单项选择题
What parameter can be different on ports within an EtherChannel?（）
A.speed B.DTP negotiation settings C.trunk encapsulation D.duplex
单项选择题 What authentication type is used by SNMPv2?（）
多项选择题 What are two enhancements that OSPFv3 supports over OSPFv2? （）
多项选择题 What are three factors a network administrator must consider before implementing Netflow in the network?（）
