The answer is that the router is a DMVPN hub with two registered spokes. This conclusion is drawn directly from the DMVPN NHRP show command output, which displays two dynamic NHRP cache entries for 10.0.0.1 and 10.0.0.2, each with a unique registered flag and a corresponding NBMA address. On a DMVPN hub, the NHRP cache collects these dynamic registrations from spokes, whereas a spoke would only show its own static or local mapping. For the ENCOR 350-401 exam, this question tests your ability to interpret the NHRP show command for hub and spoke registration, a common scenario in troubleshooting DMVPN phase 2 or 3. A frequent trap is confusing the hub’s cache with a spoke’s—remember that a hub sees multiple dynamic entries, while a spoke typically sees only the hub’s static entry. Memory tip: “Hub has many, spoke has one” for NHRP registrations.
350-401 VPN Technologies Practice Question
This 350-401 practice question tests your understanding of vpn technologies. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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.
A network engineer runs the following command on Router R8:
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The router is a DMVPN hub with two registered spokes.
The NHRP cache shows two dynamic entries for 10.0.0.1 and 10.0.0.2 with NBMA addresses 192.168.1.1 and 192.168.1.2. Both are registered and unique, indicating a DMVPN spoke registration.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 router has static NHRP mappings configured.
Why it's wrong here
The entries are marked as 'dynamic', not static.
✓
The router is a DMVPN hub with two registered spokes.
Why this is correct
Dynamic entries with 'unique registered' flags indicate spoke registrations on a hub.
Related concept
Read the scenario before looking for a memorised answer.
✗
The NHRP entries are about to expire because the expire time is less than 2 hours.
Why it's wrong here
The expire times are 1 hour 50 minutes and 1 hour 55 minutes, which is normal; they will be refreshed.
✗
The router is a spoke because it has only two entries.
Why it's wrong here
A spoke typically has only one entry (the hub), while a hub has multiple entries from spokes.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 350-401 question in full detail.
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.
VPN Technologies — This question tests VPN Technologies — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The router is a DMVPN hub with two registered spokes. — The NHRP cache shows two dynamic entries for 10.0.0.1 and 10.0.0.2 with NBMA addresses 192.168.1.1 and 192.168.1.2. Both are registered and unique, indicating a DMVPN spoke registration.
What should I do if I get this 350-401 question wrong?
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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