Consider the scenario shown below, with 20 different servers…

Consider the scenario shown below, with 20 different servers (four shown) connected to 20 different clients over ten three-hop paths. The pairs share a common middle hop with a transmission capacity of R = 200 Mbps. Each link from a server has to the shared link has a transmission capacity of RS = 50 Mbps. Each link from the shared middle link to a client has a transmission capacity of RC = 25 Mbps. What is the maximum achievable end-end throughput (in Mbps, give an integer value) for each of ten client-to-server pairs, assuming that the middle link is fairly shared and all servers are trying to send at their maximum rate?

Consider the 4-router network shown below, where packet forw…

Consider the 4-router network shown below, where packet forwarding is controlled by flow tables (e.g., configured via OpenFlow in an SDN controller), rather than by a forwarding table computed by a routing algorithm. The addresses of networks attached to each of the router is also shown. The interfaces at each of the routers are also as indicated. Suppose we want the following forwarding behavior of packets to be implemented: TCP packets coming from the source network attached to s2 and destined to the network attached to s3 should be forwarded along the path: s2 -> s1 -> s4 -> s3.  What rule should be inserted at router s1