A:AnswerNo. This is for hardwiring service, not WiFi. You can buy a WiFi Extender that plugs into any outlet (for power) to extend your WiFi in your home.
A:AnswerYes, it will work. This device may handle up to 4 other devices and will have no issue running. If you encounter slow internet speeds, that maybe because of your internet plan/provider or too many devices maybe using the same internet at the same time causing traffic on your internet connection speed.