GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VIII (Old) EXAMINATION - WINTER 2019
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Subject Code: 180701 Date: 25/11/2019
Subject Name: Distributed Systems
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q.1 (a) What is a distributed system? Enlist and explain design feature of a distributed system. 07
(b) Enlist the IPC synchronization technique in distributed systems. Explain any one of them in detail. 07
Q.2 (a) Explain any two protocols of distributed systems. 07
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(b) Explain RPC. 07
OR
(b) Explain RMI architecture using figure. 07
Q.3 (a) Provide Difference between Message Passing and Distributed Shared Memory(DSM). Explain any technique of software implementation of DSM. 07
(b) How the process is specified using formal model? Define the process execution and admissibility using formal model. 07
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OR
Q.3 (a) Explain any two methods of common clock implementation using hardware. 07
(b) Explain any one method of logical clock implementation using example. 07
Q.4 (a) Differentiate between load distribution and balancing. Explain any technique of load distribution or balancing. 07
(b) What is write invalidate protocol? Explain how it works using figure. 07
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OR
Q.4 (a) Discuss thread synchronization any two techniques. 07
(b) Compare and contrast any 3 consistency models. 07
Q.5 (a) Explain what is coherence protocol. Explain any one coherence protocol. 07
(b) Compare and contrast the any three ways file naming system in distributed systems. 07
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OR
Q.5 (a) Why mutual exclusion is more complex in distributed systems? Compare and contrast mutual exclusion algorithms. 07
(b) Explain the design issues of distributed file system. 07
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