Question II- TCP Congestion Control (70 points) Given the graph below of a TCP Reno congestion control method: 45 40 35 30 25 Congestion Window Size (segments) 20 15 10 5 0 0 5 10 15 20 25 30 Transmission Round a) [5 points] Identify the intervals of time when TCP slow start is operating. b) [5 points] After the 22nd transmission round, is segment loss detected by a triple duplicate ACK or by a timeout? Justify? c) [10 points) What is the value of Threshold at the 18th transmission round? Justify? d) [10 points) How many packets have been sent out from the first round till 16nd round, inclusive? [Show all your work] e) [10 points] Assuming a packet loss is detected after the 26th round by the receipt of a triple duplicate ACK, what will be the values of the congestion window size and of the threshold? Justify? f) [15 points) During what transmission round is the 150th segment sent? [Show all your work] g) [15 points] Suppose TCP Tahoe is used, and there is a timeout event directly after round 16. How many packets have been sent out from 16th round till 22nd round, inclusive? [Show all your work]