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Cisco 300-410 Exam - Topic 4 Question 125 Discussion

Posted by Brent on May 07, 2026 at 07:09 PM

Refer to the exhibit.

Refer to the exhibit. The primary link between R1 and R2 went down but R3 is still advertising the 192.166.200.0/24 network to R1 and the 192.166.100.0/24 network to R2, which creates a loop. Which action resolves the issue?

Suggested Answer: A

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26 comments · newest first
CH
Christiane 2 days ago
True, A is more specific for this scenario.
AR
Arlette 7 days ago
But B doesn't address the loop directly.
CA
Carla 12 days ago
I feel like B could work too.
VA
Valentin 17 days ago
It prevents loops by limiting R3's advertisements.
CH
Christiane 22 days ago
Why A?
VA
Valentin 27 days ago
I think option A is the best choice.
AR
Arlette 1 month ago
This question is tricky!
SH
Shaniqua 1 month ago
I agree, A is the best choice here.
JO
Jordan 1 month ago
True, A directly addresses the loop.
NI
Nickolas 2 months ago
D won't resolve the loop issue effectively.
MO
Mozelle 2 months ago
I lean towards D. Stubbing on R2 might fix it too.
MI
Micaela 2 months ago
But B could reduce routing table size.
TA
Tamesha 2 months ago
A is safer, prevents unnecessary updates.
NA
Narcisa 2 months ago
I think B is better. Summary address could simplify routes.
NI
Nickolas 2 months ago
Option A seems right. EIGRP stub on R3 could help.
SH
Shaniqua 3 months ago
I feel like it's about preventing loops.
JO
Jordan 3 months ago
This question is tricky!
MA
Mattie 3 months ago
Surprised that R3 is still advertising after the primary link failure!
CA
Carin 3 months ago
I disagree, B could also solve the loop issue.
LA
Lauryn 3 months ago
Wait, why would we configure anything on R2? Seems off.
BR
Broderick 3 months ago
I think option A is the best choice here.
YE
Yen 4 months ago
R3 is still advertising networks even with the link down.
MA
Marilynn 4 months ago
I think the eigrp stub command on R2 could be the right move, but I’m a bit confused about how it interacts with R3's advertisements.
NI
Nina 5 months ago
I feel like the summary address option could be a solution, but I can't recall if it directly addresses the loop issue.
LI
Lisandra 6 months ago
This question seems similar to one we practiced where a loop was created due to improper route advertisement. I think configuring a stub might help.
CA
Carrol 6 months ago
I remember studying EIGRP stub configurations, but I'm not sure if it applies here since R3 is still advertising routes.
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