Single mode or multimode fiber, what’s the actual difference, and which one should you be using? In this video, I break it down without the fluff: distance, light source, core size, cost, and why mixing them is a rookie mistake. If you’ve ever been confused by yellow vs. aqua jackets or didn’t know your VCSEL from your laser, this one’s for you. #networking #tech #it #fiber #it #networkengineer #ccna | Kevin Nanns