limitations of distributed systems.
2.a) Write a brief notes on ATM networks. Also list the merits and limitations.
b) Write a brief notes on remote procedure calls and group communication.
3.a) define the following:
i) Bully algorithm
ii) Ring algorithm.
b) elaborate atomic transactions? define them with suitable illustrations.
4.a) elaborate threads? define their significance.
b) Write a brief notes on dead lock prevention in distributed systems.
c) discuss briefly about scheduling in distributed systems.
5.a) define the problems in implementing the distributed file systems.
b) define the design problems for designing distributed file systems.
6.a) What is a shared memory? discuss about page based distributed shared memory.
b) Write a brief notes on object based distributed shared memory.
7. Write a brief notes on the following:
a) UNIX emulation in MACH
b) Process management in MACH
8. Write a brief notes on the following:
a) Security service in DCE
b) Directory service in DCE
c) DCE threads.
--ooOoo--
R06

Earning:   Approval pending.