ectives:$1.$ Become familiar with NS$-3$ as a powerful network simulation tool$2.$ Understand the first.cc and second.cc tutorial examples of NS$-33.$ Learn NS$-3$ Topology Helpers$4.$ Simulate a computer network and evaluate its performance in terms of differentperformance metricsRequirements: Students must review the tutorial material $($slides $+$ Chapter $5$ of the NS$-3\_$tutorialdocument$)$ that is available on Moodle under the NS$-3$ folder. Important Note: the NS$-3\_$tutorial document uses the command $./$ns$3$ to run simulations while we mentionedin the tutorial class that we should use $./$waf$.$ Therefore, all instructions and commandsin NS$-3\_$tutorial should work perfectly for you except that you should use $./$wafinstead of $./$ns$3.$ Students must work in groups of three $($same team that is working on the term paper$)$ Based on your understanding of the code in first.cc and second.cc$,$ create the followingnetwork topology: Laptops in the CSMA LAN may send traffic to one or more of the workstations on theEthernet LAN. The pattern of the traffic can follow any of the supported patterns in NS$-3$ Your code should take into consideration collecting important performance metrics likeend$-$to$-$end delay, throughput, and efficiency. These metrics should be printed on thescreen at the end of your simulation In order for the Router to handle the routing task, you will need to add the following lineof code at the end of your program just before the line Simulator::Run $()$;:Ipv$4$GlobalRoutingHelper::PopulateRoutingTables $()$;Deliverables: This assignment is worth $10\%$ of the overall course grade divided as follows:o Source code $($worth $3\%)$: each team must submit the source code. The code file musthave the names of the team members at the top as comments in the following format:# Student$1$ Name: $-------,$ Student$1$ ID: $-------$# Student$2$ Name: $-------,$ Student$2$ ID: $-------$# Student$3$ Name: $-------,$ Student$3$ ID: $-------$o The source code must be submitted as a PDF file via Moodle by Thursday, May $23,2024,$ at $5$ pm$.$o Demo $($worth $7\%)$: each team must demo their simulation in the lab. Demos will beconducted starting from the week of May $19,2024.$