3) End to end throughput and bottleneck links Consider the scenario shown below, with four different servers connected to four different clients over four three-hop paths. The four pairs share a common middle hop with a transmission capacity of R = 400Mbps. The four links from the servers to the shared link have a transmission capacity of Rs = 90Mbps. Each of the four links from the shared middle link to a client has a transmission capacity of Rc = 10Mbps per second. R 10 M R90 Mes R - M R-400 Mbps Re 10 M R 10 M Re-10 M R 10 M 1. What is the maximum achievable end-end throughput (in Mbps) for each of four client-to-server pairs, assuming that the middle link is fair-shared (i.e., divides its transmission rate equally among the four pairs)? 2- Which link is the bottleneck link for each session? 3- Assuming that the senders are sending at the maximum rate possible, what are the link utilizations for the sender links (Rs), client links (RC), and the middle link (R)? Rs-90 Mbps 90 Mbps RS-90 Mbps RS 90 Mbps R = 400 Mbps 10 Mbps Rc 10 Mbps Re-10 Mbps Rc- 10 Mbps