Ask most people what the box with the blinking lights does and they'll say "it's the internet." Fair. But that box is usually doing three or four separate jobs, and once you know which is which, a lot of home network problems (and shopping decisions) start making sense. The modem talks to your ISP Your internet provider delivers service over some kind of line: coaxial cable, a phone line for DSL, fiber, or a cellular signal. The modem's job is to translate whatever comes in on that line into regular Ethernet that a computer understands. That's all it does. It doesn't hand out addresses to…
Modem, Router, Access Point - Three Jobs, Often One Box
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