多项选择题
A. Attacks are prevented by utilizing the port-security feature.
B. An end station attempts to gain access to all VLANs by transmitting Ethernet frames in the 802.1q encapsulation.
C. Configuring an interface with the switchport mode dynamic command will prevent VLAN hopping.
D. An end station attempts to redirect VLAN traffic by transmitting Ethernet frames in the 802.1q encapsulation.
E. Configuring an interface with the "switchport mode access" command will prevent VLAN hopping.
多项选择题 The Company security administrator is concerned with VLAN hopping based attacks. Which two statements about these attacks are true？ （）
单项选择题 Refer to the exhibit. PCs in VLAN 2 are not able to communicate with PCs in VLAN 3. What could be the cause？（）
单项选择题 You are configuring a Cisco multilayer switch for the Company network. Which command would you use to configure a port to act as a routed interface？（）