You are hired as a consultant by the Faulty Networks Corporation to fix a problem that they are having with a proprietary transport layer protocol, FNC-TP. FNC-TP uses a Go-Back-4 ARQ scheme. The sequence number field and the acknowledgement field of the FNC-TP header are each two bits in length. Draw a diagram (similar to Figure 3.22 in Kurose and Ross) that demonstrates that FNC-TP may not always work properly

Sender Receiver send pkt0 : , rcv pkt0 send ACKO send pktl: : rcv pktl send pkt2 send ACK1 (loss) send pkt3 (wait): :rcv pkt3, discard send ACK1 rCv ACKO send pkt4 rcv ACK1 send pkt5 : rcv pkt4, discard ; send ACK1 pkt2 timeout send pkt2: rcv pkt5, discard : send ACK1 send pkt3 send pkt4 send pkt5 . rcv pkt2, deliver send ACK2 : rcv pkt3, deliver : send ACK3 Figure 3.22 Go-Back-N in operation