JNTU Kakinada B-Tech 4-2 DISTRIBUTED SYSTEMS R13 April 2018 Question Paper

IV B.Tech II Semester Regular/Supplementary Examinations, April – 2018
DISTRIBUTED SYSTEMS (Common to Computer Science and Engineering & Information Technology)Time: 3 hours Max. Marks: 70
Question paper consists of Part-A and Part-B
Answer ALL sub questions from Part-A
Answer any THREE questions from Part-B
*****

PART ?A (22 Marks)1. a) What is the purpose of fundamental model? [3]
b) Define group communication. [4]
c) Describe Object Model. [3]
d) Distinguish between processes and threads. [4]
e) Distinguish between Structured versus unstructured peer-to-peer systems. [4]
f) Write the importance of concurrency control in distributed systems. [4]

PART ?B (3×16 = 48 Marks)2. a) State and explain the challenges of distributed systems. [8]
b) Describe hardware service layers in distributed systems. [8]

3. a) Discuss the issues relating to datagram communication. [8]
b) Describe IP Multicast communication. [8]

4. a) Explain the implementation of Remote Method Invocation with a neat sketch. [8]
b) Describe how distributed object are related to distributed system? [8]

5. a) What is the need for protection? Explain various protection mechanisms
supported by operating systems.
[8]
b) Describe the architecture for multi-threaded servers. [8]

6. a) Discuss the Napster and its legacy with respect to distributed file systems. [8]
b) What is the goal of an election algorithm? What are the features required for
election algorithms?
[8]

7. a) Explain the different ways to control concurrency in distributed
transactions? Explain with examples.
[8]
b) What is distributed deadlock? Explain with example. [8]

Code No: RT42051
Set No. 1
R13
1 of 1

IV B.Tech II Semester Regular/Supplementary Examinations, April – 2018
DISTRIBUTED SYSTEMS (Common to Computer Science and Engineering & Information Technology)Time: 3 hours Max. Marks: 70
Question paper consists of Part-A and Part-B
Answer ALL sub questions from Part-A
Answer any THREE questions from Part-B
*****

PART ?A (22 Marks)1. a) What is the purpose of fundamental model? [3]
b) Define group communication. [4]
c) Describe Object Model. [3]
d) Distinguish between processes and threads. [4]
e) Distinguish between Structured versus unstructured peer-to-peer systems. [4]
f) Write the importance of concurrency control in distributed systems. [4]

PART ?B (3×16 = 48 Marks)2. a) State and explain the challenges of distributed systems. [8]
b) Describe hardware service layers in distributed systems. [8]

3. a) Discuss the issues relating to datagram communication. [8]
b) Describe IP Multicast communication. [8]

4. a) Explain the implementation of Remote Method Invocation with a neat sketch. [8]
b) Describe how distributed object are related to distributed system? [8]

5. a) What is the need for protection? Explain various protection mechanisms
supported by operating systems.
[8]
b) Describe the architecture for multi-threaded servers. [8]

6. a) Discuss the Napster and its legacy with respect to distributed file systems. [8]
b) What is the goal of an election algorithm? What are the features required for
election algorithms?
[8]

7. a) Explain the different ways to control concurrency in distributed
transactions? Explain with examples.
[8]
b) What is distributed deadlock? Explain with example. [8]

Code No: RT42051
Set No. 1
R13
1 of 1

IV B.Tech II Semester Regular/Supplementary Examinations, April – 2018
DISTRIBUTED SYSTEMS (Common to Computer Science and Engineering & Information Technology)Time: 3 hours Max. Marks: 70
Question paper consists of Part-A and Part-B
Answer ALL sub questions from Part-A
Answer any THREE questions from Part-B
*****

PART ?A (22 Marks)1. a) List three properties of distributed systems. [4]
b) What is meant by Multicast transmission in Distributed Systems? [3]
c) Define the term ?registry? in Java RMI? [3]
d) How are the performances of threads measured? [4]
e) List the characteristics of file systems. [4]
f) Explain the role of coordinator in distributed transaction. [4]

PART ?B (3×16 = 48 Marks)2. a) Explain distributed system with examples. [8]
b) What are software services provided by distributed systems? Explain about its
software layers.
[8]

