单项选择题 You work as a network engineer for . You study the exhibit carefully.  What happens when the switch 2 is connected to the rest of the network in the VTP domain Lab_Network？（） Exhibit：

单项选择题 Exhibit： You work as a network administrator at.You study the exhibit carefully. Three different wireless groups of users （support， staff， guests） are permitted to access the wireless LAN.  Which security policy should be implemented for the users in the guests group？ （）

单项选择题 You work as a network administrator at， You have been asked to configure 802.1x port-based authentication. You notice that the client workstation is not compatible with 802.1x port-based authentication.  What supported authentication server should be chosen？（）