JNTU Kakinada B-Tech 3-2 RT32053 I COMPUTER NETWORKS R13 April 2018 Question Paper

Code No: RT32053
III B. Tech II Semester Regular Examinations, Feb-2018
COMPUTER NETWORKS (Common to CSE and IT)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B) 2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a)Write about connection oriented service-reliable communication
[4M]
b)Explain circuit switching technology implementation in Telephone networks.
[3M]
c)With suitable example explain internet checksum.
[4M]
d)How to route the packets in virtual circuit subnets?
[4M]
e)Describe various access methods in standard Ethernet.
[4M]
f)What is URL? How it will be processed? Explain.
[3M]
PART ?B
2 a) Give the structure and working principle of WAN with virtual private
networks and Internet Service Provider. And also explain its role in Internet. [8M]
b) Write about peer-to-peer processes and encapsulation concepts in OSI model. [8M]
3 a) Describe the functional differences between statistical and synchronous time
division multiplexing.
[8M]
b)With four switches draw the architecture of datagram networks and explain
the data transfer between nodes.
[8M]
4 a) Show the generation of codeword at the sender site and check the same at the
receiver site using CRC where data word is 1010011010 and the deviser is
10111. [8M]
b)?In Selective Repeat ARQ, the size of the sender and receiver window must
be at most one-half of 2
m?
justify the statement.
[8M]
5 a)With example explain routing process in hierarchical routing.
[8M]
b)Explain all variations of ?sense before transmit? methods used in multiple
access.
[8M]
6 a) What are the addressing mechanisms followed in IEEE802.11. How it solves
hidden station and exposed station problem.
[8M]
b)Explain the MAC sub layer and physical layer specifications in high speed
LAN.
[8M]
7
Explain the following with respect to HTTP
a
Operational Model
[6M]
b
Request message format
[5M]
c
Reply message format.
[5M]
1 of 1
R13
SET – 1

Code No: RT32053
III B. Tech II Semester Regular Examinations, Feb-2018
COMPUTER NETWORKS (Common to CSE and IT)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B) 2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a)Write about connection oriented service-reliable communication
[4M]
b)Explain circuit switching technology implementation in Telephone networks.
[3M]
c)With suitable example explain internet checksum.
[4M]
d)How to route the packets in virtual circuit subnets?
[4M]
e)Describe various access methods in standard Ethernet.
[4M]
f)What is URL? How it will be processed? Explain.
[3M]
PART ?B
2 a) Give the structure and working principle of WAN with virtual private
networks and Internet Service Provider. And also explain its role in Internet. [8M]
b) Write about peer-to-peer processes and encapsulation concepts in OSI model. [8M]
3 a) Describe the functional differences between statistical and synchronous time
division multiplexing.
[8M]
b)With four switches draw the architecture of datagram networks and explain
the data transfer between nodes.
[8M]
4 a) Show the generation of codeword at the sender site and check the same at the
receiver site using CRC where data word is 1010011010 and the deviser is
10111. [8M]
b)?In Selective Repeat ARQ, the size of the sender and receiver window must
be at most one-half of 2
m?
justify the statement.
[8M]
5 a)With example explain routing process in hierarchical routing.
[8M]
b)Explain all variations of ?sense before transmit? methods used in multiple
access.
[8M]
6 a) What are the addressing mechanisms followed in IEEE802.11. How it solves
hidden station and exposed station problem.
[8M]
b)Explain the MAC sub layer and physical layer specifications in high speed
LAN.
[8M]
7
Explain the following with respect to HTTP
a
Operational Model
[6M]
b
Request message format
[5M]
c
Reply message format.
[5M]
1 of 1
R13
SET – 1

