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Consider a simple application-level protocol built on top of UDP that allows a client to
retrieve a file from a remote server residing at a well-known address. The client first
sends a request with a file name, and the server responds with a sequence of data
packets containing different parts of the requested file. To ensure reliability and
sequenced delivery, client and server use a stop-and-wait protocol. Ignoring the obvious
performance issue, do you see a problem with this protocol? Think carefully
about the possibility of processes crashing.
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