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Advanced VPN and Zero TrustmediumMultiple ChoiceObjective-mapped

NSE7 Advanced VPN and Zero Trust Practice Question

A FortiGate administrator configures a hub-and-spoke VPN with OSPF routing. The spoke FortiGates are learning routes from the hub, but inter-spoke traffic is being routed through the hub instead of using shortcut tunnels. What configuration is missing on the hub to allow ADVPN shortcut establishment?

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

Disable route redistribution from OSPF into the VPN tunnel interface on the hub

For ADVPN to work, the hub must have 'auto-discovery-sender' enabled and also must not redistribute spoke routes back to other spokes in a way that prevents shortcut. Typically, the hub should not redistribute OSPF routes learned from one spoke into another; ADVPN relies on IKE shortcuts.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • Set the VPN interface type to 'tunnel' instead of 'vlan'

    Why it's wrong here

    Interface type doesn't affect ADVPN.

  • Disable route redistribution from OSPF into the VPN tunnel interface on the hub

    Why this is correct

    If the hub redistributes routes between spokes, traffic will always go through hub. ADVPN requires that OSPF does not redistribute; shortcuts are triggered by IKE.

  • Enable 'auto-discovery-sender' on the hub and 'auto-discovery-forwarder' on spokes

    Why it's wrong here

    'auto-discovery-forwarder' is not a valid setting; spokes use 'auto-discovery-receiver'.

  • Configure a static route for inter-spoke traffic on the hub

    Why it's wrong here

    Static routes would make traffic hub-dependent, not shortcut.

Visual reference

R1 R2 R3 R4 10 100 10 100 OSPF picks R1→R2→R4 (cost 20) over R1→R3→R4 (cost 200)

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Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This NSE7 practice question is part of Courseiva's free Fortinet certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the NSE7 exam.