What does Backbone 2 forward?

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

Answer: (C)

Backbone 2 is configured to carry only even-numbered VLANs. In setups with two backbone links, VLANs are often split by parity to balance load and avoid duplicating traffic across both paths. Odd VLANs travel over the other backbone, while even VLANs are forwarded on Backbone 2. This means Backbone 2 handles traffic tagged with even VLAN IDs, and it won’t forward odd VLAN traffic or all VLANs indiscriminately. So the traffic Backbone 2 forwards is the even VLAN traffic.