Enrollment No. ...........

END TERM EXAMINATION

FOURTH SEMESTER (BCA) MAY-JUNE 2014

(Batch 2011)

Solve The Paper

• Q1. (a) Define computer network. Explain different types of networks. 2.5
• (b) What are the connection less and connection oriented services? 2.5
• (c) Differentiate between CAN, MAN and WAN. 2.5
• (d) Differentiate between simplex, half duplex & full duplex transmission modes. 2.5
• (e) How TCP provides reliability in the network. 2.5
• (f) What is the difference between physical & logical address? 2.5
• (g) Discuss UDP datagram format. 2.5
• (h) Why is IP called best effort delivery protocol? 2.5
• (i) Differentiate between Broadcast, Multicast & Unicast. 2.5
• (j) How router boots up. 2.5

UNIT-I

• Q2. (a) Define Shannon Capacity theorem. 2.5
• (b) Differentiate between guided and unguided transmission media. Explain in detail. 10

• Q3.(a) Discuss 4 different topologies in detail with examples. 4
• (b) Compare OSI and TCP/IP models. Discuss different layers & their functions briefly. 8.5

UNIT-II

• Q4. (a) Differentiate between Circuit Switching & Packet Switching. 6
• (b) Discuss ISDN, its services & layers. 6.5

• Q5.(a) Are the flow control & error control mechanism handled at the Data Link Layer? If yes, describe the techniques with which it can be handled. If no, explain with appropriate reasons. 8
• (b) Differentiate between WDM, TDM & FDM. 4.5

UNIT-III

• Q6. (a) Define repeaters, bridges, gateways & routers. 2
• (b) Show the header format for IP,4 & explain the function of each field. 10.5

• Q7.(a) Distinguish between distance vector & link state routing. Explain with examples. 4
• (b) Differentiate between static & dynamic routing. 8.5

UNIT-IV

• Q8. (a) Compare TCP & UDP protocols. 4
• (b) Explain TCP packet format in detail. 8.5

• Q9. (a) What are the functions of session layers, presentation layers & application layers in OSI model? 6
• (b) Explain three way handshaking in TCP. 6.5