Wednesday, May 28, 2014

COMPUTER NETWORKS (CN) DECEMBER 2012 SEMESTER 5

COMPUTER NETWORKS (CN) DECEMBER 2012 SEMESTER 5 

Con. 9854-12                                                                                                 KR-5231

                                                   (3 Hours)                                            [Total Marks :- 100] 

N.B.: (1) Question No.1 is compulsory.
         (2) Attempt any four questions out of remaining six questions.
         (3) Assume suitable data wherever required.

1. (a) Explain the following with example : - [10 Marks]
         (i) Repeater
        (ii) Hubs
       (iii) Bridges
       (iv) Switches
       (v) Router
   (b) Explain the layers details of OSI and TCP/IP Models. [10 Marks]
 
2. (a) Explain the major components of telephone networks. [10 Marks]
    (b) Explain the error detection and error correction algorithms. [10 Marks]

3. (a) What is CRC? Write the algorithm for computing check sum and explain with suitable
          example. [10 Marks]
    (b) Explain the following with examples :- [10 Marks]
          MAC address, IP address, socket, Baud rate, Latency.

4. (a) Differentiate between the following: -[10 Marks]
          (i) Protocol and Interface
         (ii) Connectionless and connection oriented service.
     (b) Explain and compare the following :-
           Ethernet, Token Bus and Token Ring.

5. (a) Explain CSMA/CD. [10 Marks]
    (b) List the features of bluetooth and explain the network formation process. [10 Marks]            

6. (a) Explain : FDMA, TDMA and CDMA. [10 Marks]
    (b) What are different types of routing? Explain distance vector routing. [10 Marks]

7. (a) What are the congestion prevention policies? Explain the congestion control in virtual circuits
          and datagram subnets. [10 Marks]
    (b) Write note on : -SONET. [10 Marks]

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