Unit Test Question Paper

Unit test questions

Data Communications and Computer Networks

Max. Marks: 20

Section-A

 2*5=10 marks

1.   Distinguish between analog and digital transmission.

2.     Explain about infrared and light wave transmission.

3. State the need for data communication networking.

4.     Write any four differences between serial and parallel communication.

5.  Define data communication?

6.     State the need for protocols in computer networks

7.     List the OSI 7 layers.

8. State Shannon capacity theorem?

9.     Briefly explain about serial communication.

10.     What is meant by a computer network

11. What is meant by network topology? Write the names of any three network topologies.

12. define half duplex and full duplex

13. Explain about serial communication

14. Explain about infrared and light wave transmission

15. define LAN, MAN, WAN

16. Define transmission media & list different types of transmission media

Section-B

(In this section answer 2 questions out of 3 questions)

2*5=10

1. Explain UTP, STP, Co-axial cable and fibre optical cable with cross-sectional view.

2.   Explain in detail with diagrams about STAR, BUS, RING, topologies.

3.   (a) define data communications. (b) explain the Shannon capacity and compare the characteristics of various transmission media.

4.   (a) explain the topology and technology of WLAN. (b) explain the Ethernet frame format.

5. Explain about baud, rate, simplex, half duplex and full duplex communication.

6.   Explain Shannon’s capacity and compare the characteristics of various guided media?

7. (a) explain about the cross section and applications of coaxial cable. (b) explain about the cross section and applications of optical fiber.

8   (a) explain about digital data digital signals. (b)explain about digital data analogue signals.

9.  Explain the OSI reference model with a neat sketch indicating the function of each layer.

10.   Compare various transmission media.

11. Explain the following (a) digital data and digital signals. (b) digital data and analog signals

12. write about different guided media and their applications