200-301 Question 200
Single answerYou are configuring a trunk link between two Cisco switches. The network administrator informs you that untagged traffic must be assigned to VLAN 99. What configuration step should you take to ensure compliance with this requirement?
- A
Set VLAN 99 as the native VLAN on the trunk port.
- B
Assign VLAN 99 to all access ports on the switch.
- C
Enable 802.1Q tagging for VLAN 99 on the trunk port.
- D
Remove VLAN 99 from the trunk port configuration.
Show answer and explanation
Correct answer: A
Explanation
The native VLAN on a trunk port is used to handle untagged traffic. By configuring VLAN 99 as the native VLAN, any untagged traffic traversing the trunk link will be assigned to VLAN 99. This satisfies the requirement specified in the scenario, making the first option the correct configuration step.
- A. Correct.
Setting VLAN 99 as the native VLAN ensures that untagged traffic is associated with VLAN 99 on the trunk link, fulfilling the requirement.
- B. Incorrect.
Assigning VLAN 99 to access ports does not affect the trunk link, as the requirement specifically involves the handling of untagged traffic on the trunk.
- C. Incorrect.
Enabling 802.1Q tagging for VLAN 99 would tag traffic, which contradicts the requirement for handling untagged traffic.
- D. Incorrect.
Removing VLAN 99 from the trunk port configuration would prevent its use entirely, violating the requirement.