多项选择题
A. Antenna power is a relative value reference to dBi.
B. LWAPP allows encrypted communications between lightweight access points and WLAN controllers.
C. Characteristics of antennas are directionality， gain， and polarization.
D. Power over Ethernet （PoE） is only available when a WLAN controller is integrated into the network.
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.
多项选择题 Under which three conditions does a client initiate roaming between wireless cells in the Company WLAN？ （）
多项选择题 Refer to the exhibit. The wireless user is moving from right to left towards AP2. What are three reasons that the wireless client would initiate roaming？（）
单项选择题 Refer to the exhibit. Which protocol establishes an optimal path to the root in a wireless mesh network？ （）