Question

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 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

Answer 1

The discrete-time Fourier transform developed as we have just described corresponds to a decomposition of an aperiodic signal as a linear combina- tion of a continuum of complex exponentials. The synthesis equation is then the limiting form of the Fourier series sum, specifically an integral.