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)
E
None of the above
Correct Answer: 1/ (1 - F)