| A | B |
|---|
| Star | made up of a central connection point that is a device such as a hub, switch, or router, where all of the cabling segments actually meet |
| Extended Star | network expanded to include an additional networking device that is connected to the main networking device |
| Single Ring | hosts are connected in a circle; all devices on the network share a single cable, and the data travels in one direction only. |
| Bus | all the devices are connected by one single cable |
| Hybrid | combines more than one type of topology |
| Mesh | connects one host to the next and the last host to the first |
| Dual Ring | uses 2 rings for redundancy; allows data to be sent in both directions although only one ring is used at a time |
| Physical Topology | refers to the layout of the devices and media |
| Logical Topology | refers to the paths that signals travel from one point on the network to another |
| Ethernet | most popular type of LAN architecture; based on the IEEE 802.3 standard; uses baseband transmission over coaxial or twisted-pair cable that is laid out in a bus topology |
| Token Ring | defined in IEEE 802.5; computers connect to a central hub called a multistation access unit (MSAU); transfer rate 4or16 Mbps |
| FDDI | often used for metropolitan-area networks (MANs) or larger LANs; transfer rate 100 Mbps; uses fiber optic cable |