3. a) Differentiate TCP stream communication and Client Server Communication. [8]
b) Explain how the Multicast messages provide a useful infrastructure for
constructing distributed systems.
[8]

4. a) Elaborate the term RPC with a neat example. [8]
b) Describe events and its types and explain notifications in the remote invocation. [8]

5. a) Explain how operating system layer support the common middleware. [8]
b) What do you mean by thread synchronization? How to implement this in
multithreaded distributed systems?
[8]

6. a) Write and explain centralized algorithm for implementing mutual exclusion in
distributed systems.
[8]
b) Explain distributed mutual exclusion with suitable algorithms. [8]

7. a) Explain the basic architectural model for the management of Replicated data
with a neat diagram.
[8]
b) How is recovery of two-phase commit protocol done in a distributed
transaction? Explain.
[8]

Code No: RT42051
Set No. 2
R13
1 of 1

IV B.Tech II Semester Regular/Supplementary Examinations, April – 2018
DISTRIBUTED SYSTEMS (Common to Computer Science and Engineering & Information Technology)Time: 3 hours Max. Marks: 70
Question paper consists of Part-A and Part-B
Answer ALL sub questions from Part-A
Answer any THREE questions from Part-B
*****

PART ?A (22 Marks)1. a) What is the purpose of fundamental model? [3]
b) Define group communication. [4]
c) Describe Object Model. [3]
d) Distinguish between processes and threads. [4]
e) Distinguish between Structured versus unstructured peer-to-peer systems. [4]
f) Write the importance of concurrency control in distributed systems. [4]

PART ?B (3×16 = 48 Marks)2. a) State and explain the challenges of distributed systems. [8]
b) Describe hardware service layers in distributed systems. [8]

3. a) Discuss the issues relating to datagram communication. [8]
b) Describe IP Multicast communication. [8]

4. a) Explain the implementation of Remote Method Invocation with a neat sketch. [8]
b) Describe how distributed object are related to distributed system? [8]

5. a) What is the need for protection? Explain various protection mechanisms
supported by operating systems.
[8]
b) Describe the architecture for multi-threaded servers. [8]

6. a) Discuss the Napster and its legacy with respect to distributed file systems. [8]
b) What is the goal of an election algorithm? What are the features required for
election algorithms?
[8]

7. a) Explain the different ways to control concurrency in distributed
transactions? Explain with examples.
[8]
b) What is distributed deadlock? Explain with example. [8]

Code No: RT42051
Set No. 1
R13
1 of 1

IV B.Tech II Semester Regular/Supplementary Examinations, April – 2018
DISTRIBUTED SYSTEMS (Common to Computer Science and Engineering & Information Technology)Time: 3 hours Max. Marks: 70
Question paper consists of Part-A and Part-B
Answer ALL sub questions from Part-A
Answer any THREE questions from Part-B
*****

PART ?A (22 Marks)1. a) List three properties of distributed systems. [4]
b) What is meant by Multicast transmission in Distributed Systems? [3]
c) Define the term ?registry? in Java RMI? [3]
d) How are the performances of threads measured? [4]
e) List the characteristics of file systems. [4]
f) Explain the role of coordinator in distributed transaction. [4]

PART ?B (3×16 = 48 Marks)2. a) Explain distributed system with examples. [8]
b) What are software services provided by distributed systems? Explain about its
software layers.
[8]

3. a) Differentiate TCP stream communication and Client Server Communication. [8]
b) Explain how the Multicast messages provide a useful infrastructure for
constructing distributed systems.
[8]

4. a) Elaborate the term RPC with a neat example. [8]
b) Describe events and its types and explain notifications in the remote invocation. [8]

5. a) Explain how operating system layer support the common middleware. [8]
b) What do you mean by thread synchronization? How to implement this in
multithreaded distributed systems?
[8]

6. a) Write and explain centralized algorithm for implementing mutual exclusion in
distributed systems.
[8]
b) Explain distributed mutual exclusion with suitable algorithms. [8]

7. a) Explain the basic architectural model for the management of Replicated data
with a neat diagram.
[8]
b) How is recovery of two-phase commit protocol done in a distributed
transaction? Explain.
[8]

