WhichthreecharacteristicsofthetrafficflowaretakenintoconsiderationwhentheOoS－for－VPNsfeature（OoSpre－classify）providespacketclassificationandappliesappropriateOoSserviceontunnelinterfaces？（）

A.IPprecedencebits
B.DSCPbits
C.originalportnumbers
D.DEbits
E.sourceIPaddress
F.destinationIPaddress

【参考答案】

C, E, F