Linking apartment ethernet jacks. I am pretty inexperienced with networking just how would that set-up work?

Bubbleteaaa I recently moved into a brand name apartment that is new and pointed out that We have 3 separate coax+ethernet outlets all over apartment. My modem is within the workplace in addition to current set-up is coaxmodemroutercomputer in a single space but i wish to run a tough line community link with my xbox because of bad wifi sign. There's an ethernet socket right next to your xbox but absolutely nothing takes place when…