By default， on the WLAN controller for a voice application using Cisco 7921 wireless IP phones， what is thepercentage of RF bandwidth that can be dedicated to the phones？（）

单项选择题OnaWLANcontroller，whatisthedefaultroamingbandwidthpercentagereservedforvoice clients？（）

A.6 percent
B.12 percent
C.18 percent
D.24 percent

多项选择题When configuring a WLAN controller for a voice application using Cisco 7920 wireless IP phones. Which two general control settings should you select？ （）

A.Aggressive Load Balancing on
B.Aggressive Load Balancing off
C.Multicast on
D.Multicast off
E.AP Fallback on
F.AP Fallback off

单项选择题Clients using Cisco-LEAP and EAP-FAST authentication are having no problems logging on to the wirelessnetwork， but clients using PEAP are failing to log on. Which situation would result in this type of problem？（）

A.The AAA server is set to accept both MS-CHAP v2 and GTC for PEAP authentication.
B.Clients have been set to validate the server identity.
C.Posture validation has not been enabled.
D.Clients and server are not using certificates.

单项选择题You review the Failed Attempts logs on an AAA server and find：  unknown network access server error. Which failure could produce this error？（）

A.failure of the wireless client and AAA server handshake
B.supplicant authentication failureB.AAA client and AAA server handshake failure
C.wrong password used by the supplicant

单项选择题On a Cisco Aironet 802.11 a b g wireless LAN client adapter， the status LED and activity LED arealternating on and off. What does this indicate？（）

A.The client card has failed.
B.The client card is not associated to the network.
C.The driver has been installed incorrectly.
D.The client card has awakened from power-save mode.