Question 1,993 of 2,015

SD-Access Architecture →mediumDrag & DropObjective-mapped

Quick Answer

The answer is that the final step in SD-Access fabric endpoint registration is the edge node installing a forwarding entry for the endpoint. This sequence is correct because the process begins when a new endpoint sends an ARP or DHCP request, which the edge node detects, prompting it to register the endpoint’s identity and location with the control plane using LISP. The control plane then updates the map server, and only after this mapping is complete does the edge node install the necessary forwarding entry to enable traffic forwarding. On the ENCOR 350-401 exam, this drag-and-drop task tests your understanding of the fabric’s underlay-to-overlay integration, with a common trap being to place the forwarding entry installation too early, before the control plane has synchronized the endpoint’s location. A reliable memory tip is to think of the sequence as "Detect, Register, Map, Forward"—the edge node cannot install a forwarding path until the map server confirms the endpoint’s location.

350-401 SD-Access Architecture Practice Question

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

Drag and drop the steps of SD-Access fabric endpoint registration 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-Access 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

✓

Endpoint sends ARP or DHCP request

The correct order begins with the endpoint sending an ARP or DHCP request, the edge node detecting the new endpoint, registering it with the control plane (LISP), the control plane updating the map server, and finally the edge node installing the necessary forwarding entries. This sequence ensures the endpoint is properly discovered and integrated into the fabric.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.

Detailed technical explanation

How to think about this question

This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.

KKey Concepts to Remember

Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.

TExam Day Tips

Underline the problem statement mentally.
Watch for words such as best, first, most likely and least administrative effort.
Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Real-world example

How this comes up in practice

A practitioner preparing for the 350-401 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.

What to study next

Got this wrong? Here's your next step.

Identify which 350-401 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

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FAQ

Questions learners often ask

What does this 350-401 question test?

SD-Access Architecture — This question tests SD-Access Architecture — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Endpoint sends ARP or DHCP request — The correct order begins with the endpoint sending an ARP or DHCP request, the edge node detecting the new endpoint, registering it with the control plane (LISP), the control plane updating the map server, and finally the edge node installing the necessary forwarding entries. This sequence ensures the endpoint is properly discovered and integrated into the fabric.

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?

Read the scenario before looking for a memorised answer.

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