DCN - CYCLIC TEST (1)

 

SRI LAKSHMI COLLEGE OF ARTS AND SCIENCE

Bangaram, Thottiyam Post, Kallakurichi Dt – 606 201.

DEPARTMENT OF COMPUTER SCIENCE

MODEL EXAMINATIONS - I

 

Sub.Title : Data Communication and Networks

Class : III B.Sc [CS]                                                             Sub.Code : BCS53 

Time : 1 Hr 30 Minutes                                                       Max. Marks : 40

PART – A

Answer All the questions:                                                               5 x2 = 10                   

1.      Define Hub and Switch.

2.      Write the functions of Physical layer.

3.      Write the expansion of LAN , MAN, PAN and WAN.

4.      What is Ethernet?

5.      Define MAC.

       PART – B

Answer All the Questions:                                                              4 x 5 = 20

6.      (a) Explain about Network hardware.

(Or)

            (b) Give short notes on network architecture with neat diagram.

7.      (a) Write about the design issues of physical layer.

(Or)

            (b) Write about types of Networks.

8.      (a) Write about the design issues of data link layer.

                                    (Or)

(b) Explain about Channel Allocation Problem.

9.      (a) Give short notes on Ethernet.

(Or)

            (b) Explain about 802.11 Architecture.

 

PART – C

Answer Any One of the following Question:                                           1 x 10 = 10

10.  Briefly explain about types of Transmission media.

11.  Explain about Multiple Access Protocols in detail.