What two steps need to be taken in deploying AutoQoS for enterprise on routers？（）
A. provide visibility into the classes of service deployed using system logging and SNMP traps
B. determine WAN settings for fragmentation， compression， encapsulation， and Frame Relay-ATM interworking
C. enable the AutoQoS VoIP for voice traffic
D. generate and deploy MQC-based QoS policies
E. profile the traffic with Auto-Discovery
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