This document discusses different types of network topologies including star, ring, bus, hybrid, and FDDI networks. A star network connects all computers and devices to a central hub. In a ring network, devices are connected in a continuous loop. A bus network connects all devices to a common cable without a central computer. A hybrid network combines elements of star, ring, and bus networks. An FDDI network is a high-speed network suitable for high resolution graphics and digital video.