Quick Answer
The correct answer is ADVPN (Auto-Discovery VPN). This technology enables direct spoke-to-spoke communication without routing traffic through the hub by allowing each spoke FortiGate to dynamically discover and establish IPsec tunnels with other spokes on demand, using the hub as a signaling broker rather than a data forwarder. On the Fortinet NSE 4 Network Security Professional exam, this question tests your understanding of how ADVPN reduces hub load and latency in a hub-and-spoke topology, contrasting it with a manual VPN configuration where each spoke-to-spoke tunnel must be statically defined. A common trap is confusing ADVPN with simple dynamic routing over the hub; remember that ADVPN specifically creates direct tunnels between spokes, not just routes through the hub. For a quick memory tip, think "ADVPN = Automatic Direct VPN" — the "Auto-Discovery" part is the key to bypassing the hub for direct spoke-to-spoke traffic.
This NSE4 practice question tests your understanding of authentication and vpn. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A FortiGate in a hub-and-spoke VPN topology has multiple spoke sites connecting via IPsec. The hub administrator wants to enable direct spoke-to-spoke communication without routing traffic through the hub. What technology should be used?
ADVPN (Auto-Discovery VPN)
ADVPN enables dynamic direct tunnels between spokes.
Site-to-site VPN between each spoke pair manually
Why wrong: Manual configuration is possible but not dynamic.
Policy-based VPN with multiple Phase 2 selectors
Why wrong: This does not create dynamic direct tunnels.
SSL VPN tunnel mode
Why wrong: SSL VPN is not typically used for site-to-site.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
ADVPN (Auto-Discovery VPN)
ADVPN (Auto-Discovery VPN) allows spokes to dynamically establish direct tunnels between each other, reducing hub load and latency.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
ADVPN (Auto-Discovery VPN)
Why this is correct
ADVPN enables dynamic direct tunnels between spokes.
Related concept
Read the scenario before looking for a memorised answer.
Site-to-site VPN between each spoke pair manually
Why it's wrong here
Manual configuration is possible but not dynamic.
Policy-based VPN with multiple Phase 2 selectors
Why it's wrong here
This does not create dynamic direct tunnels.
SSL VPN tunnel mode
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the NSE4 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which NSE4 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Authentication and VPN — study guide chapter
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FAQ
Authentication and VPN — This question tests Authentication and VPN — Read the scenario before looking for a memorised answer..
The correct answer is: ADVPN (Auto-Discovery VPN) — ADVPN (Auto-Discovery VPN) allows spokes to dynamically establish direct tunnels between each other, reducing hub load and latency.
Identify which NSE4 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jun 21, 2026
This NSE4 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 NSE4 exam.
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