Quick Answer
The correct answer is that both NHRP entries are active and dynamically learned. This is because the output of the show ip nhrp command reveals each entry has a Type of dynamic, meaning they were learned through NHRP registration from spoke routers rather than being statically configured, and the Flags field shows used, confirming that the mappings are currently active and being utilized for traffic forwarding. On the Cisco CCNP ENARSI 300-410 exam, this command is a staple for verifying DMVPN phase 1, 2, or 3 operations, and a common trap is confusing the expiration timer with a failure state—remember that an active entry will always show a non-zero expiration time as it is refreshed by periodic NHRP registrations. A useful memory tip is to associate dynamic with learned and used with active: if you see both, the spoke is successfully registered and passing traffic.
This 300-410 practice question tests your understanding of mpls operations. 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 R1:
R1# show ip nhrp 10.0.0.2/32 via 10.0.0.2, Tunnel0 created 00:15:30, expire 01:44:30
Type: dynamic, Flags: used NBMA address: 192.168.1.2
10.0.0.3/32 via 10.0.0.3, Tunnel0 created 00:10:20, expire 01:49:40
Type: dynamic, Flags: used NBMA address: 192.168.1.3
Based on this output, which statement is correct?
Both NHRP entries are static.
Why wrong: The type is 'dynamic', not static.
Both NHRP entries are active and dynamically learned.
Type dynamic and flags used indicate active dynamic entries.
The NHRP entries have expired.
Why wrong: The expire times are in the future (01:44:30 and 01:49:40).
The NBMA addresses are IPv6 addresses.
Why wrong: The NBMA addresses are IPv4 (192.168.1.2 and 192.168.1.3).
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Both NHRP entries are active and dynamically learned.
The output shows two NHRP entries with 'Type: dynamic', meaning they were learned dynamically (not statically configured). Both have 'Flags: used', indicating they are active. The expiration times show they will expire in about 1 hour 44 minutes and 1 hour 49 minutes, respectively.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Both NHRP entries are static.
Why it's wrong here
The type is 'dynamic', not static.
Both NHRP entries are active and dynamically learned.
Why this is correct
Type dynamic and flags used indicate active dynamic entries.
Related concept
Read the scenario before looking for a memorised answer.
The NHRP entries have expired.
Why it's wrong here
The expire times are in the future (01:44:30 and 01:49:40).
The NBMA addresses are IPv6 addresses.
Why it's wrong here
The NBMA addresses are IPv4 (192.168.1.2 and 192.168.1.3).
Common exam traps
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
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.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the 300-410 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
Identify which 300-410 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
MPLS Operations — This question tests MPLS Operations — Read the scenario before looking for a memorised answer..
The correct answer is: Both NHRP entries are active and dynamically learned. — The output shows two NHRP entries with 'Type: dynamic', meaning they were learned dynamically (not statically configured). Both have 'Flags: used', indicating they are active. The expiration times show they will expire in about 1 hour 44 minutes and 1 hour 49 minutes, respectively.
Identify which 300-410 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.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 18, 2026
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