Internet technologies

Internet technologies
Provide short, fully referenced, answers to the following six questions. Your answers should be clear, concise and to the point.
Question 1: The address depletion of IPv4 and other shortcomings of this protocol prompted a new version of IP known as IPv6. Explain the advantages of this new IPv6 when compared to IPv4? [3 Marks]

Question 2: Migrating from IPv4 to IPv6 is known as transition from version 4 to version 6 and requires formal strategies to handle this transition. Explain each of the strategies for this migration process using appropriate examples. [4 Marks]

Question 3: In a peer-to-peer (P2P) network, Internet users that are ready to share their resources become peers and form a network. Describe the differences between centralised and decentralised P2P networks? Discuss the advantages and disadvantages of both networks. [3 Marks]

Question 4: What is a Distributed Hash Table (DHT) and how is it used in P2P networks? Briefly explain how a DHT works with an example of a P2P network. [3 Marks]

Question 5: In the client-server paradigm, explain which entity provides the service and which entity receives the service. Why should a server be run all the time, but a client can be run when it is needed? [3 Marks]

Question 6: When an HTTP server receives a request message from an HTTP client, how does the server know when all headers have arrived and the body of the message is to follow? [4 Marks]

Rationale
This assessment consists of six questions assessing a basic understanding of network & data communication models, next generation IP and application layer paradigm. This assessment covers the following learning objectives:

define and explain various Internet technologies;
describe and analyse the role and importance of Internet technologies in the modern world; and
explain how different application layer services such as client-server and peer-to-peer paradigms work in the Internet.

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