DISTRIBUTED COMPUTING (DC) MAY 2011 COMPUTER SCIENCE SEMESTER 8
(3 Hours) [Total Marks :-100]
1. (a) What are the desirable features of an Open Distributed Systems? [10 Marks]
(b) Differentiate between Process and Threads using proper examples. [10 Marks]
(c) Compare DOS and NOS as platforms for Distributed Systems. [10 Marks]
2. (a) What are the parameter passing-semantics of RPC? [5 Marks]
(b) What makes a RPC complicated? Discuss the protocols for handling some of the
complicated RPCs. [5 Marks]
complicated RPCs. [5 Marks]
(c) Discuss the different methods available for ensuring ordered message delivery? Name the
protocols which implement these methods. [10 Marks]
3. (a) What are the issues in designing Load Balancing algorithms? [10 Marks]
(b) Explain the different distributed physical clock synchronization algorithms with their relative
advantages and disadvantages. [10 Marks]
advantages and disadvantages. [10 Marks]
4. (a) What are the criteria to be considered for choosing the block size while designing a DSM?
Explain the different replacement strategies of migrating or replicating the blocks from the
cache. [10 Marks]
(b) What is the notion of a context in a name space? Explain the different clustering and context
binding strategies of names. [10 Marks]
5. (a) Describe the different approaches for deadlock detection in DS. [10 Marks]
(b) What do you mean by a Consistency Model? Explain the available consistency models and
the requirements of the system which support them. [10 Marks]
6. (a) What are the probable failures in the message passing form of IPC? With neat diagrams
explain the reliable IPC protocols. [10 Marks]
(b) Describe the different models for organizing threads. Explain the working of a multi-threaded
server. [10 Marks]
7. Write short notes on(any two) :- [20 Marks]
(a) Lightweight RPC
(b) Process Migration in Heterogeneous Systems.
(c) Stateful and stateless file servers.
(d) Ricart Agrawala Algorithm-Merits and demerits.
binding strategies of names. [10 Marks]
5. (a) Describe the different approaches for deadlock detection in DS. [10 Marks]
(b) What do you mean by a Consistency Model? Explain the available consistency models and
the requirements of the system which support them. [10 Marks]
6. (a) What are the probable failures in the message passing form of IPC? With neat diagrams
explain the reliable IPC protocols. [10 Marks]
(b) Describe the different models for organizing threads. Explain the working of a multi-threaded
server. [10 Marks]
7. Write short notes on(any two) :- [20 Marks]
(a) Lightweight RPC
(b) Process Migration in Heterogeneous Systems.
(c) Stateful and stateless file servers.
(d) Ricart Agrawala Algorithm-Merits and demerits.
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