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Which of the following timers is NOT used by FDDIMAC protocol ?

A Token holding timer
B Token rotation timer
C Valid transmission timer
D None of these
Answer & Explanation
Option: [D]

FDDI MAC protocol uses three times. The token holding timer (determines duration for which a station can transmit after acquiring token). The Token rotation timer (is restarted every time the token is seen) and valid transmission timer (used to time out and recover from certain transient ring errors).

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