Code No: RT42051
Set No. 2
R13
1 of 1

IV B.Tech II Semester Regular/Supplementary Examinations, April – 2018
DISTRIBUTED SYSTEMS (Common to Computer Science and Engineering & Information Technology)Time: 3 hours Max. Marks: 70
Question paper consists of Part-A and Part-B
Answer ALL sub questions from Part-A
Answer any THREE questions from Part-B
*****

PART ?A (22 Marks)1. a) Why would you design a system as a distributed system? [4]
b) Write about the characteristics of protocols in a distributed system. [4]
c) Why distributed garbage collection is important? Discuss. [3]
d) What are the pros and cons of user level threads? [4]
e) Write the differences between distributed file system and centralized file
system.
[3]
f) Explain about the requirements for replicated data. [4]

PART ?B (3×16 = 48 Marks)2. a) Explain in detail Architectural models. [10]
b) Explain the concept of resource sharing with client-server communication in
distributed systems.
[6]

3. a) What the characteristics are of inter process communication? Explain. [8]
b) Write short notes on (i) Marshalling (ii) Sockets
[8]

4. a) Differentiate between RMI and Remote procedure call with respect to
distributed systems.
[8]
b) Describe the design implementation of java RMI. [8]

5. a) Discuss important operating systems services that are essential for supporting
the development of concurrent and scalable distributed systems.
[8]
b) Explain how a new process can be created in distributed systems with an
example.
[8]

6. a) What are the main tasks of Routing Overlays? Discuss [8]
b) Explain the distributed file service architecture with a neat sketch. [8]

7. a) Write about distributed deadlocks. How to prevent deadlocks in distributed
Systems.
[8]
b) Write about active and passive replications. [8]
Code No: RT42051
Set No. 3
R13
1 of 1

IV B.Tech II Semester Regular/Supplementary Examinations, April – 2018
DISTRIBUTED SYSTEMS (Common to Computer Science and Engineering & Information Technology)Time: 3 hours Max. Marks: 70
Question paper consists of Part-A and Part-B
Answer ALL sub questions from Part-A
Answer any THREE questions from Part-B
*****

PART ?A (22 Marks)1. a) What is the purpose of fundamental model? [3]
b) Define group communication. [4]
c) Describe Object Model. [3]
d) Distinguish between processes and threads. [4]
e) Distinguish between Structured versus unstructured peer-to-peer systems. [4]
f) Write the importance of concurrency control in distributed systems. [4]

PART ?B (3×16 = 48 Marks)2. a) State and explain the challenges of distributed systems. [8]
b) Describe hardware service layers in distributed systems. [8]

3. a) Discuss the issues relating to datagram communication. [8]
b) Describe IP Multicast communication. [8]

4. a) Explain the implementation of Remote Method Invocation with a neat sketch. [8]
b) Describe how distributed object are related to distributed system? [8]

5. a) What is the need for protection? Explain various protection mechanisms
supported by operating systems.
[8]
b) Describe the architecture for multi-threaded servers. [8]

6. a) Discuss the Napster and its legacy with respect to distributed file systems. [8]
b) What is the goal of an election algorithm? What are the features required for
election algorithms?
[8]

7. a) Explain the different ways to control concurrency in distributed
transactions? Explain with examples.
[8]
b) What is distributed deadlock? Explain with example. [8]

Code No: RT42051
Set No. 1
R13
1 of 1

IV B.Tech II Semester Regular/Supplementary Examinations, April – 2018
DISTRIBUTED SYSTEMS (Common to Computer Science and Engineering & Information Technology)Time: 3 hours Max. Marks: 70
Question paper consists of Part-A and Part-B
Answer ALL sub questions from Part-A
Answer any THREE questions from Part-B
*****

PART ?A (22 Marks)1. a) List three properties of distributed systems. [4]
b) What is meant by Multicast transmission in Distributed Systems? [3]
c) Define the term ?registry? in Java RMI? [3]
d) How are the performances of threads measured? [4]
e) List the characteristics of file systems. [4]
f) Explain the role of coordinator in distributed transaction. [4]

PART ?B (3×16 = 48 Marks)2. a) Explain distributed system with examples. [8]
b) What are software services provided by distributed systems? Explain about its
software layers.
[8]

