BCA 404 :DATA COMMUNICATION AND NETWORKS MAY 2011 QUESTION PAPER

                                  IV SEMESTER B.C.A. EXAMINATION MAY  2011
                                                               Y2K7  SCHEME
                                                       COMPUTER SCIENCE
                          BCA 404  : DATA COMMUNICATION AND NETWORKS


Time : 3Hours                                                                            Max.Marsk: 80

Instruction : Answer all sections

SECTION -A

Answer any eight questions.    8 X 3 =24

1.Explain LAN,WAN,MAN

2 .LIst the advantages of Ring topology.

3. Define:

   a)Bandwidth

  b)Amplitude.

  c) Bitrate.




4.Write a note on IP-address.

5.What is Point-to-Point Protocol (PPP).

6. List the Features of CDMA.

7.Write a note on Tunneling.

8.What is open loop and closed loop control ?

9.Define single bit error and burst error .

10.what is piggy backing ?

SECTION-B

11.a) what is Swtiching ?

    b)  Differentiate between circuit,message and packet switching based on their performance and

      Characteristics?                      2 +  12

12.a)With a neat diagram explain  TCP/IP model.

    b) What is multiplexing? Explain FDM and TDM.     7  +  7

13.How error detection and correction done in communication system ?

14.a)Explain Nyquist signalling rate and Shannon channel capacity

     b)Explain Unguided transmission media                               8 + 6

15.a)Explain the characteristics of a bridge.

     b) Explain STOP  and WAIT  ARQ.           4  + 10

16.a) Explain with a neat figure. 802.3 Frame Format.
   
    b) With a neat diagram explain shortest path routing algorithm.        8 + 6