JNCIS-SP: Juniper Networks Certified Specialist – Service Provider Routing (2022) — Question 52

You have two MX Series devices connected together and configured for Layer 2 operations. The interface that connects the two routers must carry tagged and untagged traffic.
Which approach would meet this objective?

Answer options

• A. Configure the interfaces as access ports with the native VLAN option
• B. Configure the interfaces as trunk ports with the native VLAN option
• C. Configure the interfaces as access ports with the voice VLAN option
• D. Configure the interfaces as trunk ports with the voice VLAN option

Correct answer: B

Explanation

The correct answer is B because configuring the interfaces as trunk ports allows for the transmission of both tagged and untagged traffic, with the native VLAN option specifying which untagged traffic can be sent. The other options either limit traffic to untagged only (A and C) or incorrectly use the voice VLAN option, which is not suitable for carrying both types of traffic (C and D).