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VTU Electronics and Communication Engineering (Semester 7)
Computer Communication Networks
June 2015
Computer Communication Networks
June 2015
1 (a)
Mention the layers of TCP/IP protocol suite and give brief explanation of protocols used in the suite.
10 M
1 (b)
Explain usage of existing loops, adaptive technology and discrete multi-tone technique in ADSL.
10 M
2 (a)
Give design of selective repeat ARQ, and explain its working at sender site and receiver site.
10 M
2 (b)
Give frame format of HDLC protocol and explain all fields in the frame.
10 M
3 (a)
Explain working of CSMA/CA with a flow diagram.
10 M
3 (b)
A pure aloha network transmits 200bit frames on a shared channel of 200 kbps. What is the through put i system produces 1000 frames per second?
4 M
3 (c)
Explain the idea of CDMA technique.
6 M
4 (a)
Explain frame format of Ethernet MAC frame.
8 M
4 (b)
Describe topology, implementation and encoding in fast ethernet.
8 M
4 (c)
Give summery of standard Ethernet implementations.
4 M
5 (a)
Describe the three steps involved in finding spanning tree for the following system Fig Q5 (a).
10 M
5 (b)
Discuss the two most common architectures in backbone networks.
10 M
6 (a)
Explain classful addressing classes in IPV4.
10 M
6 (b)
Explain the different fields of IPV4 datagram.
10 M
7 (a)
Explain initialization, sharing and updating in distance vector routing protocol.
10 M
7 (b)
Discuss multicast distance vector routing and its implementation in DVMRP.
10 M
8 (a)
Explain UDP datagram fornat.
4 M
8 (b)
Describe three way hand shaking connection establishment and termination in TCP.
8 M
8 (c)
Mention at least five generic and country domains and explain recursive and iterative resolution.
8 M
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