Cisco Certified Network Associate (200-301 CCNA) – Question643

What is a practice that protects a network from VLAN hopping attacks?

A.
Enable dynamic ARP inspection
B. Configure an ACL to prevent traffic from changing VLANs
C. Change native VLAN to an unused VLAN ID
D. Implement port security on internet-facing VLANs

Correct Answer: C