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 ipv6 dhcp guard policy Interface Policy Role State
Gi0/0/0 DHCP_GUARD server ACTIVE Gi0/0/1 DHCP_GUARD client ACTIVE Gi0/0/2 (default) client ACTIVE
Based on this output, which statement is correct?
⚠ Common exam trap
Cisco often tests the misconception that the 'client' role allows sending replies, when in fact only the 'server' role permits DHCPv6 server messages, and the 'client' role strictly blocks them.
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
✓
Interface Gi0/0/0 is trusted to send DHCPv6 replies.
The output shows that interface Gi0/0/0 has the role 'server' and is ACTIVE under the DHCPv6 guard policy. In DHCPv6 guard, a port with the role 'server' is trusted to send DHCPv6 replies (advertise and reply messages), while ports with the role 'client' are blocked from sending such messages. Therefore, only Gi0/0/0 is allowed to send DHCPv6 replies.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Interface Gi0/0/0 is trusted to send DHCPv6 replies.
Why this is correct
Role 'server' allows sending DHCP replies.
- ✗
Interface Gi0/0/1 is trusted to send DHCPv6 replies.
Why it's wrong here
Role 'client' blocks DHCP replies.
- ✗
Interface Gi0/0/2 is trusted to send DHCPv6 replies.
Why it's wrong here
Default policy with role 'client' blocks DHCP replies.
- ✗
All interfaces are blocked from sending DHCPv6 replies.
Why it's wrong here
Gi0/0/0 is permitted to send DHCP replies.
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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.