多项选择题
A.the codec used by the calling phone
B.approximate length of the call in minutes
C.MOS values throughout the duration of the call
D.802.11e access category overruns
E.co-channel interference percentage during the call
多项选择题 WhichtwomulticastmodesarevalidoptionsforusewithEthernetbridgingonameshAP?（）
单项选择题 WhatwillimprovethebatterylifeofaCiscoUnifiedWirelessIPPhone7921G?（）
多项选择题 WhichtwostatementscorrectlydescribeaCiscoWLCconfigurationofWireless>QoS>Profiles>Wired_QoS_ProfilesforanimplementationofDSCPorCoSdeployment?（）