DCN PREVIOUS QUESTION PAPERS
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janaki jayakumar
Apr 4, 2012, 10:14:48 AM4/4/12
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2009 B.Sc. (Comp Sci)
DATA COMMUNICATIONS AND NETWORKING
PART A (10x3=30 marks)
Answer any ten
1. Define a protocol.
2. List any three applications of networks
3. Write on the different topologies Tree, Ring and Star.
4. What is a Frame?
5. Define Parallel Transmission
6. What is DCE?
7. What do you mean by Guided Media?
8. Which error detection method is called parity check? Why?
9. Differentiate MUX and DEMUX.
10. What is Circuit Switching.
11. What is a D Channel
12. What is LCN?
PART B(5x8=30 marks)
Answer any five
13. What are the four service classes defined by ATM?
14. Write shortly on Repeaters.
15. Write about TCP and UDP.
16. Write a short note on FTP.
17. What are the three categories of networks?
18. Describe the functions of physical layer.
19. Write in detail about cable modems.
PART C(4x10=40 marks)
Answer any four
20. Explain about FDM process.
21. Explain with example CRC method.
22. Write in detail about packet switching.
23. Write a note on WWW.
24. Discuss about ATM architecture.
25. Explain about gateway.
-------------------------------------------------------------
PART A (10x3=30 marks)
Answer any ten
1. Define a protocol.
2. List any three applications of networks
3. Write on the different topologies Tree, Ring and Star.
4. What is a Frame?
5. Define Parallel Transmission
6. What is DCE?
7. What do you mean by Guided Media?
8. Which error detection method is called parity check? Why?
9. Differentiate MUX and DEMUX.
10. What is Circuit Switching.
11. What is a D Channel
12. What is LCN?
PART B(5x8=30 marks)
Answer any five
13. What are the four service classes defined by ATM?
14. Write shortly on Repeaters.
15. Write about TCP and UDP.
16. Write a short note on FTP.
17. What are the three categories of networks?
18. Describe the functions of physical layer.
19. Write in detail about cable modems.
PART C(4x10=40 marks)
Answer any four
20. Explain about FDM process.
21. Explain with example CRC method.
22. Write in detail about packet switching.
23. Write a note on WWW.
24. Discuss about ATM architecture.
25. Explain about gateway.
-------------------------------------------------------------
APRIL 2009 Maximum: 100 marks
Time 3 hours
PK6A DATA COMMUNICATIONS AND NETWORKING
Part A (10x3 = 30 marks)
Answer any ten
1. What are the components of a data communication system? List them.
2. Distinguish between point to point and multi point connections
3. What is the function of Network Layer?
4. Define Serial Transmission.
5. What is meant by FDM?
6. What are MODEMS?
7. Write a note on Single-bit error.
8. Define Switched Network.
9. What is ISDN?
10. Define ATM.
11. What are Gateways?
12. What is TCP/IP Network?
Part B(5x6=30marks)
Answer any five
13. Discuss about different categories of Network topology.
14. What are the responsibilities of the transport layer? Discuss briefly.
15. Distinguish between Asynchronous and Synchronous Transmissions.
16. Write short notes on Error detection.
17. Discuss briefly about FDDI.
18. Explain about X.25 layers.
19. Write short notes on WWW.
Part C (4x10=40marks)
Answer any four
20. Explain about different categories of computer networks.
21. Describe in detail Unguided Media.
22. Explain about Token Bus and Token Ring.
23. Discuss in detail Connection Oriented and Connectionless services.
24. Explain about ISDN Layers
25. Write short notes on: (a) Bridges (b)ATM protocol
Time 3 hours
PK6A DATA COMMUNICATIONS AND NETWORKING
Part A (10x3 = 30 marks)
Answer any ten
1. What are the components of a data communication system? List them.
2. Distinguish between point to point and multi point connections
3. What is the function of Network Layer?
4. Define Serial Transmission.
5. What is meant by FDM?
6. What are MODEMS?
7. Write a note on Single-bit error.
8. Define Switched Network.
9. What is ISDN?
10. Define ATM.
11. What are Gateways?
12. What is TCP/IP Network?
Part B(5x6=30marks)
Answer any five
13. Discuss about different categories of Network topology.
14. What are the responsibilities of the transport layer? Discuss briefly.
15. Distinguish between Asynchronous and Synchronous Transmissions.
16. Write short notes on Error detection.
17. Discuss briefly about FDDI.
18. Explain about X.25 layers.
19. Write short notes on WWW.
Part C (4x10=40marks)
Answer any four
20. Explain about different categories of computer networks.
21. Describe in detail Unguided Media.
22. Explain about Token Bus and Token Ring.
23. Discuss in detail Connection Oriented and Connectionless services.
24. Explain about ISDN Layers
25. Write short notes on: (a) Bridges (b)ATM protocol
Gnana Priya
May 30, 2012, 6:28:54 AM5/30/12
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HI MAM......WE MISS YOU SOOOOO MUCH...................AND YOUR CLASSES
MAM......LOVE YOU MAM.....TAKE CARE.....
MAM......LOVE YOU MAM.....TAKE CARE.....
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