Hey guys, I just started a networking course and I'm pretty bogged down with information that I'm trying to put into a rational context. From my understanding, networking first began with the telephone line, which is pretty straightforward. You have the sender and the receiver. Then there was the problem of sending text information, so from that demand, came the modem, which worked on the telephone line, and so that was also straightforward. What I can't quite wrap my head around yet is hubs, switches and routers. I think my difficulty stems from not having a clear understanding of the problem that hubs, switches and routers solve. What exactly was the limitation of merely a modem based network? Why was there a demand for further technologies like hubs, switches and routers? My understanding is that hubs are a simpler and less intelligent technology. The next step up would be switches And then the next step in evolution was routers. But I'm not clear on the difference between hubs, switches and routers. I did google this info, and I found the explanations difficult because like I've been emphasizing, none of the explanations focus on the problems that these technologies solve. So that's where I need you guys.