Code No: RT32053
III B. Tech II Semester Regular Examinations, Feb-2018
COMPUTER NETWORKS (Common to CSE and IT)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B)2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a)Write the characteristics of Wide Area Networks.
[3M]
b)What are the design issues of physical layer?
[4M]
c) Differentiate the process of error correction and error detection in block
coding. [4M]
d)Write about the vulnerable time period in slotted ALOHA protocol.
[4M]
e)With an example explain variations of Manchester encoding.
[4M]
f)Explain the architecture of browser- server.
[3M]
PART ?B
2 a) Differentiate services, mechanisms and interfaces with respect to OSI and
TCP/IP protocol suits. [8M]
b)What is network hardware? Explain in detail with respect to transmission
technology and scale of networks.
[8M]
3 a) What is the difference between the routing process in datagram networks and
in virtual circuit networks? Explain
[8M]
b)Write about the multiplexing and de-multiplexing process in frequency
division multiplexing
[8M]
4 a)What is sliding window? How it is used in noisy channels for error control.
[8M]
b)Write the sender site and receiver site algorithm for simplest protocol and stop
and wait protocols.
[8M]
5 a)Explain the optimality principle with respect to shortest path algorithm
[8M]
b)What is channelization? Explain any two channelization techniques.
[8M]
6 a) Describe the architecture and physical layer specifications of f IEEE802.11
standard. [8M]
b)Write the differences between bridged Ethernet, switched Ethernet and full
duplex Ethernet.
[8M]
7 a)In detail write about WAP protocol implementation for wireless Web.
[8M]
b) With neat sketch explain the formats of generic messages in HTTP. How
security is provided for HTTP messages.
[8M]

1 of 1
R13
SET – 2

Code No: RT32053
III B. Tech II Semester Regular Examinations, Feb-2018
COMPUTER NETWORKS (Common to CSE and IT)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B) 2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a)Write about connection oriented service-reliable communication
[4M]
b)Explain circuit switching technology implementation in Telephone networks.
[3M]
c)With suitable example explain internet checksum.
[4M]
d)How to route the packets in virtual circuit subnets?
[4M]
e)Describe various access methods in standard Ethernet.
[4M]
f)What is URL? How it will be processed? Explain.
[3M]
PART ?B
2 a) Give the structure and working principle of WAN with virtual private
networks and Internet Service Provider. And also explain its role in Internet. [8M]
b) Write about peer-to-peer processes and encapsulation concepts in OSI model. [8M]
3 a) Describe the functional differences between statistical and synchronous time
division multiplexing.
[8M]
b)With four switches draw the architecture of datagram networks and explain
the data transfer between nodes.
[8M]
4 a) Show the generation of codeword at the sender site and check the same at the
receiver site using CRC where data word is 1010011010 and the deviser is
10111. [8M]
b)?In Selective Repeat ARQ, the size of the sender and receiver window must
be at most one-half of 2
m?
justify the statement.
[8M]
5 a)With example explain routing process in hierarchical routing.
[8M]
b)Explain all variations of ?sense before transmit? methods used in multiple
access.
[8M]
6 a) What are the addressing mechanisms followed in IEEE802.11. How it solves
hidden station and exposed station problem.
[8M]
b)Explain the MAC sub layer and physical layer specifications in high speed
LAN.
[8M]
7
Explain the following with respect to HTTP
a
Operational Model
[6M]
b
Request message format
[5M]
c
Reply message format.
[5M]
1 of 1
R13
SET – 1

Code No: RT32053
III B. Tech II Semester Regular Examinations, Feb-2018
COMPUTER NETWORKS (Common to CSE and IT)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B)2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a)Write the characteristics of Wide Area Networks.
[3M]
b)What are the design issues of physical layer?
[4M]
c) Differentiate the process of error correction and error detection in block
coding. [4M]
d)Write about the vulnerable time period in slotted ALOHA protocol.
[4M]
e)With an example explain variations of Manchester encoding.
[4M]
f)Explain the architecture of browser- server.
[3M]
PART ?B
2 a) Differentiate services, mechanisms and interfaces with respect to OSI and
TCP/IP protocol suits. [8M]
b)What is network hardware? Explain in detail with respect to transmission
technology and scale of networks.
[8M]
3 a) What is the difference between the routing process in datagram networks and
in virtual circuit networks? Explain
[8M]
b)Write about the multiplexing and de-multiplexing process in frequency
division multiplexing
[8M]
4 a)What is sliding window? How it is used in noisy channels for error control.
[8M]
b)Write the sender site and receiver site algorithm for simplest protocol and stop
and wait protocols.
[8M]
5 a)Explain the optimality principle with respect to shortest path algorithm
[8M]
b)What is channelization? Explain any two channelization techniques.
[8M]
6 a) Describe the architecture and physical layer specifications of f IEEE802.11
standard. [8M]
b)Write the differences between bridged Ethernet, switched Ethernet and full
duplex Ethernet.
[8M]
7 a)In detail write about WAP protocol implementation for wireless Web.
[8M]
b) With neat sketch explain the formats of generic messages in HTTP. How
security is provided for HTTP messages.
[8M]

