350-401 Architecture Practice Question
A network engineer is deploying a Cisco SD-WAN solution using vManage, vSmart, and vBond controllers. The engineer needs to ensure that the data plane is secure and that tunnels are established between WAN edge devices. Which component is responsible for orchestrating the control plane and distributing policies to WAN edge devices?
⚠ Common exam trap
Watch out — candidates often confuse the management plane role of vManage with the control plane role of vSmart, since both are central to SD-WAN operations but perform different functions.
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
✓
vSmart controller
In Cisco SD-WAN, the vSmart controller is the control plane component. It uses the Overlay Management Protocol (OMP) to distribute routing information and policies to WAN edge devices. The vBond orchestrator handles authentication and discovery, while vManage provides management. The vSmart controller is specifically responsible for orchestrating the control plane and policy distribution.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
vManage
Why it's wrong here
vManage is the management plane component that provides a GUI and API for configuration, monitoring, and troubleshooting. It does not directly distribute control plane policies to WAN edge devices. While it is used to create policies, the actual distribution is performed by the vSmart controller, making vManage incorrect for this specific responsibility.
- ✗
vBond orchestrator
Why it's wrong here
The vBond orchestrator handles initial authentication and NAT traversal, and it helps WAN edge devices discover vSmart and vManage controllers. It does not distribute policies or routing information. Its role is limited to orchestration of connectivity, so it is not responsible for the control plane policy distribution described in the scenario.
- ✗
WAN edge device
Why it's wrong here
WAN edge devices are the data plane endpoints that establish secure tunnels and forward traffic. They receive policies from the vSmart controller but do not orchestrate the control plane themselves. Their role is to enforce policies and participate in the overlay, not to distribute policies to other devices, so this option is incorrect.
- ✓
vSmart controller
Why this is correct
The vSmart controller is the centralized control plane component in Cisco SD-WAN. It distributes routing and policy information to WAN edge devices using the Overlay Management Protocol (OMP). This enables secure tunnel establishment and consistent policy enforcement across the fabric, making it the correct answer for orchestrating the control plane.
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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 Cisco exam blueprint
This 350-401 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 350-401 exam.