Which three statements are true about implementing wireless LANs in the network using Ciscodevices？（）

• A、Antenna power is a relative value reference to dBi
• B、LWAPP allows encrypted communications between lightweight access points and WLANcontrollers.
• C、Characteristics of antennas are directionality， gain， and polarization
• D、Power over Ethernet （PoE） is only available when a WLAN controller is integrated into thenetwork
• E、The WLAN solution Engine （WLSE） is used to control lightweight access points
• F、One of the advantages of the lightweight WLAN solution is that the devices act indepently