单项选择题
A network administrator creates a layer 3 EtherChannel, bundling four interfaces into channel group 1. On what interface is the IP address configured?（）
A.the port-channel 1 interface B.the highest number member interface C.all member interfaces D.the lowest number member interface
单项选择题 What parameter can be different on ports within an EtherChannel?（）
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? （）
