(Twisted-Pair Cable (TP) is the most widely used network cable for networking in our local area network. The twisted-pair cable is composed of 4 pairs of 8-core wires of different colors, each of which is twisted according to certain rules. together, become a core pair. As the most basic connection and transmission medium of Ethernet LAN, people don't pay enough attention to twisted pair network cable, they always think it is insignificant. network performance.)