Review and describe the most important criteria for selecting internetworking devices at the core, access, and distribution layer in a computer network

When designing a network there are many different important criteria for selecting internetworking devices for router the number ports need for your business. The processing speed and amount of memory do you need for your business. If you need LAN or WAN support availability and quality of technical support and documentation of training and vendor. For switch and bridges you have to look at number of MAC address can learn, support of port security, support for cut through switching and support for adaptive cut through switching. Don’t forget amount of memory. The router network layer protocols supported, routing protocols support, support for multicast, support for advanced queuing switching and other optimization. These are all important of selecting internetworking. You have to look at the business and customers that you are support then you use these internetwork criteria to make your decisions.

Priscilla Oppenheimer (2012). Top-Down Networking Design. (Special Edition for Strayer University)
Boston, MA, Pearson Learning Solutions

Describe the key criteria involved in selecting WAN technologies and WAN providers. Discuss which criteria is the most important from your perspective and state why.

When selecting WAN technologies and WAN provider this will vary from company to company one of the most important factors would be the cost. This would also include business requirements and technical goals of the company. With WAN provider it would depend on the cost and what the provider offers from global coverage management or monitoring capabilities.
In mine opinion it is up to the business that needs the WAN and provide and how much money they want to spend on it. You can make big plans but if the