That you can do what you describe is why I love the Internet! There is effectively no limit to the scale and topology of the network, and with a well-configured

That you can do what you describe is why I love the Internet! There is effectively no limit to the scale and topology of the network, and with a well-configured system you can literally yank cables out and find the network operating without more than a second or two of additional latency. I play chess on lichess.org, and when the Wi-Fi signal drops out my device switches to LTE without even interrupting the game! The fact that all of the above is possible with only a single kind of cable and generic, 'dumb' switches is icing on the (seven-layer) cake.