This document discusses several common network topologies including bus, star, ring, tree, and mesh. It provides details on the characteristics of each topology such as how the devices are connected, advantages, and disadvantages. A bus topology connects all devices in a linear fashion. A star topology connects all devices to a central hub. A ring topology connects devices in a circular fashion. A tree topology combines elements of bus and star with branches connecting to a backbone. A mesh topology fully connects all devices for improved reliability but is very expensive.