Data Communication and Computer Networks-1

Code No: 09A50508

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY, HYDERABAD

B. Tech III Year I Semester Examinations, May/June 2013

Data Communication and Computer Networks

(Computer Science and Engineering)

Time: 3 hours Max. Marks: 75

Answer any five questions

All questions carry equal marks

- - -

1.a) What is the difference between a port address, a logical address, and a physical

address?

b) Compare OSI model and TCP/IP protocol suite. [15]

2.a) Define the digital hierarchy used by telephone companies and list different levels

of the hierarchy.

b) Compare and contrast a circuit-switched network and datagram networks. [15]

3.a) Discuss the concept of redundancy in error detection and correction.

b) What are the various multiple access techniques? Compare them. [15]

4.a) How does a VLAN provide extra security for a network?

b) Discuss the functions of each SONET layer.

c) How is an ATM virtual connection identified? [15]

5.a) What are the differences between classful addressing and classless addressing in

IPv4?

b) What are the differences between routing and forwarding?

c) Compare unicast and multicast routing protocols. [15]

6.a) Compare the TCP header and the UDP header. List the fields in the TCP header

that are not present in UDP header. Give the reason for their absence.

b) What is congestion? Explain any one of the congestion control mechanism. [15]

7.a) What are the main categories of DNS messages? Explain.

b) What are the functions of network management? Explain. [15]

8. Write short notes on:

a) Electronic mail

b) Voice over IP

c) HTTP. [15]

* * * * * *

R09

4.a) How does a VLAN provide extr


) How is an ATM virtual connection identified? [15]

5.a) What are the differences between classf


) Compare unicast and multicast routing protocols. [15]

6.a) Compare the TCP header and the UDP head

a circuit-switched network a





connection identified? [15]

4.a) How does a VLAN provide extr


) How is an ATM virtual connection identified? [15]



) Compare unicast and multicast routing protocols. [15]

6.a) Compare the TCP header and the UDP head

a circuit-switched network a





connection identified? [15] ) How is an ATM virtual connection identified? [15]



) Compare unicast and multicast


a security for a network?


twork management? Explain. [15] twork management? Explain. [15] twork management? Explain. [15] twork management? Explain. [15] twork management? Explain. [15] ) What are the functions of ne) What are the functions of ne b) What are the functions of ne

Give the reason for their absence. Give the reason for their absence. Give the reason for their absence. that are not present in UDP header. that are not present in UDP header. that are not present in UDP header. Give the reason for their absence.

tween routing and forwarding? tween routing and forwarding? tween routing and forwarding? tween routing and forwarding? tween routing and forwarding? tween routing and forwarding? b) What are the differences between routing and forwarding? b) What are the differences between routing and forwarding? b) What are the differences between routing and forwarding? b) What are the differences be b) What are the differences be b) What are the differences between routing and forwarding?

ssless addressing in ul addressing and cla5.a) What are the differences between classf5.a) What are the differences between classf5.a) What are the differences between classf5.a) What are the differences between classf5.a) What are the differences between classf

connection identified? [15] connection identified? [15] connection identified? [15] connection identified? [15] connection identified? [15] ) How is an ATM virtual ) How is an ATM virtual c) How is an ATM virtual connection identified? [15]

a security for a network? a security for a network? a security for a network? a security for a network? a security for a network? a security for a network? 4.a) How does a VLAN provide extr

b) What are the various multiple access techniques? Compare them. [15] b) What are the various multiple access techniques? Compare them. [15] b) What are the various multiple access techniques? Compare them. [15] b) What are the various multiple access techniques? Compare them. [15] b) What are the various multiple access techniques? Compare them. [15] b) What are the various multiple access techniques? Compare them. [15] b) What are the various multiple access techniques? Compare them. [15] b) What are the various multiple access techniques? Compare them. [15]

of the hierarchy. of the hierarchy.

address?

All questions carry equal marksAll questions carry equal marksAll questions carry equal marks

Time: 3 hours Max. Marks: 75 Time: 3 hours Max. Marks: 75 Time: 3 hours Max. Marks: 75 Time: 3 hours Max. Marks: 75 Time: 3 hours Max. Marks: 75 Time: 3 hours Max. Marks: 75 Time: 3 hours Max. Marks: 75 Time: 3 hours Max. Marks: 75 Time: 3 hours Max. Marks: 75

B. Tech III Year I Semester Examinations, May/June 2013 B. Tech III Year I Semester Examinations, May/June 2013











CAL UNIVERSITY, HYDERABAD CAL UNIVERSITY, HYDERABAD CAL UNIVERSITY, HYDERABAD CAL UNIVERSITY, HYDERABAD JAWAHARLAL NEHRU TECHNOLOGIJAWAHARLAL NEHRU TECHNOLOGIJAWAHARLAL NEHRU TECHNOLOGIJAWAHARLAL NEHRU TECHNOLOGIJAWAHARLAL NEHRU TECHNOLOGI

R09

twork management? Explain. [15] ) What are the functions of ne

www.jntuworld.com || www.android.jntuworld.com || www.jwjobs.net || www.android.jwjobs.net

www.jntuworld.com || www.jwjobs.net

Data Communication and Computer Networks-1

Documents

Transcript of Data Communication and Computer Networks-1