This article is a must-read before any fiber optic cable installation. It details the costly mistake of using Multimode fiber for a long-distance run (it will fail). This post simply explains why Single-Mode is for distance and Multimode is for internal networks. A great bookmark for DFW project managers to avoid a major headache. https://www.cablingindfw.com/fiber-optic-cable-installation-single-mode-vs-multimode/