Ethernet over coax

So, imagine you have a really long garden hose that goes all the way from your house to your neighbor's house. And you want to use that hose to send messages back and forth between your computers without having to run a separate cable.

Well, Ethernet over coax is kind of like using that garden hose to send information instead of water. Coax is a type of cable that's often used to transmit TV signals, but it can also be used for Ethernet.

Basically, the way it works is that you plug one end of the coax cable into your computer and the other end into a device called a modem. The modem then converts the Ethernet signal from your computer into a signal that can be sent over the coax cable.

Once the signal gets to the other end of the cable, another modem converts it back into an Ethernet signal that your neighbor's computer can understand. And then your computers can send messages back and forth like they're connected with a regular Ethernet cable.

So, in a nutshell, Ethernet over coax lets you use an existing cable (like the garden hose in our example) to connect your computers and send data back and forth without having to run a new cable.