University of Madras
Chepauk, Chennai-600 005.
B.Sc Computer Science
SAE6A - APRIL - 2013
PART A - (10 * 2 = 20 marks)
Answer any TEN questions. All questions carry equal marks. Each answer should not exceed 50 words. 1. What do you mean by Data Communication?
2. What is LAN? 3. What is the use of Microwaves? 4. List the various guided media used for transmission. 5. Define Multiplexing. 6. What is circuit switching? 7. Expand ISDN. 8. What is an Analog data? 9. Define Bridge. 10. What is a Gateway? 11.What do you mean by Ring Topology? 12.Define Serial Transmission. PART B - (5 * 5 = 25 marks)
Answer any FIVE questions. All questions carry equal marks. Each answer should not exceed 200 words. 13. Explain the five components of a data communication system.
14. What are the advantages and disadvantages of optical fiber. 15. Write a short note on packet switching. 16. Discuss in short about ATM Topology. 17. Give a short note on World Wide Web. 18. Write a short note on Bus and Star Topology with a neat diagram. 19. Discuss in short Twisted-Pair cable. PART -C (4 * 10 =40)
Answer any FOUR questions. All questions carry equal marks. Each answer should not exceed 500 words. 20. Discuss in detail about OSI Model.
21. Write a detail note on Parallel and Serial Transmission. 22. Explain the Ethernet MAC sublayer with a neat diagram. 23. Write a detail note on ISDN. 24. Discuss TCP/IP in detail. PC6A - NOVEMBER - 2011
PART A - (10 * 3 = 30 marks)
Answer any TEN questions. All questions carry equal marks. Each answer should not exceed 50 words. 1. Define the term ‘Network’
2. What are the four fundamental characteristics of data communication system? 3. What is a protocol? 4. Distinguish between serial and parallel transmission. 5. What are the types of errors? 6. What is the function of MODEM? 7. What are the types of multiplexing? 8. Define: SMDS. 9. What is the function of broadband ISDN? 10. What is the purpose of bridge? 11. Define: WWW 12. List out any three routing algorithms. PART B - (5 * 6 = 30 marks)
Answer any FIVE questions. All questions carry equal marks. Each answer should not exceed 200 words. 13. What are the five components of data communication
system? Explain. 14. Explain about the network topologies. 15. Write the advantage and disadvantages of optical fiber. 16. Write a short note on Ethernet. 17. Explain the components of the telephone system. 18. Write a note on X.25 network. 19. Describe the functions of gateways. PART -C (4 * 10 =40)
Answer any FOUR questions. All questions carry equal marks. Each answer should not exceed 500 words. 20. Compare LAN, WAN and MAN.
21. Discuss about the ISO OSI model. 22. Explain about the error detecting and error correcting codes. 23. Compare circuit, packet and message switching. 22. Write a brief note on token bus and token ring. 23. Discuss the layers of TCP/IP. SAE6A- APRIL - 2011
SECTION A - (10 * 2 = 20 marks) Answer any TEN Questions All Questions carry equal marks. Each answer should not exceed 30 words. 1. What are the goals of a network?
2. What is an interface? 3. What do you mean by bit stuffing? 4. Distinguish between LAN and WAN. 5. What do you understand by flooding? 6. What do you mean by congestion? 7. State any one of the difference between the network service and transport service. 8. What are bridges? 9. Define firewalls and gateways. 10. What are functions of applications layer? 11. What is meant by virtual circuit? 12. Mention the uses of data compression. SECTION B - (5 * 5 = 25 marks) Answer any FIVE questions. All questions carry equal marks. Each answer should not exceed 200 words. 13. Write a note on error detection and correction.
14. Write a short note on Transparent Bridges. 15. Explain the design issues of network layer. 16. Explain briefly the Distance Vector Routing. 17. Explain about Transport Layer Services. 18. Explain how connections are established using three-way handshake. 19. Explain about Electronic mail. SECTION C - (3 * 10 = 30 marks) Answer any THREE questions. All questions carry equal marks. Each answer should not exceed 500 words. 20. Explain the OSI Network architecture specifying the
functions of each layer. 21. Explain the various transmission media for data communication. 22. Write in detail about Transport Service Primitives. 23. Explain in detail any four multiple access protocols. 24. Define adaptive and non-adaptive algorithm. Explain in detail any two routing algorithm. PC6A - NOVEMBER - 2009
PART A - (10 * 3 = 30 marks)
Answer any TEN questions. All questions carry equal marks. Each answer should not exceed 50 words. 1. What is protocol?
2. What is Half-duplex? 3. What is LAN? 4. What is parallel transmission? 5. What is modem? 6. Name any three methods of error detection. 7. What is Multiplexing? 8. What is FDDI? 9. What is ISDN? 10. What are the layers of X.25? 11. What is a ROUTER. 12. What is TCP/IP? PART B - (5 * 6 = 30 marks)
Answer any FIVE questions. All questions carry equal marks. Each answer should not exceed 200 words. 13. What is Line configuration? Explain its types.
14. What are the advantages of optical fiber? Explain. 15. Explain briefly any two types of Mutiplexing. 16. Write a brief note on SMDS. 17. Explain briefly the ATM Service classes. 18. Write a brief note on internet address. 19. Explain the structure of web page. PART C - (4 * 10 = 40 marks)
Answer any FOUR questions. All questions carry equal marks. Each answer should not exceed 500 words. 20. Explain the various classification of Networks.
21. Discuss the modes for propagation of light along optical channel. 22.Explain the packet switching approaches in detail. 23. Explain the architecture of ATM. 22. Explain the Distance Vector routing in detail. 23. Write short notes on: (a) ARP (b) RARP NOVEMBER - 2006
PART A- (10 x 3 = 30 marks)
Answer any TEN questions. All questions carry equal marks. Each answer should not exceed 50 words. 1. What is Data Communication? Name the components of Data Communication system?
2.What is line configuration? 3.What is serial transaction? 4.What is DCE? 5.Expand SMDS. 6.Name the three types of multiplexing. 7.What are B-ISDN services? 8.What is X.25 protocol? 9.Name any two inter networking devices. 10.What is a gate way? 11. Write any three advantages of distributed processing. 12.What is the purpose of repeater? PART B - (5 x 6 = 30 marks)
Answer any FIVE questions. All questions carry equal marks. Each answer should not exceed 200 words. 13.Explain briefly Mesh and Star topology. 14.Explain the three types of transmission modes. 15.What are the advantages of optical fibre? 16.Explain briefly the coaxial cable. 17.Explain the working of circuit switching network. 18.Explain briefly ISDN services. 19.Explain Non adaptive verses Adaptive Routing. PART C - (4 x 10 = 40 marks)
Answer any FOUR questions. All questions carry equal marks. Each answer should not exceed 500 words. 20. Describe the various categories of networks in detail. 21.Explain the different types of modem. 22.Discuss the multiplexing application in detail. 23.Discuss the functions of the ISDN physical layer. 24. Explain the working of link state routing algorithm with an example. 25.Write a detailed note on internet address. |