A、 An end station attempts to gain access to all VLANs by transmitting Ethernet frames in the  802.1q encapsulation.

B、 Configuring an interface with the "switchport mode dynamic" command will prevent VLAN  hopping.

C、 Attacks are prevented by utilizing the port-security feature.

D、 Configuring an interface with the "switchport mode access" command will prevent VLAN  hopping.

E、 An end station attempts to redirect VLAN traffic by broadcasting multiple ARP requests.