CCNA Data Center DCICN 640-911 Official Cert Guide

Positioning Leased Lines with LANs and Routers

The vast majority of end-user devices in an enterprise or SOHO network connect directly into a LAN. Many PCs use an Ethernet NIC that connects to a switch. More and more, devices use 802.11 wireless LANs, with some devices like phones and tablets supporting only wireless LAN connections.

Now think about a typical company that has many different locations. From a human resources perspective, it might have lots of employees that work at many locations. From a facilities perspective, the company might have a few large sites, with hundreds or even thousands of individual branch offices, stores, or other small locations. However, from a networking perspective, think of each site as being one or more LANs ...