NSE7 Advanced VPN and Zero Trust Practice Question
In a hub-and-spoke VPN, spokes cannot communicate with each other directly. The administrator wants to allow direct spoke-to-spoke traffic without routing through the hub. Which technology should be configured?
⚠ Common exam trap
NSE7 often tests the distinction between technologies that merely route traffic (static routes, GRE) and those that dynamically build tunnels (ADVPN), so candidates who focus only on routing rather than tunnel establishment pick the wrong answer.
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
✓
ADVPN with IKEv2
ADVPN (Auto-Discovery VPN) with IKEv2 is Fortinet's proprietary shortcut mechanism that allows spokes to dynamically establish direct tunnels to one another without permanent spoke-to-spoke configuration. The hub acts as a registration point and uses IKEv2 to negotiate shortcut tunnels between spokes on demand, so traffic no longer has to hairpin through the hub. This is the only option that provides dynamic, on-demand direct spoke-to-spoke connectivity.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Static routes on spokes
Why it's wrong here
Static routes only define next-hop reachability; they cannot negotiate IPsec tunnels between spokes, so traffic still has no encrypted path and remains hub-routed. Static routes suit stable topologies where a fixed next hop already exists, such as directing branch traffic to a preferred WAN link.
- ✗
IKEv1 with mode-config
Why it's wrong here
Mode-config assigns a virtual IP to a dial-up client; it does not create spoke-to-spoke tunnels, so traffic continues through the hub. It is intended for remote-access clients needing an address from a pool, not for branch-to-branch shortcut paths.
- ✗
GRE over IPsec
Why it's wrong here
GRE over IPsec encapsulates multicast and routing protocols but still requires a tunnel endpoint pair per spoke; it does not provide the dynamic on-demand shortcut negotiation between any two spokes that ADVPN supplies. GRE suits carrying OSPF or multicast across a permanent site-to-site link.
- ✓
ADVPN with IKEv2
Why this is correct
ADVPN with IKEv2 lets spokes establish on-demand shortcuts directly between themselves, bypassing the hub for spoke-to-spoke traffic. The hub still handles initial route exchange, but once traffic flows, spokes negotiate a direct tunnel, satisfying the requirement to avoid hub routing while retaining centralised policy control.
Quick reference
VPN Protocol Comparison
| Protocol | Port | Encryption | Authentication | Use Case |
|---|---|---|---|---|
| IKEv2 / IPsec | UDP 500 / 4500 | AES-256 | Certificates / PSK | Site-to-site & remote access |
| SSL / TLS VPN | TCP 443 | TLS 1.3 | Certificates / MFA | Clientless remote access |
| L2TP / IPsec | UDP 1701 | AES (IPsec) | PSK / Certificates | Legacy remote access |
| WireGuard | UDP 51820 | ChaCha20 | Public keys | Modern high-performance VPN |
| PPTP | TCP 1723 | MPPE (weak) | MS-CHAPv2 | Legacy — avoid in production |
PPTP is considered insecure. IKEv2/IPsec and SSL VPN are the current recommended options.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Fortinet exam blueprint
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.