单项选择题
Which one of these is a valid HSRP Virtual Mac Address?（）
A.0000.0C07.AC15 B.0000.5E00.01A3 C.0007.B400.AE01 D.0007.5E00.B301
多项选择题 What are the benefit of using Netflow?（）
多项选择题 What are the three things that the Netflow uses to consider the traffic to be in a same flow ?（）
多项选择题 What level will be trapped if the administrator executes the command ？（）
