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Shivaji University 2005 B.E Computer Science .( & Engineering)Part -1 - exam paper

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H - 620

B.E. (CSE) (Part -1) (New) Examination, 2005

DISTRIBUTED SYSTEMS

Day and Date: Thursday, 1-12-2005    Max. Marks: 100

Time: 10.00 a.m. to 1.00 p.m.

Instructions: 1) Attempt any three questions from each Section.

2) Figures to right indicates full marks.

SECTION -1

1. ftt)"Explain what is meant by transparency, and give examples of different types of transparency.

8


WExplain parameter marshaling in RPC. How to pass reference parameters ? 8 It. a}Explain static and dynamic remote method invocation. Explain Java RMI( 8

.b)-Define persistent and transient communication. Explain primitives in Berkeley sockets.

8


3.    Define stateless and stateful servers.    4

r'Explain models for code migration.    6

j&)What is software agents ? Explain use of agent communication languages

6


in software agents.

ft w

4.    a) Define clock skew and logical clocks. How clock synchronization is

achieved in distributed systems ?

9


b) What is transaction ? Explain classification of transactions with suitable

example.

9


SECTION - II

5. a) Explain four ways of dealing with the' shared files in a distributed system. 8

b)    Compare NFS version 3.0 and 4.0.

4

4


c)    Explain synchronization in coda.

6. a) Explain principal of log based striping in XFS.    8

b) Explain general organization of Domino server. How request is handled in cluster of Domino servers ?

8


7. a) Discuss layered architecture of Jini system. How client discovers availability

of particular service in Jini system ?    8

**8


b) Explain Jini lookup service.

8. a) Discuss memory management in Mach.    9

*

b) Explain design goals and main features of chorus.    9







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