This 300-410 practice question tests your understanding of ipv6 first hop security. 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 to verify IPv6 First Hop Security operation:
R1# show ipv6 nd raguard policy TRUSTED
Policy: TRUSTED
Status: Active
Device role: host
Trusted ports: Fa0/1
Untrusted ports: none
RA Guard: enabled
RA Guard policy: allow
ND inspection: enabled
ND inspection policy: INSPECT
What does this output indicate?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The policy TRUSTED allows RAs on Fa0/1 and performs ND inspection using policy INSPECT.
The show command displays the RA Guard policy configuration. The policy TRUSTED is active, applied to port Fa0/1 as trusted, with RA Guard allowing RAs and ND inspection enabled.
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.
✓
The policy TRUSTED allows RAs on Fa0/1 and performs ND inspection using policy INSPECT.
Why this is correct
The output shows RA Guard is enabled with allow action, and ND inspection is enabled with policy INSPECT on the trusted port.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The policy TRUSTED blocks all RAs on Fa0/1 and disables ND inspection.
Why it's wrong here
RA Guard is set to allow, not block, and ND inspection is enabled.
✗
The policy TRUSTED only applies to untrusted ports and has no effect on Fa0/1.
Why it's wrong here
Fa0/1 is listed as a trusted port, so the policy applies to it.
✗
The policy TRUSTED is inactive and not applied to any interface.
Why it's wrong here
Status is Active, and Fa0/1 is a trusted port.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 practitioner preparing for the 300-410 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 300-410 question in full detail.
Identify which 300-410 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
IPv6 First Hop Security — This question tests IPv6 First Hop Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The policy TRUSTED allows RAs on Fa0/1 and performs ND inspection using policy INSPECT. — The show command displays the RA Guard policy configuration. The policy TRUSTED is active, applied to port Fa0/1 as trusted, with RA Guard allowing RAs and ND inspection enabled.
What should I do if I get this 300-410 question wrong?
Identify which 300-410 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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