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 snooping policy Interface Policy Role State
Gi0/0/0 GUARD_POLICY device-guard ACTIVE Gi0/0/1 GUARD_POLICY device-guard ACTIVE Gi0/0/2 (default) host ACTIVE
Based on this output, which statement is correct?
⚠ Common exam trap
Cisco often tests the misconception that all interfaces are equally protected by a guard policy, when in fact the (default) policy indicates no custom protection, leaving the interface vulnerable to spoofing attacks.
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 Gi0/0/2 is not protected by the custom guard policy and may be vulnerable to spoofing attacks.
The output shows that Gi0/0/2 is using the default policy with a role of 'host', meaning it is not protected by the custom GUARD_POLICY. The device-guard feature, part of IPv6 First Hop Security, applies only to interfaces with a custom policy; a default policy does not enforce spoofing protection, leaving the interface vulnerable to attacks like rogue RA or ND spoofing.
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 Gi0/0/2 is protected by the GUARD_POLICY policy.
Why it's wrong here
Gi0/0/2 uses the default policy, not GUARD_POLICY.
- ✓
Interface Gi0/0/2 is not protected by the custom guard policy and may be vulnerable to spoofing attacks.
Why this is correct
The default policy provides minimal protection; the custom GUARD_POLICY is not applied to Gi0/0/2.
- ✗
All interfaces are equally protected by the same policy.
Why it's wrong here
Gi0/0/0 and Gi0/0/1 use GUARD_POLICY, while Gi0/0/2 uses the default policy.
- ✗
The role 'host' means Gi0/0/2 is acting as a device-guard.
Why it's wrong here
The role 'host' indicates it is a host-facing interface, not a device-guard.
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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.