How is the Internet in a residential building?

Question

Computer networks

Good afternoon ;)
I'm interested in how the Internet is arranged up to the access shield.
I heard that there is a switch on the roof / basement, but I don’t know how everything is arranged before it and I would like to know. It is best to explain superficially. On the expanses of Google I found this picture, it is clear that the Internet does not enter a residential building out of thin air

Answer 1

All providers are different. The switch in the house (Access Node) is connected to the district switch (Aggregation Node), which is connected to the main switch in the provider's data center (Traffic Concentration Node), and then the router (BRAS).
Well, BRAS is already doing NAT, allowing you access to the Internet.
Depending on the provider, the scheme can vary greatly. So, Aggregation Nodes can be skipped, BRAS is replaced by a server with FreeBSD...

Answer 2

There is money - main optics and a hub in every house (node).
No money - "regular" (read good) ethernet cable with repeaters every 300-500 meters.

Answer 3

Options from FTTH (fiber to the home) to I blinded him because of what happened, with a bunch of stupid soapboxes and a pile of noodles, how many providers have so many schemes, depends on the budget and where the network architect's hands come from.