Question: In a network using the Selective - Repeat protocol with m = 4 and the sending window of size 8 , the value of variables

In a network using the Selective-Repeat protocol with m=4 and the sending window of size 8, the value of variables are f=62, Sn=67, and Rn=64. Packet 65 has already been acknowledged at the sender site. Packets 65 and 66 are received out-of-order at the receiver site. Assume the network does not duplicate the packets. What are the acknowledgement numbers of pending ACK packets (in transit corrupted, or lost)?

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