Consider the problem of careful file transfer. … [p. 279] [the disk storage system may introduce an error, the software may make an error in buffering and copying the file, there may be a transient hardware error during buffering and copying, the communication system may introduce an error, or either of the hosts may crash] … [p. 280] Thus, the [end-to-end] argument: In order to … reliability guarantee--in this case, a checksum to detect … to be extraordinarily reliable does not reduce the …
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