Download JNTUH MCA 4th Sem R15 2018 January 824AF Distributed Systems Question Paper

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Code No: 824AF

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

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MCA IV Semester Examinations, January - 2018

DISTRIBUTED SYSTEMS

Time: 3hrs

Max.Marks:75

Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.

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PART - A

5 x 5 Marks = 25

1. Explain about interprocess communication. [3]
2. What is thread? Differentiate thread and process. [3]
3. Write down the features of squirrel system. [3]

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4. What are the drawbacks of locking? Explain. [3]
5. Discuss about CORBA services. [3]

PART - B

5 x 10 Marks = 50

1. What is firewall? Explain. [5+5]

   OR

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   Discuss about RPC in distributed environment. [10]
2. Explain various architectures of distributed system. [5+5]

   OR

   Write a short notes on operating system features in distributed systems. [5+5]
3. Explain about X.500 directory service. [5+5]

   OR

   Explain the following. [5+5]
   1. Virtual file system

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   2. Client caching.
4. Write a short notes on distributed debugging. [5+5]

   OR

   Discuss about peer to peer middleware. [5+5]
5. Discuss about napster system. [5+5]

   OR

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   What are the tasks of routing overlays? [5+5]
6. Explain about distributed deadlocks. [5+5]

   OR

   Discuss about system model and group communication. [5+5]
7. Explain about replication in distributed systems. [5+5]

   OR

   Write a short notes on fault tolerant services in distributed systems. [5+5]

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8. Write a short notes on digital signatures. [5+5]

   OR

   Explain about TLS. [5+5]
9. Discuss about distributed shared memory. [5+5]

   OR

   Explain in detail about CORBA RMI. [5+5]

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