<networking> A classification of low priority network traffic, used
especially the Internet.
Different kinds of traffic have different priorities. Videoconferencing and
other types of real-time communication, for example, require a certain minimum
guaranteed bandwidth and latency and so must be given a high priority.
Electronic mail, on the other hand, can tolerate an arbitrarily long delay and
is classified as a "best-effort" service.
[Scientific American, Nov. 1994, pp. 83-84].
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