This document discusses different network topologies including physical and logical topologies. It describes several common physical topologies like bus, mesh, point-to-point, hybrid, tree, ring, and star. The bus topology connects all nodes to a single cable backbone. The mesh topology connects each device to every other device. Point-to-point connects only two devices directly. Hybrid topologies combine features of different standard topologies. Tree topologies connect nodes in a hierarchical structure with a root node. Ring topologies connect each device to the two nearest devices in a circular fashion. Star topologies connect all devices to a central hub device.