1 of 1
R13
SET – 2

Code No: RT32053
III B. Tech II Semester Regular Examinations, Feb-2018
COMPUTER NETWORKS (Comm to CSE and IT)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B)2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a)Write about the original ARPANET design.
[3M]
b)Write short notes on frame synchronization in TDM.
[4M]
c)Differentiate character oriented and bit oriented protocols.
[4M]
d)Write a short notes on persistence methods
[4M]
e)Discuss the addressing mechanisms of wireless LANs.
[4M]
f)What is proxy server? How it is related to HTTP.
[3M]
PART ?B
2 a) Differentiate the following with respect to OSI Layers functionality
i) Logical Address ii) Physical Address iii) Service Point address [8M]
b)Describe different types of networks we encounter in the world today. And also
differentiate point-to-point WAN and switched WAN.
[8M]
3 a)What are different multiplexing techniques used for analog signals? Explain.
[8M]
b)Write the characteristics of virtual circuit networks and explain source to
destination data transfer in it.
[8M]
4 a) Show that the maximum window size in selective repeat is 2
n
/2 and go-back-n
is 2
n
-1, where n is the number of bits used for fame sequence number. [8M]
b)How to determine the type of the frame in HDLC protocol? Explain with frame
format.
[8M]
5 a) What is random access? Explain how it can be achieved with pure ALOHA
and slotted ALOHA.
[8M]
b)How to solve the problem of gigantic forwarding tables? Propose and explain
some routing algorithms.
[8M]
6 a) Explain frame format, addressing mechanisms and access methods in standard
Ethernet. [8M]
b)How to use handshaking mechanism to prevent hidden station and exposed
station problem. Explain.
[8M]
7 a)Differentiate static, dynamic and active documents used in World Wide Web.
[8M]
b)Explain various status codes used in HTTP protocol.
[8M]
1 of 1

R13
SET – 3

Code No: RT32053
III B. Tech II Semester Regular Examinations, Feb-2018
COMPUTER NETWORKS (Common to CSE and IT)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B) 2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a)Write about connection oriented service-reliable communication
[4M]
b)Explain circuit switching technology implementation in Telephone networks.
[3M]
c)With suitable example explain internet checksum.
[4M]
d)How to route the packets in virtual circuit subnets?
[4M]
e)Describe various access methods in standard Ethernet.
[4M]
f)What is URL? How it will be processed? Explain.
[3M]
PART ?B
2 a) Give the structure and working principle of WAN with virtual private
networks and Internet Service Provider. And also explain its role in Internet. [8M]
b) Write about peer-to-peer processes and encapsulation concepts in OSI model. [8M]
3 a) Describe the functional differences between statistical and synchronous time
division multiplexing.
[8M]
b)With four switches draw the architecture of datagram networks and explain
the data transfer between nodes.
[8M]
4 a) Show the generation of codeword at the sender site and check the same at the
receiver site using CRC where data word is 1010011010 and the deviser is
10111. [8M]
b)?In Selective Repeat ARQ, the size of the sender and receiver window must
be at most one-half of 2
m?
justify the statement.
[8M]
5 a)With example explain routing process in hierarchical routing.
[8M]
b)Explain all variations of ?sense before transmit? methods used in multiple
access.
[8M]
6 a) What are the addressing mechanisms followed in IEEE802.11. How it solves
hidden station and exposed station problem.
[8M]
b)Explain the MAC sub layer and physical layer specifications in high speed
LAN.
[8M]
7
Explain the following with respect to HTTP
a
Operational Model
[6M]
b
Request message format
[5M]
c
Reply message format.
[5M]
1 of 1
R13
SET – 1

