In a Navy Switch, which VLAN traffic does Backbone 1 forward?

• A. Even VLAN traffic.
• B. All traffic.
• C. No traffic.
• D. Odd VLAN traffic.

Answer: (D)

This item tests how a switch handles VLAN-tagged traffic on its redundant backbone links. In this Navy Switch design, Backbone 1 is configured to carry only odd-numbered VLANs. VLAN tagging (802.1Q) assigns each frame to a VLAN by its ID, and trunk ports can be restricted to a subset of VLANs. By allocating only odd VLANs to Backbone 1, traffic for those VLANs is forwarded along that path, while traffic for even VLANs uses a different backbone. This setup provides redundancy and can help balance load across backbones. So, Backbone 1 forwards traffic for VLANs with odd numbers.