Andhra University 2007-2nd Year M.C.A Elective-1:DISTRIBUTED SYSTEMS/: Second Semester/ - Question Paper

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M.C.A. Degree exam
2nd Year: 2nd Semester
Elective-1: DISTRIBUTED SYSTEMS
(Effective from the admitted batch of 2004-2005)

Time: 3hrs. Max. Marks: 100

1st ques. is compulsory.
ans any 4 from the remaining ques..
All ques. carry equal marks
ans all parts of any ques. at 1 place



1.Answer the following:
a) Transaparency
b)Semaphore
c)Remote Method Invocation
d)Thread
e)Closure Mechanism
f)Debugging
g)TimeStamp
h)Synchronisation
i)Strict Consistency.
j)Marshalling

2. a)Describe Middleware
b)Describe Client-Server architecture.

3. a)Explain internet protocols.
b)Explain Group Communication

4. explain java RMI.

5. explain Sun Network File System.

6 a)Explain Cristian’s Algorithm.
b)Explain Global State.

7 a) discuss a token ring algorithm to achieve mutual exclusion.
b)Classify distributed transactions.

8 a) discuss two-phase locking procedure.
b) define fault-tolerant services.

Earning:   Approval pending.