The following topics are covered in this chapter:
Open System Interconnection Reference Model
Connection-Oriented and Connectionless Network Services
Internetworks are groups of individual networks functioning as a single large network. Internetworking refers to the technology and devices—such as bridges, routers, and switches—creating and administering these internetworks.
Two primary types of networks are used by customers:
Local-area networks (LANs) enable multiple users in a small geographical area, such as within a building or campus, to share files and exchange messages. LANs also enable the sharing of resources, ...