A:AnswerNo it doesn't. If you want a motherboard with built in Wi-fi you would be better off going with a Z390 chip set motherboard as most if not all have built in WiFi, these motherboards work with both 8th and 9th gen 300 series Intel processors.
A:AnswerYes, this motherboard is compatible with the GTX 1070 and i7 processors. For a list of fully compatible processors for this board please see the following link: https://www.asus.com/us/Motherboards/PRIME-Z370-A/HelpDesk_CPU/