The answer is that strict uRPF is enabled with the suppress feature disabled, meaning all incoming IPv6 packets on GigabitEthernet0/0 are subject to strict reverse path forwarding verification. This is correct because the command output explicitly shows "IPv6 verify source: strict" and "IPv6 verify source suppress: disabled," indicating no traffic is bypassing the verification process. The suppress feature, when enabled, allows uRPF to be skipped for packets from known or trusted sources, but here its disabled state forces every packet to be checked for a matching source address in the routing table and a valid return path. On the Cisco CCNP ENARSI 300-410 exam, this scenario tests your ability to interpret the show ipv6 interface uRPF strict suppress status output, often appearing in a multiple-choice or simulation question where the trap is confusing "suppress disabled" with a misconfiguration. Remember the key memory tip: "Strict means check every path; suppress disabled means no shortcuts allowed."
300-410 IPv6 Traffic Filtering and uRPF Practice Question
This 300-410 practice question tests your understanding of ipv6 traffic filtering and urpf. 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 uRPF on an interface:
R1# show ipv6 interface GigabitEthernet0/0 | include verify|suppress
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Strict uRPF is enabled, and no suppression is configured, so all incoming packets are subject to strict verification.
The output shows strict uRPF is enabled and the suppress feature is disabled. Suppress allows uRPF to be bypassed for certain traffic (e.g., from known sources).
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.
✓
Strict uRPF is enabled, and no suppression is configured, so all incoming packets are subject to strict verification.
Why this is correct
Correct. Strict uRPF is active and no exceptions are configured.
Related concept
Read the scenario before looking for a memorised answer.
✗
Loose uRPF is enabled with suppression.
Why it's wrong here
Incorrect. It says strict, not loose.
✗
uRPF is disabled on this interface.
Why it's wrong here
Incorrect. It shows enabled.
✗
Suppression is enabled, so uRPF checks are bypassed.
Why it's wrong here
Incorrect. Suppression is disabled.
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.
Trap categories for this question
Command / output trap
Incorrect. It shows enabled.
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 Traffic Filtering and uRPF — This question tests IPv6 Traffic Filtering and uRPF — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Strict uRPF is enabled, and no suppression is configured, so all incoming packets are subject to strict verification. — The output shows strict uRPF is enabled and the suppress feature is disabled. Suppress allows uRPF to be bypassed for certain traffic (e.g., from known sources).
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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 to verify IPv6 uRPF operation:
R1# show ipv6 interface GigabitEthernet0/0 | include verify
IPv6 verify source: strict
What does this output indicate?
medium
✓ A.Strict uRPF is enabled, so the router will drop packets if the source address is not in the routing table or if the best return path is not through the receiving interface.
B.Strict uRPF is enabled, but it only checks if the source address is in the routing table, regardless of interface.
C.Loose uRPF is enabled, which only checks if the source address is in the routing table.
D.uRPF is disabled on this interface.
Why A: The output shows that strict uRPF (unicast Reverse Path Forwarding) is enabled on interface GigabitEthernet0/0. This means the router will check that the source address of incoming IPv6 packets is reachable via the same interface on which the packet arrived.
Last reviewed: Jun 18, 2026
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.