3. a) Differentiate TCP stream communication and Client Server Communication. [8]
b) Explain how the Multicast messages provide a useful infrastructure for
constructing distributed systems.
[8]

4. a) Elaborate the term RPC with a neat example. [8]
b) Describe events and its types and explain notifications in the remote invocation. [8]

5. a) Explain how operating system layer support the common middleware. [8]
b) What do you mean by thread synchronization? How to implement this in
multithreaded distributed systems?
[8]

6. a) Write and explain centralized algorithm for implementing mutual exclusion in
distributed systems.
[8]
b) Explain distributed mutual exclusion with suitable algorithms. [8]

7. a) Explain the basic architectural model for the management of Replicated data
with a neat diagram.
[8]
b) How is recovery of two-phase commit protocol done in a distributed
transaction? Explain.
[8]

Code No: RT42051
Set No. 2
R13
1 of 1

IV B.Tech II Semester Regular/Supplementary Examinations, April – 2018
DISTRIBUTED SYSTEMS (Common to Computer Science and Engineering & Information Technology)Time: 3 hours Max. Marks: 70
Question paper consists of Part-A and Part-B
Answer ALL sub questions from Part-A
Answer any THREE questions from Part-B
*****

PART ?A (22 Marks)1. a) Why would you design a system as a distributed system? [4]
b) Write about the characteristics of protocols in a distributed system. [4]
c) Why distributed garbage collection is important? Discuss. [3]
d) What are the pros and cons of user level threads? [4]
e) Write the differences between distributed file system and centralized file
system.
[3]
f) Explain about the requirements for replicated data. [4]

PART ?B (3×16 = 48 Marks)2. a) Explain in detail Architectural models. [10]
b) Explain the concept of resource sharing with client-server communication in
distributed systems.
[6]

3. a) What the characteristics are of inter process communication? Explain. [8]
b) Write short notes on (i) Marshalling (ii) Sockets
[8]

4. a) Differentiate between RMI and Remote procedure call with respect to
distributed systems.
[8]
b) Describe the design implementation of java RMI. [8]

5. a) Discuss important operating systems services that are essential for supporting
the development of concurrent and scalable distributed systems.
[8]
b) Explain how a new process can be created in distributed systems with an
example.
[8]

6. a) What are the main tasks of Routing Overlays? Discuss [8]
b) Explain the distributed file service architecture with a neat sketch. [8]

7. a) Write about distributed deadlocks. How to prevent deadlocks in distributed
Systems.
[8]
b) Write about active and passive replications. [8]
Code No: RT42051
Set No. 3
R13
1 of 1

IV B.Tech II Semester Regular/Supplementary Examinations, April – 2018
DISTRIBUTED SYSTEMS (Common to Computer Science and Engineering & Information Technology)Time: 3 hours Max. Marks: 70
Question paper consists of Part-A and Part-B
Answer ALL sub questions from Part-A
Answer any THREE questions from Part-B
*****

PART ?A (22 Marks)1. a) List the design requirements for distributed architectures. [4]
b) What is meant by external data representation? [3]
c) Define the term Remote produce call? Explain. [3]
d) Describe Operating System Layer. [4]
e) Give the requirements of Distributed file system. [4]
f) Draw the transaction system architecture in distributed systems? [4]

PART ?B (3×16 = 48 Marks)2. a) What are different benefits of resource sharing? Explain about its significance. [8]
b) How failures are recovered in distributes system? [8]

3. a) Explain the API for the Internet Protocols. [8]
b) What are characteristics of the TCP stream communication? [8]

4. a) Discuss about the various design issues for remote method invocation. [9]
b) With neat sketch, explain the functional components of distributed object
model.
[7]

5. a) Describe about the operating system address space of threads in a distributed
system.
[8]
b) Explain the architecture of server threads. Give its applications. [8]

6. a) Write the requirements of distributed mutual exclusion. How to implement this
using recart-agarwala algorithm.
[8]
b) Elaborate any three election algorithms. Use diagrams wherever necessary. [8]

7. a) Explain the passive or primary-backup model of replication for fault tolerance. [8]
b) Write rules for connecting of nested transaction. [8]

Code No: RT42051
Set No. 4
R13
1 of 1