Courseiva
← 300-410
Full test
mediumMultiple Choice

300-410 Practice Question: Runs the following command on Router R1: R1# show…

A network engineer runs the following command on Router R1:

R1# show dmvpn

Legend: Attrb -> S: Static, D: Dynamic, I: Incomplete N: NATed, L: Local, X: No Socket #Ent -> Number of NHRP entries with same NBMA peer NHS Status: E => Expecting Replies, R => Responding, W => Waiting UpDn Time -> Up or Down Time for a Tunnel ==========================================================================

Interface: Tunnel0, IPv4 NHRP Details

Type:Hub, NHRP Peers:2,

# Ent  Peer NBMA Addr Peer Tunnel Addr State  UpDn Tm Attrb

----- --------------- ---------------- ----- -------- ----- 1 10.1.1.2 172.16.0.2 UP 00:02:15 D 1 10.1.1.3 172.16.0.3 UP 00:01:45 D

Based on this output, which statement is correct?

⚠ Common exam trap

300-410 often tests the interpretation of show dmvpn output; candidates may misread the Type or Attrb fields, or assume that 'D' means down instead of dynamic.

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

✓

Router R1 is a hub with two dynamically registered spokes.

The output shows that Router R1 is a hub (Type: Hub) with two NHRP peers that are dynamically registered (Attrb: D). The peers have tunnel addresses 172.16.0.2 and 172.16.0.3, and both are in UP state. Therefore, R1 is a hub with two dynamically registered spokes.

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 a spoke with two hub peers.

    Why it's wrong here

    The interface reports Type:Hub, so R1 is the hub, not a spoke; spokes register to it. Spoke is tempting because spokes also hold NHRP peer entries, but a spoke's tunnel interface would show Type:Spoke with a single NHS.

  • ✓

    Router R1 is a hub with two dynamically registered spokes.

    Why this is correct

    The Type field shows Hub, and both NHRP peer entries carry the D (Dynamic) attribute, meaning the spokes registered with R1 automatically rather than being statically configured. Two such peers confirm two dynamically registered spokes.

  • ✗

    The NHRP peers are static and not dynamic.

    Why it's wrong here

    Each peer row shows Attrb D, meaning dynamically learned NHRP registrations, so the peers are not static. Static is tempting because static mappings do exist in DMVPN, but those rows would display S; here the hub learned both spokes dynamically.

  • ✗

    One spoke is experiencing a registration failure.

    Why it's wrong here

    Both peers show State UP with recent UpDn timers, indicating successful registrations; no failure is present. Registration failure is tempting because incomplete or down states do signal NHRP problems, but those would appear as I or X attributes instead.

About these practice questions

This 300-410 question is part of Courseiva's 1,401-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →

How Courseiva writes practice questions · Editorial policy

Same concept, more angles

1 more way this is tested on 300-410

These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.

Variation 1. A network engineer runs the following command on Router R1: R1# show dmvpn detail Legend: Attrb -> S: Static, D: Dynamic, I: Incomplete N: NATed, L: Local, X: No Socket #Ent -> Number of NHRP entries with same NBMA peer NHS Status: E => Expecting Replies, R => Responding, W => Waiting UpDn Time -> Up or Down Time for a Tunnel ========================================================================== Interface: Tunnel0, IPv4 NHRP Details Type:Spoke, NHRP Peers:1, # Ent Peer NBMA Addr Peer Tunnel Addr State UpDn Tm Attrb ----- --------------- ---------------- ----- -------- ----- 1 10.1.1.1 172.16.0.1 UP 00:10:00 S Based on this output, what is the problem?

medium
  • ✓ A.The spoke has a static NHRP mapping for the hub, which is correct for phase 1 DMVPN.
  • B.The spoke has dynamically learned the hub.
  • C.The hub is not reachable.
  • D.The spoke is configured as a hub.

Why A: The output shows a spoke router with a single NHRP peer (the hub) marked as static (S). In DMVPN phase 1, spokes only have static mappings for the hub and do not form dynamic spoke-to-spoke tunnels. Therefore, this output is normal and indicates correct configuration for phase 1 DMVPN. There is no problem.

JA

Written and reviewed by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

Last reviewed September 2026 · checked against the official Cisco exam blueprint

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.