单项选择题
A.Enable VTP pruning B.From privileged mode，erase the startup configuration file，then reload. C.From privileged mode，erase the vlandate file，then reload. D.Cycle the switch power.
一个默认的帧中继WAN被分类为哪种物理网络类型？（）A.点到点B.广播多路访问C.非广播多路访问D.非广播多点...
单项选择题一个默认的帧中继WAN被分类为哪种物理网络类型？（）
A.点到点 B.广播多路访问 C.非广播多路访问 D.非广播多点 E.广播点到多点
What is the function of the command switchport trunk na...
单项选择题What is the function of the command switchport trunk native vlan 999 on a？（）
A.It designates VLAN 999 for untagged traffic. B.It blocks VLAN 999 traffic from passing on the trunk. C.It createsa VLAN 999 interface. D.It designates VLAN 999 as the default for all unkown tagged traffic.
What are three features of the IPV6 protocol？（）A.compli...
多项选择题What are three features of the IPV6 protocol？（）
A.complicated header B.plug-and-play C.no broadcasts D.checksums E.optional IPsec F.autoconfiguration
