Draw diagrams that reasonably depict a network infrastructure that will enable Coffee Retailer to achieve the company's strategic goal of offering customers public wireless Internet access. Make sure to list any assumptions regarding the company or your design that you need to make in order to design and draw a realistic diagram. Create a physical WAN diagram that places core and distribution-layer routers and switches in locations that optimize network performance. Please explain why the placement of the core and distribution-layer router and switches optimize network performance.