What is the goal of QoS in a network？ （）

A.use the command ip nbar protocol-discovery to allow identification of stateful protocols. Use the command ip nbar port-map to attach the protocols to an interface
B.use the command match protocol rtp to allow identification of real-time audio and video traffic. Use the command ip nbar port-map to extend the NBAR functionality for well-known protocols to new port numbers
C.use the command match protocol to allow identification of stateful protocols. Use the command ip nbar port-map to attach the protocols to an interface
D.configure a traffic class. Configure a traffic policy. Attach the traffic policy to an interface. 
E.configure video streaming. Configure audio streaming. Attach the codec to an interface

A.automated alternate routing （AAR）
B.Cisco CallManager Attendant Console
C.real-time protocol （RTP）
D.Survivable Remote Site Telephony （SRST）

A.to support fault and policy reporting， the WLSE requires a Wireless Control System （WCS）
B.when WLSE detects an AP failure， it automatically increases the power and cell coverage of nearby APs
C.WLSE requires the 2700 location appliance to offer location tracking
D.WLSE can locate rogue APs and automatically shut them down
E.WLSE configuration is done using the command line interface （CLI） or a WEB based template