单项选择题
A.QoS trust should not be configured on a port attached to a standalone AP.
B.QoS trust for switchport mode access should be defined as "cos".
C.switchport mode should be defined as "trunk" with respective QoS.
D.switchport access vlan should be defined as "1".
单项选择题 A campus infrastructure supports wireless clients via Cisco Aironet AG Series 1230， 1240， and 1250 access points. With DNS and DHCP configured， the 1230 and 1240 access points appear to boot and operate normally； however， the 1250 access points do not seem to operate correctly. What is the most likely issue causing this problem？（）
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？ （）