多项选择题
Which three pieces of information are used to calculate the total bandwidth of a VoIP call？（）
A.the packetization size B.the serialization of the interface C.the quantization D.the packet rate E.the UDP overhead F.the TCP overhead
多项选择题 WhataretwocharacteristicsoftheDiffServmodel？（）
多项选择题 WhichthreedevicesareusedbytheCiscoWirelessControlSystem（WCS）forwirelessmanagement？（）
多项选择题 WhichtwoCiscoAutoQoSconfigurationstatementsaretrue？（）
