The document summarizes four types of computer networks: personal area networks (PANs), which connect devices within 10 meters of a person using wireless technologies; local area networks (LANs), which connect devices within a single building or home using cables, routers, and switches; wireless local area networks (WLANs), which allow wireless device connection and function similarly to LANs but transmit data via Wi-Fi instead of cables; and campus area networks (CANs), which interconnect multiple LANs within an educational or corporate campus and typically connect to the public internet, spanning a limited geographic area that is smaller than a metropolitan area network. The presentation was delivered by a group led by John Mark Tubo.