1. How Networks Work

Back in the dark ages of personal computing (about a decade or so ago), if you wanted to cobble together a computer network, you needed miles and miles of Ethernet cable, a couple of guys wearing white lab suits, a degree in information technology, and all the time in the world. Fortunately, that’s not the case anymore; today, you can set up a home network by connecting a few cables and selecting a few options in a configuration program—so simple just about anyone can do it.

That’s a good thing, because just about everyone needs a home network. At the very least, you need a ...

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