Introduction While studying for CompTIA Network+, I couldn't memorize the types of LAN cables and their use cases. Every time I faced these questions in mock tests, I got them wrong because of the complexity. Understanding the structure behind them cleared things up, so I decided to write it down. What is LAN cable LAN cable is the cable that connects between computers and network devices physically. The official name is Ethernet cable. The connectors attached to both ends of the cable are called RJ-45, and each consists of 8 thin wires (pins). What is a pin There are 8 thin copper cables inside LAN cable. These wires, called pins, are each numbered from 1 to 8. Understanding that there are TX (send) and RX (receive) pins is the key to understanding why different cable types exist. Cross section of RJ-45 connector (8 pins) ┌────────────────────────┐ │ 1 2 3 4 5 6 7 8 │ └────────────────────────┘ Enter fullscreen mode Exit fullscreen mode 4 pins are used to send and receive data.…