III EEE-CS2363-Computer-Networks-important-questions-for-unit-1-unit-2-for-may-june-2014 ANNA UNIVERSITY SEMESTER EXAM

1. DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING
CS2363 - COMPUTER NETWORKS - UNIT 1 & UNIT 2
Year/Semester & Branch: III year /VI Semester & B.E EEE
Max. Marks: 100 Time: 3 hrs
PART-A Answer ALL Questions (10x2=20 Marks)
1. What is meant by bit stuffing?
2. What are all techniques is used for Selecting Access point in IEEE 802.11?s
3. How MSAU bypass the circuit in token ring station? Give one Token Ring Diagram with MSAU.
4. What are the responsibilities of network layer?
5. Define Throughput and Latency and write calculation formulae.
6. A network with bandwidth of 10 Mbps can pass only an average of 12,000 frames per
minute with each frame carrying an average of 10,000 bits. What is the throughput of this
Network?
7. What is the purpose of subnetting?
8. Write the layers in OSI reference model and TCP Model.
9. Give the CIDR notation for Class A, B and C.
10. What is IPV6?
PART-B Answer ALL Questions (5x16=80 Marks)
11. (a) What are the techniques used to implement Reliable Transmission?. (16)
OR
11. (b)
(i) What is error detection? Short noted about internet checksum method. (4)
(ii) Give short notes on hardware building blocks. (12)
12. (a) Briefly explain Wireless networks (IEEE 802.11,IEEE 802.16,IEEE 802.15.1 (16)
OR
12. (b)
(i) Write a note on IEEE 802.3 Physical properties and access protocol. (12)
(ii) Give short notes about Bluetooth piconet (802.15.1). (4)
13. (a)
(i) Explain in detail about Internet Control Message Protocol. (6)
(ii) What is the purpose of routing? Explain flooding algorithm for routing the packets in detail. (10)
OR
13. (b) (i) Explain briefly about IEEE 802.5 Token Rings and Token ring maintenance & FDDI. (14)
(ii) What is meant by Clock-Based Framing (SONET)? (2)
14. (a) Explain in detail the dynamic host configuration protocol. (16)
OR
14. (b) (i) Explain briefly about subnetting. (8)
(ii) Give Structure of IPV6 & its header format. (8)
15. (a) Explain the different approaches of framing and encoding in detail. (16)
OR
15. (b) Write short notes on the following routing:
(i) Shortest path routing. (4)
(ii) Flooding. (4)
(iii) Distance vector routing. (4)
(iv) Flow based routing. (4)

2. DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING
CS2363 - COMPUTER NETWORKS - UNIT 1 & UNIT 2
Year/Semester & Branch: III year /VI Semester & B.E EEE
Max. Marks: 100 Time: 3 hrs
PART-A Answer ALL Questions (10x2=20 Marks)
1. What is the role of MSAU in 802.5?
2. What is internetworking?
3. Write short Notes on Layer - Protocol architecture and structure.
4. Differentiate ARP and RARP.
5. Define a standard 802.3 frame format.
6. What are the uses of internetwork routing?
7. Define OSI model and what are the seven layers of OSI Model?
8. What is meant by bit stuffing?
9. Define Subnetting.
10. Show with an examples how encoding can be done using NRZI technique.
PART-B Answer ALL Questions (5x16=80 Marks)
11. (a)
(i) Discuss in detail on cyclic redundancy check with suitable examples. (8)
(ii) How does the network performance measure? (8)
OR
11. (b)
(i) Describe network architecture Layering & protocol in detail. (10)
(ii) Discuss the four basic network topologies and give the advantages and disadvantages of
each type. (6)
12. (a)
(i) Explain briefly about IEEE 802.5 Token Rings and Token ring maintenance & FDDI. (14)
(ii) State the difference between TCP and UDP protocols. (2)
OR
12. (b) Explain briefly about Wi-Fi 802.11. (16)
13. (a) Explain in detail about OSI reference model with neat sketches and its layer operations. (16)
OR
13. (b) Illustrate with a neat sketch, the IPV 4 datagram format. Compare the fields in the main
headers of IPV 4 and IPV 6. (16)
14. (a)
(i) Internet control message protocol. (12)
(ii) Find the class and CIDR notation of each address
(1) 11000001 10000011 00011011 1111 1111
(2) 14.23.120. 8. (4)
OR
14. (b) Compare Address Resolution Protocol and RARP. (16)
15. (a)
(i) What is the function of stop and wait flow control? (8)
(ii)Explain Briefly about Bridges. (8)
OR
15. (b) Explain the different approaches of framing and encoding in detail. (16)
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