Introduction While studying for CompTIA Network+, I couldn't remember CAT standards in LAN cable field. The sheer number of specification made it difficult to answer related questions confidently. Once I understand how each standard evolved from the previous one, everything clicked. What is CAT standards LAN cable has CAT (Category) standards, which shows that higher number perform better. Understanding the logic behind each standard is more effective than memorizing numbers. Why higher standard accelerates speed LAN cables consist of 8 copper wires. Trying to increase signal speed introduced two key challenges. Problem 1：Crosstalk Receive electrical interference from the adjacent copper cables → Signal degrades Problem 2：Attenuation Longer distance weakens signal → Not be able to reach Enter fullscreen mode Exit fullscreen mode The higher standards are designed to solve these problems.…