Question 1,320 of 2,015

SD-WAN Architecture →mediumMultiple SelectObjective-mapped

CCNP SD-WAN Architecture Practice Question

This 350-401 practice question tests your understanding of sd-wan architecture. 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.

Which two statements about SD-WAN control plane components are true? (Choose two.)

Question 1mediummulti select

Study the full SD-WAN breakdown →

A
The vSmart controller is responsible for distributing OMP routes and policies to all edge devices in the SD-WAN fabric.
Correct because vSmart is the centralized control plane that uses OMP to advertise routes and apply policies.
B
The vBond orchestrator is responsible for authenticating and onboarding vEdge and cEdge routers into the SD-WAN overlay.
Correct because vBond provides NAT traversal and initial authentication, and directs devices to vManage and vSmart.
C
The vManage controller is the primary control plane component that establishes OMP sessions with all edge routers.
Why wrong: Incorrect because vManage is the management plane (NMS), not a control plane; OMP sessions are between vSmart and edge devices.
D
vEdge and cEdge routers are both control plane devices that participate in OMP route exchange.
Why wrong: Incorrect because vEdge and cEdge are data plane devices; they do run OMP but are not control plane components.
E
The OMP protocol runs between vManage and vSmart to exchange routing information and policy updates.
Why wrong: Incorrect because OMP runs between vSmart and edge devices (vEdge/cEdge), not between vManage and vSmart.

Full breakdown with real-world context →

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

✓

The vSmart controller is responsible for distributing OMP routes and policies to all edge devices in the SD-WAN fabric.

The vSmart controller is the centralized control plane that distributes OMP routes and policies, while the vBond orchestrator handles authentication and NAT traversal. vManage is the management plane, not a control plane component. vEdge and cEdge are data plane devices. The OMP protocol runs between vSmart and edge devices, not between vManage and vSmart.

Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.

Answer analysis

Option-by-option breakdown

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

✓
The vSmart controller is responsible for distributing OMP routes and policies to all edge devices in the SD-WAN fabric.
Why this is correct
Correct because vSmart is the centralized control plane that uses OMP to advertise routes and apply policies.
Related concept
Static NAT maps one inside address to one outside address.
✓
The vBond orchestrator is responsible for authenticating and onboarding vEdge and cEdge routers into the SD-WAN overlay.
Why this is correct
Correct because vBond provides NAT traversal and initial authentication, and directs devices to vManage and vSmart.
Related concept
Static NAT maps one inside address to one outside address.
✗
The vManage controller is the primary control plane component that establishes OMP sessions with all edge routers.
Why it's wrong here
Incorrect because vManage is the management plane (NMS), not a control plane; OMP sessions are between vSmart and edge devices.
✗
vEdge and cEdge routers are both control plane devices that participate in OMP route exchange.
Why it's wrong here
Incorrect because vEdge and cEdge are data plane devices; they do run OMP but are not control plane components.
✗
The OMP protocol runs between vManage and vSmart to exchange routing information and policy updates.
Why it's wrong here
Incorrect because OMP runs between vSmart and edge devices (vEdge/cEdge), not between vManage and vSmart.

Common exam traps

Common exam trap: NAT rules depend on direction and matching traffic

NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.

Detailed technical explanation

How to think about this question

NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.

KKey Concepts to Remember

Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.

TExam Day Tips

Identify inside and outside interfaces first.
Check whether the scenario needs static NAT, dynamic NAT or PAT.
Do not confuse NAT matching ACLs with normal packet-filtering intent.

Key takeaway

NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.

Real-world example

How this comes up in practice

A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.

What to study next

Got this wrong? Here's your next step.

Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 350-401 NAT questions on configuration and troubleshooting.

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FAQ

Questions learners often ask

What does this 350-401 question test?

SD-WAN Architecture — This question tests SD-WAN Architecture — Static NAT maps one inside address to one outside address..

What is the correct answer to this question?

The correct answer is: The vSmart controller is responsible for distributing OMP routes and policies to all edge devices in the SD-WAN fabric. — The vSmart controller is the centralized control plane that distributes OMP routes and policies, while the vBond orchestrator handles authentication and NAT traversal. vManage is the management plane, not a control plane component. vEdge and cEdge are data plane devices. The OMP protocol runs between vSmart and edge devices, not between vManage and vSmart.

What should I do if I get this 350-401 question wrong?

What is the key concept behind this question?

Static NAT maps one inside address to one outside address.

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