Star
mesh
Tree Topology allows for the expansion of an existing network
dual ring
The Active topology functionally allow you to make element inactive (and chnage them back active again).
Star topology.
bus topology.
Bus star ring mesh hybrid
Star Topology
Ring Topology, Mesh Topology, Bus Topology, Star Topology
The most common LAN topology is that of a "star." In a star topology, each computer, or "node", is connected to a central hub. This is more reliable than a more classical "ring" topology, because a node failing will not bring down the entire network. A bus topology is arguably more reliable, but has poorer performance.
STAR-Bus
Star network,ring network,tree network,bus network
Star Topology, where Hubs can act as repeaters.
STAR Topology
A hybrid is a combination of two or more basic network topologies, such as a star-bus, star-ring, or tiered topology.
Star