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300-410 Practice Question: Runs the following command to troubleshoot a…
A network engineer runs the following command to troubleshoot a Device Access Control issue:
R1# debug nhrp
NHRP: Receive Resolution Request via Tunnel0 10.1.1.2, target 192.168.1.1 NHRP: Send Resolution Reply via Tunnel0 to 10.1.1.2, target 192.168.1.1
What does this output indicate?
⚠ Common exam trap
Cisco often tests the distinction between NHRP client (spoke) and server (hub) roles by showing debug output; the trap here is that candidates may confuse sending a Resolution Reply with sending a Resolution Request, incorrectly assuming the router is a client.
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 router is acting as a NHRP server and successfully resolves the NBMA address for the target.
The debug output shows the router receiving a Resolution Request and immediately sending a Resolution Reply, which is the behavior of a Next Hop Resolution Protocol (NHRP) server (or hub) that has a mapping for the target 192.168.1.1. The router successfully resolves the Non-Broadcast Multiple Access (NBMA) address (10.1.1.2) for the target, indicating it is acting as a server in a DMVPN or similar overlay network.
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 is acting as a NHRP server and successfully resolves the NBMA address for the target.
Why this is correct
The router receives a request and sends a reply, indicating it has the mapping and is providing resolution.
- ✗
The router is a NHRP client and is requesting resolution for target 192.168.1.1.
Why it's wrong here
The router receives a request, not sends one; it is acting as a server.
- ✗
The router is unable to resolve the target address because it does not have a mapping.
Why it's wrong here
The router sends a reply, which means it has the mapping and can resolve the address.
- ✗
The NHRP process is failing due to a misconfigured authentication key.
Why it's wrong here
There is no indication of authentication failure; the exchange is successful.
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Related to this question
Learn chapter
Introduction to ENARSI Exam and Network Fundamentals
Key term
DMVPN Phase 2
DMVPN Phase 2 is an advanced Cisco routing technology that allows spoke routers to communicate directly with one another without sending traffic through a central hub, using dynamic routing protocols and multipoint GRE tunnels.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 300-410 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 300-410 exam.