Distinguish between udp and tcp, Computer Networking

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Question:

(a) Distinguish between UDP and TCP.

(b) You have been asked to design and implement a chat application for a university. Which protocol could you used TCP or UDP? Justify your answer.

(d) Prepare a sequence diagram showing the exchange of messages among the objects involved in a chat session.

(e) What is a socket? Why sockets are important? Why a port assignment is necessary during the creation of a socket?

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