What action can a network administrator take to help mitigate the threat of VLAN hopping attacks?
- Disable automatic trunking negotiation.
- Disable VTP.
- Enable PortFast on all switch ports.
- Configure all switch ports to be members of VLAN 1.
Explanation: There are two methods for mitigating VLAN hopping attacks:
disabling automatic trunking negotiation on switchports
turning trunking off on all unused nontrunk switchport
Exam with this question: CCNA Security Certification Practice Exam Answers
Exam with this question: Module 14: Quiz – Layer 2 Security Considerations Network Security
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