Data Communication and Computer Networks

Code No: 09A50508

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY, HYDERABAD

B. Tech III Year I Semester Examinations, November/December-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) Draw and explain the functions of various layers in OSI model.

b) What is the result of scrambling the sequence 11100000000000 using B8ZS

scrambling technique? Assume that the last non-zero signal level has been positive.

[10+5]

2.a) Distinguish between Synchronous and Statistical TDM.

b) Briefly explain the characteristics of Guided media. [7+8]

3.a) Calculate CRC, if the message is x7+x

5+1 and the generator polynomial is x

3+1.

b) Explain the concept of Selective Repeat ARQ protocol with a suitable example.

[7+8]

4.a) Write short notes on the various devices used to connect LANs.

b) Explain the layers of SONET. [7+8]

5.a) Explain with an example Distance Vector routing Algorithm.

b) Write briefly about ICMP. [7+8]

6.a) Explain the working of 3-way handshaking used in TCP.

b) Explain the Integrated Services QoS model. [7+8]

7. Explain SMTP and POP3 protocols. [15]

8. Discuss how SIP is used in the transmission of multimedia. [15]

**************

R09


b) Explain the Integrated Serv



3-way handshaking used in TCP.

ices QoS model. [7+8]

[7+8]

4.a) Write short notes on the various devices used to connect LANs.


ce Vector routing Algorith

) Write briefly about ICMP. [7+8]

ics of Guided media. [7+8]

+1 and the generator polynomial is x

peat ARQ protocol with a suitable example.

[7+8]


b) Explain the Integrated Serv





ices QoS model. [7+8]


[7+8]

ed to connect LANs.




4.a) Write short notes on the various devices us

ics of Guided media. [7+8]



[7+8]

8. Discuss how SIP is used in the transmission of multimedia. [15] 8. Discuss how SIP is used in the transmission of multimedia. [15]






[7+8]

4.a) Write short notes on the various devices us



ed to connect LANs.




[7+8]

3-way handshaking used in TCP. 3-way handshaking used in TCP. 3-way handshaking used in TCP. 3-way handshaking used in TCP. 6.a) Explain the working of 6.a) Explain the working of 6.a) Explain the working of

ce Vector routing Algorithce Vector routing Algorithce Vector routing Algorith5.a) Explain with an example Distan

[10+5]

Answer any five questions Answer any five questions

B. Tech III Year I Semester Examinations, November/December-2013

**********************************************************************

3-way handshaking used in TCP. 3-way handshaking used in TCP. 3-way handshaking used in TCP. 3-way handshaking used in TCP. 3-way handshaking used in TCP. 6.a) Explain the working of 6.a) Explain the working of 6.a) Explain the working of 3-way handshaking used in TCP. 3-way handshaking used in TCP. 3-way handshaking used in TCP. 3-way handshaking used in TCP. 3-way handshaking used in TCP. 3-way handshaking used in TCP. 3-way handshaking used in TCP. 3-way handshaking used in TCP. 3-way handshaking used in TCP. 3-way handshaking used in TCP. 3-way handshaking used in TCP. 6.a) Explain the working of 6.a) Explain the working of 6.a) Explain the working of 6.a) Explain the working of 6.a) Explain the working of 6.a) Explain the working of 3-way handshaking used in TCP. 6.a) Explain the working of

m. m. ce Vector routing Algorithm. ce Vector routing Algorithce Vector routing Algorith5.a) Explain with an example Distan5.a) Explain with an example Distan5.a) Explain with an example Distan5.a) Explain with an example Distan m. m. m. m. m. m. ce Vector routing Algorithce Vector routing Algorithce Vector routing Algorithce Vector routing Algorithce Vector routing Algorithce Vector routing Algorithce Vector routing Algorith5.a) Explain with an example Distance Vector routing Algorith5.a) Explain with an example Distan5.a) Explain with an example Distan5.a) Explain with an example Distan5.a) Explain with an example Distan5.a) Explain with an example Distan5.a) Explain with an example Distance Vector routing Algorithce Vector routing Algorith5.a) Explain with an example Distan5.a) Explain with an example Distan5.a) Explain with an example Distan5.a) Explain with an example Distan

+1. +1 and the generator polynomial is x+1 and the generator polynomial is x+1 and the generator polynomial is x+1 and the generator polynomial is x+1 and the generator polynomial is x5+1 and the generator polynomial is x3.a) Calculate CRC, if the message is x3.a) Calculate CRC, if the message is x3.a) Calculate CRC, if the message is x3.a) Calculate CRC, if the message is x +1 and the generator polynomial is x+1 and the generator polynomial is x+1 and the generator polynomial is x+1 and the generator polynomial is x+1 and the generator polynomial is x+1 and the generator polynomial is x+1 and the generator polynomial is x+1 and the generator polynomial is x+1 and the generator polynomial is x3.a) Calculate CRC, if the message is x3.a) Calculate CRC, if the message is x3.a) Calculate CRC, if the message is x3.a) Calculate CRC, if the message is x3.a) Calculate CRC, if the message is x3.a) Calculate CRC, if the message is x3.a) Calculate CRC, if the message is x3.a) Calculate CRC, if the message is x

[10+5] [10+5] [10+5] [10+5] [10+5] [10+5] [10+5] [10+5] [10+5] [10+5] [10+5] [10+5] [10+5] [10+5] [10+5] [10+5] [10+5] [10+5] [10+5] [10+5] [10+5] [10+5] [10+5] [10+5] [10+5] [10+5] [10+5]

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 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 Time: 3 hours Max. Marks: 75

B. Tech III Year I Semester Examinations, November/December-2013 B. Tech III Year I Semester Examinations, November/December-2013 B. Tech III Year I Semester Examinations, November/December-2013 B. Tech III Year I Semester Examinations, November/December-2013 B. Tech III Year I Semester Examinations, November/December-2013 B. Tech III Year I Semester Examinations, November/December-2013 B. Tech III Year I Semester Examinations, November/December-2013 B. Tech III Year I Semester Examinations, November/December-2013 B. Tech III Year I Semester Examinations, November/December-2013 B. Tech III Year I Semester Examinations, November/December-2013 B. Tech III Year I Semester Examinations, November/December-2013 B. Tech III Year I Semester Examinations, November/December-2013 B. Tech III Year I Semester Examinations, November/December-2013 B. Tech III Year I Semester Examinations, November/December-2013 B. Tech III Year I Semester Examinations, November/December-2013 B. Tech III Year I Semester Examinations, November/December-2013 B. Tech III Year I Semester Examinations, November/December-2013 B. Tech III Year I Semester Examinations, November/December-2013 B. Tech III Year I Semester Examinations, November/December-2013 B. Tech III Year I Semester Examinations, November/December-2013 B. Tech III Year I Semester Examinations, November/December-2013 B. Tech III Year I Semester Examinations, November/December-2013 B. Tech III Year I Semester Examinations, November/December-2013 B. Tech III Year I Semester Examinations, November/December-2013


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Data Communication and Computer Networks

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