单项选择题
When a new trunk is configured on a 2950 switch, which VLANs by default are allowed over the trunk link（）。
A.no VLANs B.all VLANs C.only VLANs 1 - 64 D.only the VLANs that are specified when creating the trunk
单项选择题 命令standbystate-upinterval-time运用于（）。
多项选择题 以下哪些路由项由网管手动配置（）？
多项选择题 Which of the following are benefits of VLANs? （）
