多项选择题
Which three characteristics of the traffic flow are taken into consideration when the OoS-for-VPNs feature （OoS pre-classify） provides packet classification and applies appropriate OoS service on tunnel interfaces？ （）
A.IP precedence bits B.DSCP bits C.original port numbers D.DE bits E.source IP address F.destination IP address
多项选择题 Whichtwostatementsaboutthediffservmodelaretrue？（）
多项选择题 ForwhichtwotypesofapplicationscantheSDMprovidewizards？（）
单项选择题 Whichtrafficdescriptorscanberecognizedandcategorizedbyciscoqualityofservice（qos）features？（）
