Ethernet is the most commonly used communication protocol standard used in existing LANs. Ethernet Quality Tester using CSMA/CD technology transmission (that is, carrier sense multi-access and collision detection technology), I have learned the name of this seemingly sloppy technology, but it is quite intimate.
Simply talk about the principle of carrier-monitoring multi-access and collision detection technology: when a node wants to send data to another node in the network, it first listens to the channel; if the channel is idle, it sends data and continues to listen; if When a conflict is detected during data transmission, the data transmission is stopped, and after waiting for a while, the data is restarted. Probably the meaning is this, the description is definitely not the professional in the book.
Using Ethernet Link Tester to transmit on both the network cable and the optical fiber, we all know that the network cable is an electrical signal communication transmission, and the optical fiber is an optical signal communication transmission. Packet communication is carried out during the transmission process, and the packet is actually an Ethernet frame. It is equivalent to packing the signal into a segment of the Ethernet frame, and then transmitting communication to each other in each medium.
