NSE 7 – Network Security Architect — Question 28

An administrator has configured a FortiGate device with two VDOMs: root and internal. The administrator has also created and inter-VDOM link that connects both
VDOMs. The objective is to have each VDOM advertise some routes to the other VDOM via OSPF through the inter-VDOM link. What OSPF configuration settings must match in both VDOMs to have the OSPF adjacency successfully forming? (Choose three.)

Answer options

• A. Router ID.
• B. OSPF interface area.
• C. OSPF interface cost.
• D. OSPF interface MTU.
• E. Interface subnet mask.

Correct answer: B, D, E

Explanation

For OSPF adjacency to form successfully across VDOMs, the OSPF interface area, OSPF interface MTU, and interface subnet mask must match. The Router ID is unique to each OSPF router and does not need to match between the VDOMs, while OSPF interface cost is used for route selection and does not need to be the same for adjacency formation.