Just Choose by Distance — A Simple Guide to Understanding Transceiver and Fiber Cable Compatibility

Introduction While studying for CompTIA network+, I couldn't grasp the relationships between Transceiver and Fiber cable. I could memorize 10GBase-SR uses MMF, but I didn't understand what is that. Once I understood the structure, everything cleared up. So I decided to write it down. Why optical fiber is needed In my last post, I introduced LAN cables (copper cables), which have a limited range. LAN cable → Max 100m Optical fiber → A few kilometers to tens of kilometers In an office use, it is e