Wan
A wide area network (WAN) is a network that covers a broad area (i.e., any telecommunications network that links across metropolitan, regional, or national boundaries) using private or public network transports. Business and government entities utilize WANs to relay data among employees, clients, buyers, and suppliers from various geographical locations. In essence, this mode of telecommunication allows a business to effectively carry out its daily function regardless of location. The Internet can be considered a WAN as well, and is used by businesses, governments, organizations, and individuals for almost any purpose imaginable

Why are network switches and Routers exciting?

o   A network switch connects the various devices within a LAN network so that they could communicate between each other and share the network resources between them.
o   A router on the other hand, connects disparate networks so that devices from one network can share data and information with the devices from another network. For example, router connects the devices from a LAN network within an organization to a WAN network (eg. Internet) outside the organization.