WhereareCiscoUCSvNICscreated？（）

A．应付成本 B．重置成本 C．沉没成本 D．可避免成本 E．不可避免成本

A．ConfiguretheprivateVLANportparameters. B．ConfigureandmapthesecondaryVLANtotheprimaryVLAN. C．DisableIGMPsnooping. D．SettheVTPmodetotransparent.

<img src='https://img2.soutiyun.com/shangxueba/ask/64347001-64350000/64349888/0398b672a5fe93231b8d66737518db9a.png' /> A.It has more than one interface that is connected to the root network segment. B.It is running RSTP while the elected root bridge is running 802.1d spanning tree. C.It has a higher MAC address than the elected root bridge. D.It has a higher bridge ID than the elected root bridge.

<img src='https://img2.soutiyun.com/ask/uploadfile/2019-03-27/35d9c330a562c157d9663f8f4478c373.jpg' /> A．错误 B．正确

А.20 B.26 C.36 D.72