JNCIS-ENT: Juniper Networks Certified Specialist – Enterprise Routing and Switching (2025) — Question 72

You are deploying a trunk port with multiple VLANs.

In this scenario, which statement is true about the native VLAN?

Answer options

• A. The native VLAN is the highest tagged VLAN ID on the port.
• B. The native VLAN must be the default VLAN on the port.
• C. The native VLAN is an untagged VLAN ID on the port.
• D. The native VLAN is automatically configured through DHCP.

Correct answer: C

Explanation

The correct answer is C because the native VLAN is indeed the VLAN that is untagged on a trunk port, allowing traffic from this VLAN to flow without adding a VLAN tag. Options A and B are incorrect as the native VLAN is not necessarily the highest tagged VLAN ID or the default VLAN. Option D is wrong because the native VLAN is statically configured, not set by DHCP.