mediumMultiple ChoiceObjective-mapped
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 ip dhcp conflict IP address Detection method Detection time VRF 192.168.1.20 Ping Mar 01 2020 01:00 AM 192.168.1.21 Gratuitous ARP Mar 01 2020 01:05 AM
Based on this output, what is the problem?
⚠ Common exam trap
Cisco often tests the distinction between a DHCP server that is working but detecting conflicts versus a server that is failing to respond or misconfigured, leading candidates to incorrectly assume the server is broken when it is actually performing its conflict detection duties correctly.
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 DHCP server has detected IP address conflicts, meaning another device on the network is using the same IP addresses.
The `show ip dhcp conflict` command displays IP addresses that the DHCP server has detected as already in use on the network. The detection methods (Ping and Gratuitous ARP) confirm that another device is responding to these addresses, indicating a conflict. This output directly shows that the DHCP server is functioning but has identified conflicts, meaning another host is using the same IP addresses.
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 DHCP server is working normally; conflicts are automatically resolved.
Why it's wrong here
Conflicts are logged and prevent address assignment until cleared.
- ✓
The DHCP server has detected IP address conflicts, meaning another device on the network is using the same IP addresses.
Why this is correct
Conflicts indicate duplicate IP usage on the network.
- ✗
The DHCP server is not responding to client requests.
Why it's wrong here
The output shows conflicts, not a lack of responses.
- ✗
The DHCP pool is misconfigured with overlapping subnets.
Why it's wrong here
Overlapping pools would not cause conflicts; conflicts are from external devices.
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Related to this question
Learn chapter
Introduction to ENARSI Exam and Network Fundamentals
Key term
MPLS Layer 3 VPN
A technology that uses Multiprotocol Label Switching to create secure, scalable virtual private networks that connect multiple sites at the network layer, where the service provider manages routing between customer sites.
Key term
DHCP Client and Server
A DHCP client is any device that requests network configuration settings from a DHCP server, which automatically assigns IP addresses and other parameters to devices on a network.
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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.