A:
Yes Internet service providers do in fact work with routers like the Netgear Nighthawk. What you will find with cable companies is that you will need to buy a cable modem on top of this router so you can plug the cable wire into the cable modem and plug Netgear Nighthawk into the cable modem also. A simple diagram for your reference:
Cable wire from wall > Cable Modem > Netgear Nighthawk router
> Means plugged into
I hope this helps.