and decide whether you're going to use Cat 5e or Cat 6 network cables. There are four pairs of wires in an Ethernet cable, and an Ethernet connector (8P8C) has eight pin slots. Each pin is ...

Those will be connected with a short Cat-5 or Cat-6 Ethernet cable and the modular RJ-45 8-pin connector. There are many homes in which that's likely the extent of their Ethernet install.