This document discusses computer networks and their types, configurations, topologies, advantages, and disadvantages. It defines a network as a connection between two or more computing devices that allows them to share information. The main types of networks covered are local area networks (LANs), metropolitan area networks (MANs), and wide area networks (WANs). Wired networks generally have faster transmission speeds but higher installation and maintenance costs than wireless networks. Common network topologies include bus, ring, and star configurations. In conclusion, networks have become an integral part of daily life by facilitating information and data sharing.