the value of variables of Sf = 62, Sn= 67, Rn= 64.Packet 65 has already been acknowledged at the sender side;Packet 65 and 66 are received out of order at the receiver side. Assume the network does not duplicate the packets .
a)What are the sequence nos of pending data packets(in transit,corrupt or lost)?
b)What are the acknowledgement nos of pending ACK packets (in transit, corrupt or lost)?