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Exam 100-105 Question id=551 LAN Switching Fundamentals

Which statement about native VLAN traffic is true?

A. Cisco Discovery Protocol traffic travels on the native VLAN by default.
B. Traffic on the native VLAN is tagged with 1 by default.
C. Control plane traffic is blocked on the native VLAN.
D. The native VLAN is typically disabled for security reasons.