Which two of these statements best describe the benefits of Cisco’s wireless IDS functionality？ （Choose two.）  （）

A、 AirDefense for wireless IDS is required by autonomous APs.

B、 2.40Hz CK management can monitor both 802.11 and non-802.11 CK interference.

C、 APs only monitor the RF channels that are servicing the clients.

D、 Cisco or CCX compatible client cards can extend the CK IDS service for autonomous APs.

E、 Autonomous APs must be dedicated IDS sensors while lightweight APs can combine client traffic and RF monitoring.