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Problem 3. (32 marks) The behavior of a TCP protocol can be described as follows that ssthreshold is initially set as 16 and TCP starts at cund-1 MSS. TCP has a triple duplicated ACK when a timeout when cvnd reaches 16. Suppose TCP ssthreshold/2. Transmission round 1 with initial cund reaches 20, and then TCP has nd- Reno is used and for fast recovery c ) (12 marks) What is congestion window size (cvnd) during transmission round 6? (b) (12 marks) What is congestion window size (cvnd) during transmission round 12? (c) (8 marks) Suppose TCP Tahoe is used instead of TCP Reno, what is congestion window size (cund) during transmission round 127 --- 20 -- 18 16 12- + -- 10 0 2468 10 12 14 16 18 Transmission round Figure 1: For your convenience for solving Problem 3