STUPIDSID
VTU Electronics and Communication Engineering (Semester 7)
Computer Communication Networks
June 2014
Computer Communication Networks
June 2014
1 (a)
Describe the layer presentation in the TCP/IP model and explain the protocol of each layer.
8 M
1 (b)
What is ADSL? Explain the operation of ADSL using discrete multi one tone modulation with a neat diagram.
8 M
1 (c)
List diagram types of addressing. Explain any one type of addressing with suitable examples.
4 M
2 (a)
What is framing? Explain bit stuffing with a help of a diagram.
5 M
2 (b)
With neat diagram, explain HDLC frame format.
5 M
2 (c)
Explain stop and wait automatic repeat request for noisy channel.
8 M
2 (d)
Perform bit stuffing on the given bit stream
000111111100111110100 assume flag as 01111110.
000111111100111110100 assume flag as 01111110.
2 M
3 (a)
A pure ALOHA network transmits 200 bit frames on a shared channel of 200kbps. What is the throughput if system produces: i) 1000 frames per second: ii) 500 frames per second.
4 M
3 (b)
Explain 1-persistent, non-persistent and p-persistent with flow diagram.
6 M
3 (c)
With suitable diagram and example CDMA.
6 M
3 (d)
Explain polling as a controlled access technique.
4 M
4 (a)
Explain frame format of 802.3 MAC frame.
6 M
4 (b)
Define the type of the following destination address and justify answer:
i) 4A:30:10:21:10:1A
ii)47:20:1B:2E:08:EE
i) 4A:30:10:21:10:1A
ii)47:20:1B:2E:08:EE
4 M
4 (c)
Explain bridge Ethernet, switched Ethernet, full duplex Ethernet.
10 M
5 (a)
Explain what is loop problem and solution for a loop problem in a bridge with suitable examples and diagams.
10 M
5 (b)
Explain bus backbone and star backbone networks.
6 M
5 (c)
What is VLAN? Explain briefly?
4 M
6 (a)
What is NAT? Explain how NAT help in address depletion.
5 M
6 (b)
Explain IPV4 datagram.
5 M
6 (c)
An ISP granted a block of addressing with 190.100.0.0/16. The ISP needs to distributed these address to three groups of customer as follows:
i) First group has 64- customer each with 256 addresses.
ii) Second group has 128 customer each with 128 addresses.
i) First group has 64- customer each with 256 addresses.
ii) Second group has 128 customer each with 128 addresses.
5 M
6 (d)
Explain class full addressing for IP address.
5 M
7 (a)
With suitable diagram explain distance vector routing.
10 M
7 (b)
Explain different solution to two-node instability.
5 M
7 (c)
Explain source-based tree and group shared based tree.
5 M
8 (a)
Describe a TCP connection establishment using three way handshake.
10 M
8 (b)
Explain TCP and UDP datagram.
10 M
More question papers from Computer Communication Networks