Thursday, September 5, 2013

5BCA3 :COMPUTER NETWORKS -1 JUNE 2008 QUESTION PAPER

                               V SEMESTER B.C.A. EXAMINATION JUNE 2008
                                                      NEW  SCHEME
                                          5 BCA 3: COMPUTER SCIENCE
                                            COMPUTER NETWORKS  - 1


Time : 3Hours                                                                            Max.Marsk: 80

Instruction : Answer all sections

SECTIONS -A

Answer  any eight question .Each question carries 3 marks.         8 X 3 = 24

1. What are the uses of   Computer Networks ?

2.What are the advantages of digital transmissions over analog transmission ?

3.Explain the Error control and Flow Control functions of Data link layer ?



4.Explain Briefly IEEE  802.4 token bus.,

5.What are choke packets ? What are their advantages ?

6.Whar are the applications of Internet ?

7.what is a MODEM ? What are its functions ?

8.Mention the advantages of satellite communication .

9.Explain Hamming Distance.

10.What are Routers. ? what are their functions ?

SECTION -B

Answer any four questions. Each question carries fourteen marks    4 X 14 = 56

11.a) Compare OSI  reference model with TCP/IP model ?use diagram wherever required .

      b) Explain LAN, WAN  and  MAN in detail.      7 + 7

12.a) Explain the concept of one bit sliding windwo protocol.

    b)Explain Manchester and differential Manchester encoding schemes with the help of examples

                                                                                                                             7 + 7

13.a) Explain and Differentiate point to point  and broadcast networks.

      b) Explain the classification of routing with any one routing algorithm.       8 + 6

14.a) Explain and differentiate circuit switching and packet switching

     b) Explain the classification of routing with any one routing algorithm.         8 + 6

15.a)Define persistent an non-persistent CSMA protocols.
 
     b) Write a short note  on Ethernet.         8  +  6

16.Write short notes on the following .

     a) Computer communication through fibre  optics.


     b)  FDM

     c) E - mail                                                                                          4 + 6 + 4



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