Question 1,160 of 2,015

SD-WAN Architecture →mediumDrag & DropObjective-mapped

Quick Answer

The correct order for SD-WAN app-aware routing steps is: traffic classification, path performance measurement, SLA metric comparison, best-path selection, and traffic forwarding. This sequence is rooted in the fundamental logic of intent-based networking: you cannot route intelligently until you know what the traffic is, so classification by application comes first, followed by active probing to measure jitter, latency, and loss against configured SLA thresholds. On the ENCOR 350-401 exam, this drag-and-drop task tests your understanding of the SD-WAN control plane’s decision flow, and a common trap is placing path selection before SLA comparison—remember, you must compare metrics against the SLA before you can choose a path. A useful memory tip is the acronym “CMP-SF”: Classify, Measure, Probe (metrics), Select, Forward, which mirrors the logical pipeline from identification to delivery.

350-401 SD-WAN Architecture Practice Question

This 350-401 practice question tests your understanding of sd-wan architecture. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.

Drag and drop the steps of SD-WAN traffic engineering app-aware routing steps into the correct order, from first to last.

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.

Question 1mediumdrag order

Study the full SD-WAN breakdown →

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

✓

Traffic is classified by application

App-aware routing begins with classification of traffic by application, then measuring path performance via probes, comparing metrics against configured SLA thresholds, selecting the best path that meets the SLA, and finally forwarding the traffic over the chosen path.

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

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: Traffic is classified by application — App-aware routing begins with classification of traffic by application, then measuring path performance via probes, comparing metrics against configured SLA thresholds, selecting the best path that meets the SLA, and finally forwarding the traffic over the chosen path.

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

Are there clue words in this question I should notice?

Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.

What is the key concept behind this question?

Static NAT maps one inside address to one outside address.

About these practice questions

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Same concept, more angles

1 more ways this is tested on 350-401

These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.

Variation 1. Drag and drop the steps of SD-WAN traffic engineering app-aware routing steps into the correct order, from first to last.

medium

✓ A.Classify traffic using NBAR or DPI
✓ B.Measure path loss, latency, jitter
✓ C.Compare measured metrics to SLA policy
✓ D.Select best path meeting SLA requirements
✓ E.Steer application traffic over selected path

Why A: App-aware routing begins with classifying traffic by application, then measuring path performance (loss, latency, jitter), comparing against SLA requirements, selecting the best path, and finally steering traffic over that path.

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