hardMultiple ChoiceObjective-mapped
350-701 Practice Question: An engineer is designing a FlexVPN deployment…
An engineer is designing a FlexVPN deployment with multiple hub routers and spoke routers. The spokes need to establish tunnels to the closest hub based on latency. Which feature should be configured to achieve dynamic hub selection?
⚠ Common exam trap
Cisco often tests the IKEv2 redirect mechanism as the only standards-based method for dynamic hub selection in FlexVPN, and the trap here is that candidates confuse DMVPN's mGRE/NHRP (which handles spoke-to-spoke tunnels) with the hub-selection problem, leading them to choose Option B.
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
✓
Implement IKEv2 redirect mechanism to direct spokes to the optimal hub.
The IKEv2 redirect mechanism allows a hub to inform a spoke of a more optimal hub based on metrics such as latency or load. The spoke then initiates a new IKEv2 connection to the recommended hub, enabling dynamic hub selection without manual configuration. This is the standard Cisco solution for FlexVPN deployments requiring proximity-based tunnel establishment.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Configure static priority on each hub and use priority-based selection.
Why it's wrong here
Static priority does not adapt to latency changes.
- ✗
Use Multipoint GRE with mGRE and NHRP for dynamic tunnel selection.
Why it's wrong here
mGRE/NHRP is for DMVPN, not FlexVPN dynamic hub selection.
- ✗
Use DHCP option 121 to push static routes for hub selection.
Why it's wrong here
DHCP option 121 pushes routes, not adaptive hub selection.
- ✓
Implement IKEv2 redirect mechanism to direct spokes to the optimal hub.
Why this is correct
IKEv2 redirect allows hubs to redirect spokes to a better hub based on location or latency.
Visual reference
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 by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-701 practice question is part of Courseiva's free Cisco 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 350-701 exam.