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Distributed Operating System – BE (PU) Question Paper 2010 | SEM: Spring

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Distributed Operating SystemPokhara University | Old Question Paper
Bachelor of Engineering (BE)
Distributed Operating System
Level: Bachelor | Year: 2010 | Semester : Spring

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Question Paper is Given Below:

Full Marks: 100 | Pass Marks: 45 | Time: 3 Hrs
Candidates are required to give their answers in their own words as far as practicable. The figures in the margin indicate full marks.

Attempt all the questions.

1. a. List key characteristics of distributed system. Explain transparency in detail. [8]
b. How does group communication differ from client-server communication? What do you mean by atomic and reliable multi-cast? [7]

2. a. Differentiate RPC and RMI. Explain how remote method invocation is carried out? [8]
b. What are the advantages of micro kernel over monolithic kernel? Describe process creation method in distributed system.[7]

3. a. Why do system require virtual memory? Define page fault. Explain how page fault is handled in distributed system. [8]
b. Synchronization of clock is essential in distributed system. Why? Describe how network time protocol works. [7]

4. a. When might a DNS server provide multiple answers to a single name look up and why? [7]
b. Explain DIT and DIB in X.500 directory service. [4 + 4]

5. a. What do you mean by replication? Explain gossip architecture for replication management. [7]
b. What do you mean by process group? Explain the services provided for process group. [8]

6. a. What are the differences between private and public key? How digital signature is created? [7]
b. Key distribution is a complex task in authentication system implementation. Why? Explain the features of kerberos. [8]

7. Write short notes on any two: [2 X 5]

  1. Automatic teller machine network.
  2. Preemptive and non-preemptive scheduling
  3. Marshalling and Unmarshalling
Posted By : Hari Prasad Chaudhary | Comment RSS | Category : Bachelor Level, Bachelor of Engineering (BE), Pokhara University
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