Ethernet and IEEE 802.3: is a baseband bus-type local area network standard that describes the implementation method of the physical layer and the data link layer. The Ethernet logic adopts a bus-type topology structure. All computers in the Ethernet share the same bus, and the information is sent by broadcast. The CSMA/CD method is used for access control to the bus.
1. Ethernet transmission medium and network card: thick cable, thin cable, twisted pair and optical fiber. The applicable conditions of various transmission media are as follows:
