What are three traffic descriptors typically used to categorize traffic into different classes？（）

A.the SDM QoS wizard will create two real-time traffic classes to handle VoIP， voice signaling， and video packets
B.the SDM QoS wizard will create three real-time traffic classes to handle VoIP， voice signaling， video， and video packets
C.the SDM QoS wizard will create four real-time traffic classes to handle VoIP， voice signaling， video， and video streaming packets
D.the SDM QoS wizard will create two business-critical traffic classes to handle transactional and  network management packets
E.the SDM QoS wizard will create three business-critical traffic classes to handle transactional， network management， and routing packets
F.the SDM QoS wizard will create four business-critical traffic classes to handle transactional， network management， routing， and best-effort packets

A.a Wireless Location Appliance acts as a server to one or more Cisco WCSs. It collects， stores， and passes on data from its associated Cisco WLAN controllers
B.before using the Web interface， the initial configuration of the Wireless Location Appliance must be done using the command-line interface （CLI）
C.the Cisco 2000， 2700， 4100， and 4400 are examples of Wireless Location Appliance.
D.the Wireless Location Appliance visually displays the location information of WLAN devices and forwards this information to third-party applications using the Simple Network devices and forwards this information to third-party applications using the Simple Network Management Protocol （SNMP）
E.the Wireless Location Appliance visually tracks up to 15，000 WLAN devices and can store this information for 90 days.

A.IP precedence bits
B.DSCP bits
C.original port numbers
D.DE bits
E.source IP address
F.destination IP address