Bharathiar University 2009-6th Sem B.C.A Computer Application Bachelor of , - - Computer Networks - Question Paper

Bachelor of Computer Application (BCA), APR - 2009

Computer Networks (Sem 6)


1. _____________ have a single communication channel that is shared by all the machines on the network.
a. Broadcast links
b. Point-to-Point links
c. Internet
d. None of the above
1.0 Mark(s)
2. Short range wireless networks are called
a. Wireless LANs
b. Blue tooth
c. Wireless WANs
d. None of the above
1.0 Mark(s)
3. In telephone network, _____________ is the loss of energy as the signal propagates outwards.
a. Distortion
b. Noise
c. Attenuation
d. None of the above
1.0 Mark(s)
4. In a network, a connection that allows traffic either way, but only 1 way at a time is called _____________.
a. Half duplex
b. Full duplex
c. Simplex
d. None of the above
1.0 Mark(s)
5. _____________ is analogous to byte stuffing in which an escape byte is stuffed into the outgoing character stream before a flag byte in the data.
a. Character stuffing
b. Bit stuffing
c. String stuffing
d. None of the above
1.0 Mark(s)
6. CSMA stands for _____________.
a. Control System Medium Access
b. Common Sense Medium Access
c. Carrier Sense Multiple Access
d. None of the above
1.0 Mark(s)
7. In network, the packets are frequently called as ______________.
a. datagrams
b. containers
c. functions
d. none of the above
1.0 Mark(s)
8. ______________ algorithms change their routing decisions to reflect modifications in the topology, and usually the traffic as well.
a. Non-adaptive
b. Adaptive
c. Pre-emptive
d. None of the above
1.0 Mark(s)
9. ______________ refers to the process of creating messages and answers.
a. Displaying
b. Disposition
c. Composition
d. None of the above
1.0 Mark(s)
10. MIME stands for
a. Multipurpose Internet Mail Extensions
b. Minimum Index Mail Extensions
c. Multipurpose Index Minimum Extensions
d. None of the above
1.0 Mark(s)

11. a. discuss the 2 kinds of transmission technology.

Or

b. elaborate the 5 service primitives for implementing a simple connection oriented service? discuss.
5.0 Mark(s)

12. a. Write short notes on MODEM.

Or

b. discuss briefly about geostationary satellites.
5.0 Mark(s)

13. a. discuss the procedure for bit stuffing with an example.

Or

b. elaborate the key assumptions made in dynamic channel allocation in LANs?
5.0 Mark(s)

14. a. discuss about store-and-forward packet switching.

Or

b. Write short notes on routing for mobile hosts.
5.0 Mark(s)

15. a. State the 5 basic functions supported by e-mail system and discuss.

Or

b. discuss briefly the 2 fundamental principles of cryptography.
5.0 Mark(s)

16. a. discuss the functions of different layers in OSI reference model.

Or

b. discuss the different uses of computer networks.
8.0 Mark(s)

17. a. discuss the different guided transmission media used in computer networks.

Or

b. discuss in detail, the structure of the telephone system.
8.0 Mark(s)

18. a. discuss with examples, fault detecting and correcting codes.

Or

b. discuss in detail on pure ALOHA system.
8.0 Mark(s)

19. a. discuss with an example, Dijkstra's shortest path routing algorithm.

Or

b. discuss the 3 protocol scenarios for establishing a connection using a three-way handshake.
8.0 Mark(s)

20. a. discuss in detail in MIME.

Or

b. discuss in detail on digital signatures.
8.0 Mark(s)

Earning:   Approval pending.