Objectives (Please Note that riverbed is required) Parts A to D: Require you to compare the performances of shared and switched Ethernet LANs under different scenarios. You should produce a report that will contain the graphs produced by the simulation runs requested for each model, and the answers to the questions as requested in this document. Make sure you collect all graphs for the relevant steps and processes. Part E: Using the knowledge gained from the OPNET simulation you are required to produce a proposal for the LAN and WAN scenarios incorporating appropriate switching equipment Emphasis is given to the justifications provided in recommending appropriate solutions to the different scenarios. Therefore, substantial critical analysis and research is required.