This document provides an overview of networking hardware and technologies used to build local networks and connect to the internet. It describes different network types including personal area networks, local area networks, wireless LANs, metropolitan area networks, and wide area networks. Common internet connection technologies like cable internet, DSL, satellite, fiber, and cellular networks are also discussed. The document also covers networking hardware such as switches, hubs, bridges, wireless access points, cables, connectors, and tools used for setup and troubleshooting.