What is one method that can be used to prevent VLAN hopping?

What is one method that can be used to prevent VLAN hopping? Select the best response.

What is one method that can be used to prevent VLAN hopping? Select the best response.

A.
Configure ACLs.

B.
Enforce username/password combinations.

C.
Configure all frames with two 802.1Q headers.

D.
Explicitly turn off Dynamic Trunking Protocol (DTP) on all unused ports.

E.
Configure VACLs.



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