I have several rooms in my house that have ethernet ports in them. The ports are all wired, but they all terminate at the same point (my basement) and are not connected to anything (so all wires are connected to a port but nothing on the other end). One of the ports is next to my router/modem combo. If I were to connect my router/modem to the ethernet port and then connect all the terminated ends to an ethernet switch would the network then connect all ports and allow me access to the internet?