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TAMIL NADU OPEN UNIVERSITY MCA - III (SEM 5) JUN 2009 : Distributed Computing

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Ws 6 MCA-434 MCA 24 M.C.A. DEGREE EXAMINATION JUNE 2009. Fifth Semester / Third Year DISTRIBUTED COMPUTING Time : 3 hours PART A (5 Maximum marks : 75 5 = 25 marks) Answer any FIVE questions. 1. Compare tightly coupled and loosely coupled systems in terms of delay and data rates. 2. What is the difference between computation migration and process migration? Discuss. 3. What is inter-process communication? Discuss the need for the same. 4. Why is deadlock detection much more expensive in a distributed environment than it is in a centralized environment? Discuss. 5. What are the benefits of a DFS when compared to a file system in a centralized system? Discuss. Ws 6 6. When is it useful to have replication fragmentation of data? Explain your answer. or 7. List the techniques and discuss any one technique through which fault tolerance can be achieved in distributed systems. PART B (5 10 = 50 marks) Answer any FIVE questions. 8. List and discuss the different transparency in distributed systems. kinds of 9. List and discuss the four design issues for the communication primitives and some of the principal choices available for implementing the client server model. 10. Diagrammatically illustrate and discuss the ten steps in a Remote Procedure Call. 11. List and discuss the various design issues for threaded packages. 12. What is a Transaction? List and discuss the properties that must be satisfied by a Transaction. Give relevant example. 2 MCA-434 Ws 6 13. Diagrammatically illustrate Distributed DBMS Architecture. and discuss the 14. With relevant examples discuss transaction management in a distributed database management environment. 3 MCA-434

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Additional Info : Mca - III (sem 5) June 2009 Question Paper - Distributed Computing
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