Traditionally, Coax was needed at every 'drop' for COX T.V. Now, (new home) there is no need. There's a mini-box, that uses a regular power cord, and connects to the T.V. via HDMI. I love this techno...
If you have coax connected to the outside of your house...as opposed to the newer fiber...your Mini Box will connect to coax cable.
The outside coax will connect (drop) to a wall outlet inside your living room. If you subscribe to Internet and TV, you'll need 3 segments of coax cable for your living room.
1. You'll connect Coax-1 to the wall plate 2. On the other end of Coax-1, you'll connect a splitter 3. The splitter will have at least 2 outputs 4. You'll connect Coax-2 to one of the outputs and to your Internet modem (DOCSIS) 5. You'll connect Coax-3 to the other output and to your Mini Box
If you have 4 cable boxes in other rooms, each box will connect to the coax drop in each room.
Your house has only 1 coax connected to it. Somewhere between that outside connection and your living room, there's a splitter to divide the signal for each room (drops). That splitter is probably behind the wall outlet in your living room. If you remove its cover plate, there's probably a 4-output splitter behind it. That splitter connects all rooms to that outside connection.