Bye bye, Wi-Fi: How to add a wired network to your home without running Ethernet
Briefly

Setting up a full-time wired connection is easier said than done, especially if you're living and working in a rented house or apartment where running Ethernet cables is complicated.
The coaxial cable connecting those outlets can also carry internet signals, thanks to a technology called MoCA (Multimedia over Coax Alliance), which supports speeds up to 2.5 Gbps.
Read at ZDNET
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