The answer is Router R1 is the hub router with two active spoke connections. This is confirmed directly in the `show dmvpn` output, where the line "Type:Hub" explicitly identifies the router’s role, and the two NHRP peers listed with tunnel addresses 10.1.1.2 and 10.1.1.3 are both in the UP state, each showing a "D" attribute in the Attrb column—meaning these are directly connected spokes. On the Cisco CCNP ENARSI 300-410 exam, this command tests your ability to quickly distinguish hub from spoke by reading the Type field, not just counting peers; a common trap is assuming any router with multiple peers is a hub, but only the "Type:Hub" designation confirms it. Remember the memory tip: "Hub says Hub"—the Type field always declares the role, so never guess based on peer count alone.
300-410 Device Access Control Practice Question
This 300-410 practice question tests your understanding of device access control. 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 dmvpn
Interface: Tunnel0, IPv4 NHRP Details
Type:Hub, NHRP Peers:2,
# Ent Peer NBMA Addr Peer Tunnel Add State UpDn Tm Attrb
----- ----------------- --------------- ----- -------- -----
1 10.0.0.2 10.1.1.2 UP 00:10:00 D
2 10.0.0.3 10.1.1.3 UP 00:05:00 D
Based on this output, what is the role of Router R1 in the DMVPN network?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Router R1 is the hub router with two active spoke connections.
The output shows that Router R1 has a Tunnel0 interface configured as a DMVPN hub (Type:Hub) with two NHRP peers (10.1.1.2 and 10.1.1.3) in the UP state. The 'D' attribute in the Attrb column indicates these peers are directly connected spokes, confirming R1 is the hub router with two active spoke connections.
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.
✓
Router R1 is the hub router with two active spoke connections.
Why this is correct
The 'Type:Hub' and two UP peers indicate it is a hub.
Related concept
Read the scenario before looking for a memorised answer.
✗
Router R1 is a spoke router with two hub connections.
Why it's wrong here
The type is Hub, not Spoke.
✗
Router R1 is a spoke router with two other spoke connections.
Why it's wrong here
The type is Hub, and spokes connect to hubs.
✗
Router R1 is not participating in DMVPN because the tunnel is down.
Why it's wrong here
The tunnel is up, as indicated by the UP state of peers.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between the 'Type:Hub' and 'Type:Spoke' fields in the show dmvpn output, and candidates may misinterpret the 'D' attribute as meaning the router is a spoke or that the tunnel is down, when it actually indicates a dynamic peer relationship on the hub.
Detailed technical explanation
How to think about this question
In DMVPN, the hub router maintains NHRP mappings for all spoke routers, which register their real (NBMA) and tunnel (virtual) IP addresses. The 'D' attribute in the show dmvpn output stands for 'dynamic' (or 'direct' in some contexts), indicating the spoke learned the hub via NHRP registration. This output is typical of a Phase 2 or Phase 3 DMVPN hub, where the hub facilitates direct spoke-to-spoke tunnels but still acts as the central registration point.
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.
TExam Day Tips
→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 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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 300-410 question in full detail.
Device Access Control — This question tests Device Access Control — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Router R1 is the hub router with two active spoke connections. — The output shows that Router R1 has a Tunnel0 interface configured as a DMVPN hub (Type:Hub) with two NHRP peers (10.1.1.2 and 10.1.1.3) in the UP state. The 'D' attribute in the Attrb column indicates these peers are directly connected spokes, confirming R1 is the hub router with two active spoke connections.
What should I do if I get this 300-410 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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