1.

Data link layer retransmits the damaged frames in most networks. If the probability of a frame's being damaged is p, what is the mean number of transmissions required to send a frame if acknowledgements are never lost.

A. P I (K + 1)
B. KIK (1 + F)
C. 1/ (1 - F)
D. K I (K - P)
Answer» D. K I (K - P)


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