Code No: RT32053
III B. Tech II Semester Regular Examinations, Feb-2018
COMPUTER NETWORKS (Common to CSE and IT)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B)2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a)Write the characteristics of Wide Area Networks.
[3M]
b)What are the design issues of physical layer?
[4M]
c) Differentiate the process of error correction and error detection in block
coding. [4M]
d)Write about the vulnerable time period in slotted ALOHA protocol.
[4M]
e)With an example explain variations of Manchester encoding.
[4M]
f)Explain the architecture of browser- server.
[3M]
PART ?B
2 a) Differentiate services, mechanisms and interfaces with respect to OSI and
TCP/IP protocol suits. [8M]
b)What is network hardware? Explain in detail with respect to transmission
technology and scale of networks.
[8M]
3 a) What is the difference between the routing process in datagram networks and
in virtual circuit networks? Explain
[8M]
b)Write about the multiplexing and de-multiplexing process in frequency
division multiplexing
[8M]
4 a)What is sliding window? How it is used in noisy channels for error control.
[8M]
b)Write the sender site and receiver site algorithm for simplest protocol and stop
and wait protocols.
[8M]
5 a)Explain the optimality principle with respect to shortest path algorithm
[8M]
b)What is channelization? Explain any two channelization techniques.
[8M]
6 a) Describe the architecture and physical layer specifications of f IEEE802.11
standard. [8M]
b)Write the differences between bridged Ethernet, switched Ethernet and full
duplex Ethernet.
[8M]
7 a)In detail write about WAP protocol implementation for wireless Web.
[8M]
b) With neat sketch explain the formats of generic messages in HTTP. How
security is provided for HTTP messages.
[8M]

1 of 1
R13
SET – 2

Code No: RT32053
III B. Tech II Semester Regular Examinations, Feb-2018
COMPUTER NETWORKS (Comm to CSE and IT)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B)2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a)Write about the original ARPANET design.
[3M]
b)Write short notes on frame synchronization in TDM.
[4M]
c)Differentiate character oriented and bit oriented protocols.
[4M]
d)Write a short notes on persistence methods
[4M]
e)Discuss the addressing mechanisms of wireless LANs.
[4M]
f)What is proxy server? How it is related to HTTP.
[3M]
PART ?B
2 a) Differentiate the following with respect to OSI Layers functionality
i) Logical Address ii) Physical Address iii) Service Point address [8M]
b)Describe different types of networks we encounter in the world today. And also
differentiate point-to-point WAN and switched WAN.
[8M]
3 a)What are different multiplexing techniques used for analog signals? Explain.
[8M]
b)Write the characteristics of virtual circuit networks and explain source to
destination data transfer in it.
[8M]
4 a) Show that the maximum window size in selective repeat is 2
n
/2 and go-back-n
is 2
n
-1, where n is the number of bits used for fame sequence number. [8M]
b)How to determine the type of the frame in HDLC protocol? Explain with frame
format.
[8M]
5 a) What is random access? Explain how it can be achieved with pure ALOHA
and slotted ALOHA.
[8M]
b)How to solve the problem of gigantic forwarding tables? Propose and explain
some routing algorithms.
[8M]
6 a) Explain frame format, addressing mechanisms and access methods in standard
Ethernet. [8M]
b)How to use handshaking mechanism to prevent hidden station and exposed
station problem. Explain.
[8M]
7 a)Differentiate static, dynamic and active documents used in World Wide Web.
[8M]
b)Explain various status codes used in HTTP protocol.
[8M]
1 of 1

R13
SET – 3

Code No: RT32053
III B. Tech II Semester Regular Examinations, Feb-2018
COMPUTER NETWORKS (Comm to CSE and IT)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B)2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a)Describe store and forward networks.
[3M]
b) What is the role of routing table in datagram networks? [4M]
c)How to achieve flow control and error control in data link layer.
[4M]
d)What is the role of coding theory in code division multiplexing technique?
[4M]
e) Differentiate basic service set and extended service set. [4M]
f) Write about various components of URL. [3M]
PART ?B
2 a) With neat sketch discuss the functionalities of each layer in TCP/IP protocol
suite. [8M]
b)Write short notes on the Novel Netware architecture. How it helps in internet
evolution?
[8M]
3 a) What is virtual circuit identifier? How it is used in setup and tear down phases.
Explain with suitable example.
[8M]
b)Explain how wavelength division multiplexing works. What are its advantages
over other methods?
[8M]
4 a)Explain the design and implementation of stop and wait protocol.
[8M]
b) Write about services, framing and multiplexing concepts of Point-Point
Protocol.
[8M]
5 a)Discuss the following: i) Broadcast Routing ii) Multicast Routing.
[8M]
b)What is multiple access control? Explain various protocols used to implement
this.
[8M]
6 a) Describe the architecture, MAC sub layer, addressing mechanisms of wireless
LANs [8M]
b)Write the physical layer specifications of fast Ethernet. How they are different
from standard Ethernet.
[8M]
7 a) Describe the operational model of HTTP protocol. Relate this with WWW and
FTP.
[8M]
b)How to access information over a mobile through WAP? Explain its protocol
design.
[8M]

1 of 1
1 of 1
R13
SET – 4