priority and reservation higher priority stations
Priority and Reservation
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q describe flow and error control mechanismsflow and error control mechanisms - stop and wait arq- go-back arq- selective repeat
q illustrate stop-and-wait automatic repeat request- simplest flow as well as error control mechanism- the sending device keeps a duplicate copy of
token passing - token ring ieee 8025 needs that station take turns sending data token passing coordinates process token is a especially formatted
q why we use numbering frameswhy numbering framesstop--and-wait arq 1 numbering frames prevents the retaining of duplicate frames2 numbered
priority and reservation higher priority stations may possibly access the token sooner each station has a priority code since token passes by
q explain stop--and--wait automatic repeat request1 numbering frames prevents the retaining off duplicate frames2 numbered acknowledgement are needed
q illustrate the drawbacks of stop and waitdrawbacks of stop and wait - only one frame is able to be in transit at a time- after every frame sent the
q what is sliding window protocolsalternatives sliding window protocols - one task begins prior to the other one ends
switch in a physical ring configuration any disabled or else disconnected node can disable the entire network use of a switch can permit the ring to
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