A:AnswerThis modem is a Cable modem with WiFi capabilities. You wouldn’t necessarily need the AC1750 router to have WiFi; redundancy but that also means you can’t use them together (I believe). May need to talk with someone in the store about that.
A:AnswerNo, internet is not free. Once you by this router you must call Comcast/quest/Verizon or any internet service provider to activate it. They need the numbers on the router itself.