I have Full Fibre installed.
Outside in my garden there is a connection box for our part of the estate, from there a cable goes to other nearby residents and to our house where it is connected to an external box on our wall.
Inside there is one cable going to the the Router and from the Router there are two cables, each going to a TV box that we have in each of our two Lounges.
Ours is Virgin Media, but another company is presently installing another cable system in our vicinity, they installed the cable in our Road last week.
Our Virgin Router is dual band WiFi and that led to a problem, the Ring Video Doorbell that we had would not connect to either of the available WiFi bands so it has been changed to a device that does not require a subscription.
Hope this helps.