Biju Patnaik University of Technology 2007-7th Sem B.Tech (B Tech),ester advance operating system - Question Paper
BTech(BPUT) seventh semester ques. paper of advance operating system. m-z
Seventh Semester Examination - 2008 ADVANCE OF ER ATI MG SYSTEM Full Marks-70
Time-3 Hours
Answer Question No. 1 which is compulsory and any five from the rest.
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The figures in the right-hand margin indicate marks.
1. Answer the following questions: 2x10
(a) What is a thread in the context of
operating system ?
(b) What is need of naming service in distributed system?
p.m
ic) What is computation migration ?
<d) W'baf is process synchronization ir, distnbuled system
Ce) Whai is ihe need of Distributed Mutual Exclusion algorithms ?
(f) Define and differentiate between Replica-ton Transparency and Replication Consistency,
(g) What are the four best-known strategies used to handle deadlocks ?
Oh) What are the different types of transparencies In a distributed system ?
PECS 34(WPECS 3402 2 Contd.
0) Whai are the essential features of microkernel ?
(j) Define and differentiate between work* station model and processor pod mode! of distributed system,
2V (a) What is a distributed system ? Write
t'
different types of transparencies in a distributed system, 5
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(b) Explain how the resource replication can be used to enhance distributed system performance and availability ? 5
(a) Define the term Distributed System, What are the significant advantages of distributed PECS 3409/PECS 3402 3 p-m
systems over traditional time-sharing system ? 5
(b) What is RPC communication model ? Explain the implementation of an RPC Mechanism. 5
r
m
p/ (a) Consider a distributed operating system that
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supports process migration. Given a
process's 10 (pj'd), the operating system
must be able to find on which host the
process is currently executing. Describe
how the distributed operating system would
find processes, given a pifi. 5
PECS 3409/PECS 3402 4 Contd,
(b) How can the system security design has an impact on overall system reliability ? How operating system provides protection and access to system resources ? 5
5. (a) Define Markov Process. Explain how Markov Process can be used to model the distributed system ? 5
(b) What is multiprocessor system ? Wha! are the advantages of multiprocessor system ? What is synchronization problem in multiprocessor system ? 5
(a) What is the need of logical clock in distributed system ? Explain the use of PECS 3409/PECS 3402 5 RT-O.
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Lamport's Logical clocks to order the events in a distributed system. 5 (b) What is Distributed File System (DFS) ? What is DFS site discovery ? What is use of distributed fiies-system ? 5 (a) Just because a state is unsafe does not 7, </ h necessarily imply that the system wifi deadlock, Explain why this is true. Give IWL example of an unsafe state and show how all of the processes could complete without a deadlock occurring. 5 (b) Describe the general strategy behind deadlock prevention, and give an example of a |
(fo) What are the two major shortcomings of RPC facilities ? (c) What are the different type of mutual exclusion algorithm in distributed system ? (d) What is meant by Ihe term Vector Timestamp? 2.5x4 |
practical deadlock prevention method. 5 PECS 3409/PECS 3402 6 Contd.
PECS3409/PECS 3402 -C
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Attachment: |
| Earning: Approval pending. |
