Cisco Certified Network Associate (CCNA) 200-301 — Question 1235

The correct answer is B. Option B: Change the native VLAN to an unused VLAN ID.

Explanation

Frames in the native VLAN are untagged by default on an 802.1Q trunk. A VLAN creates a separate Layer 2 broadcast domain on switched infrastructure. NAT translates addresses between network domains, commonly conserving public IPv4 addresses.