Packet Communication [10 points] Assume person A wants to communicate to person B. Person A wants…

Packet Communication [10 points]

Assume person A wants to communicate to person B. Person A wants to send their friend list to B. Their friend list has first name, last name, phone number, and email. They want to send this information as a string formatted as XML. Person A only has two friends: Jacob Tutu, 514-123-4567, jt@hotmail.com; and Margret Thatcher, 1-001-234-5678, magpie@email.uk.

Answer the following questions:

(a) What would this string look like?

(b) What would the packet look like, actually write out the basic parts of a real packet; assuming A is at 111.222.333 and B is at 444.555.666. This is a POST request. The information is transmitted using Caesar cipher offset by +1.

(c) Assuming the End-to-End protocol, identify the packets that would be passing back and forth. Do not create each packet. Only name the packet and summarize the information it would contain.

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