CWNA

Answer - C - PoE technology can be used to power an access point that is less than 100 meters away from a wiring closet.

Key Takeaway: Power over Ethernet is used for getting DC power to an access point from a power injector. Access points located further than 100 meters from a wiring closet cannot use PoE because the DC power is sent over the same cable as the data. This is because Cat5 cables can only extend to 100 meters.