5BCA-3:COMPUTER NETWORKS-1 OCT/NOV 2011 QUESTION PAPER

                               V SEMESTER B.C.A. EXAMINATION OCT/NOV  2011
                                                               OLD  SCHEME
                                                       COMPUTER SCIENCE
                                         5BCA - 3  : COMPUTER  NETWORKS - 1


Time : 3Hours                                                                            Max.Marsk: 80

Instruction : Answer all sections

SECTION-A

Amswer amu eight questions of the following  :    8X3=24

1.Differentiate LAN,WAN and  MAN ?

2.What are co-axial cable ?

3.State the different compression techniques.




4.What are the primitives for a simple transport services ?

5.What are the services provided by data link layer  ?

6.Explain congestion Control.

7.Difference between adaptive and non adaptive routing ?

8.Explain directory services.

9.Explain multiplexing.

10.Explain the implementation issues of RPC.

SECTION -B    

Answer any four  full question of the following     4 X 14 = 56

11.a) Explain common network topologies.

    b) List advantages of voice and non voice services.     7 + 7

12.a) Describe the different errror  detection methods.
 
      b) Compare various LAN standards.            8 + 6

13.  a) Explain different methods of Switching.

     b) Explain   CSMA/CD.        7 + 7
 
14. a)Explain shortest path routing  algorithms.

      b)write a note on firewall.     7+ 7

15.a)Explain any two framing techniques.

     b)Explain CRC.      7  +  7

16. Write  short notes :

     a) E-Mail

    b)Pure  ALOHA and slotted  ALOHA.

    C)Flow control and buffering        4 + 4 + 6