Computer Networks
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Question Four |
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Assignment 3
Deadline: Friday 29/11/2019 @ 23:59
[Total Mark for this Assignment are 6]
Computer Networks
IT210
College of Computing and Informatics
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Question One
2 Marks
Learning Outcome(s):
Demonstrate protocol configuration, network-addressing schemes and analyze packet transmission.
Analyze & design Local and Wide Area Networks.
Distance–Vector Routing: In the figure below, there is an SEU network with 5 nodes. These nodes can be considered as 5 different servers associated with 5 departments. The network is configured in a way that the associated cost is mentioned for each interface.
The table for CS department’s server is given below:
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Destination |
Cost |
Next hop |
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Management |
21 |
Management |
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Law |
Infinity |
_____ |
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Health |
15 |
Health |
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IT |
Infinity |
_____ |
a. Fill up the below routing table for IT department after 1st iteration of algorithm.
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Destination |
Cost |
Next hop |
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CS |
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Management |
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Law |
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Health |
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b. Fill up the below routing table for IT department after 2nd iteration of algorithm.
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Destination |
Cost |
Next hop |
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CS |
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Management |
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LAW |
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Health |
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Question Two
2 Marks
Learning Outcome(s):
Demonstrate protocol configuration, network-addressing schemes and analyze packet transmission.
The following is a UDP header in hexadecimal form:
BC84 000D 001C 001C
1. What is the source port number (in decimal)?
1. What is the destination port number (in decimal)?
1. What is the total length of the user datagram (in Bytes)?
1. What is the length of the data (in Bytes)?
Question Three
1.5 Marks
Learning Outcome(s):
Illustrate network protocols including Transport Control Protocol / Internet Protocol.
The following table includes some of the transport-layer protocols. Fill-in each blank cell in the table below.
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Simple Protocol |
Stop-and-Wait |
Go-Back-N |
Selective-Repeat |
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Unidirectional or Bidirectional Protocol? |
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Unidirectional |
Unidirectional |
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Type of services: connectionless or connection-oriented? |
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Connection-oriented |
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Connection-oriented |
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Maximum send window size and Maximum receive window size? |
Not Applicable |
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Max send window size: 2m - 1
Max receive window size: 1 |
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Question Four
0.5 Marks
Learning Outcome(s):
Explain networking principles, models and technologies.
A transport-layer protocol provides two types of services: connectionless and connection-oriented. Define both of these services in your own words.