i'm not a network engineer. I'm just regular internet user who wants to ask couple of simple questions. Sorry if these are just basic questions.
My house already has ethernet cable installation. In 1st floor, i have 5 cables coming out from the wall , and each of these are connected to every room (2nd floor) in my house, the cables are look the same with no label, so i have no idea which cable is for room A or room B etc. Now, i want to connect my router from 1st floor to 2nd floor , i won't ask about the router setup or etc ( i can googling it) . But my question is about the hardware/tool to help me setup this network :
What tool should i buy to probe which cable is carrying the signal to room X ? i have no idea about the cost for this tool, but if it's too expensive, is there any other technique ?
I have 2 generic router for home use (4 port gigabit router) from asus and tplink. If i want to connect them , should i go for crossover or straight ? what is the rule ?
the cable coming out from the wall is quite short, so if i want to extend them i'm gonna need an female to female coupler, am i right ? straight or cross for this setup ? is there anything else should i aware of ?