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 traffic
IPv6 statistics: Rcvd: 1000 total, 800 unicast, 200 multicast Sent: 900 total, 700 unicast, 200 multicast Errors: 0 Dropped: 0 ND statistics: NS: 50 received, 40 sent NA: 30 received, 20 sent RS: 10 received, 5 sent RA: 2 received, 8 sent Redirect: 0 received, 0 sent
Based on this output, which statement is correct?
⚠ Common exam trap
Cisco often tests the expected asymmetry in Neighbor Solicitation counts between routers and hosts, where candidates mistakenly think a router should send more NS than it receives, but in practice, routers receive more NS from hosts performing address resolution.
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 router is receiving more Neighbor Solicitations than it is sending, which is expected.
In IPv6, Neighbor Solicitations (NS) are used for address resolution and duplicate address detection. A router typically receives more NS messages than it sends, as hosts send NS to resolve the router's link-layer address, while the router sends NS primarily for DAD or to verify neighbor reachability. The output shows 50 NS received versus 40 sent, which aligns with this expected behavior.
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 router is not sending any Router Advertisements.
Why it's wrong here
8 RAs were sent.
- ✓
The router is receiving more Neighbor Solicitations than it is sending, which is expected.
Why this is correct
NS received (50) vs sent (40) is typical as the router responds to queries.
- ✗
There is a high number of errors in IPv6 traffic.
Why it's wrong here
Errors are 0.
- ✗
The router is dropping many packets.
Why it's wrong here
Dropped is 0.
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JA
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.