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Cisco 300-420 Exam - Topic 3 Question 115 Discussion

Refer to the exhibit.Refer to the exhibit. A customer experienced an unexpected network outage when the link between R1 and R2 went down. An architect must design a solution to ensure network continuity in the event the link fails again. Which solution should the design include?
B) Make R3 an L1L2 router
A) Make R31 an L1 router.
C) Make Area 0 L2-only
D) Make R11 an L2 router.

Cisco 300-420 Exam - Topic 3 Question 115 Discussion

Actual exam question for Cisco's 300-420 exam
Question #: 115
Topic #: 3
[All 300-420 Questions]

Refer to the exhibit.

Refer to the exhibit. A customer experienced an unexpected network outage when the link between R1 and R2 went down. An architect must design a solution to ensure network continuity in the event the link fails again. Which solution should the design include?

Show Suggested Answer Hide Answer
Suggested Answer: B

by Rosio at Jul 30, 2025, 06:14 PM

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Shanda
8 months ago
Just a fact, R1 and R2 are critical links in the setup.
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Reita
9 months ago
I’m leaning towards making R11 an L2 router instead.
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Gail
9 months ago
Wait, why would we make Area 0 L2-only? Seems risky.
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Lacey
9 months ago
Totally agree, that should help with redundancy!
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Ariel
9 months ago
I think making R3 an L1L2 router is the best option.
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Francene
9 months ago
I vaguely recall that L2 routers can handle more traffic, but I’m not certain if making R11 an L2 router is the right move for this scenario.
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Werner
10 months ago
I’m a bit confused about the area types. I thought making Area 0 L2-only could simplify routing, but would it really help with the outage?
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Princess
10 months ago
I think we practiced a similar question where we had to choose between L1 and L2 routers. I feel like making R3 an L1L2 router could help with failover.
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Skye
10 months ago
I remember we discussed the importance of having redundancy in network designs, but I'm not sure which router type would best ensure continuity here.
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Ruthann
10 months ago
This is a good test of our understanding of OSPF network design. I think I'll start by eliminating the options that don't seem to directly address the issue of network continuity.
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Alverta
11 months ago
I'm a bit confused by the different router levels mentioned in the options. I'll need to refresh my knowledge on OSPF before I can decide on the best approach.
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Carolann
11 months ago
Alright, I've studied the diagram and I'm pretty confident that option B is the right solution here. Making R3 an L1L2 router should provide the network redundancy we need.
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Myra
11 months ago
Okay, let me take a closer look at the exhibit. I think I have an idea, but I want to double-check the details before committing to an answer.
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Emilio
11 months ago
Hmm, this seems like a tricky one. I'll need to carefully review the network diagram and think through the different options.
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Rory
11 months ago
I think making Area 0 L2-only could also be a good solution to ensure network continuity.
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Rashida
1 year ago
But making R3 an L1L2 router would provide better network continuity in case of link failure.
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Charlene
1 year ago
I disagree, I believe making R11 an L2 router would be a better option.
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Rashida
1 year ago
I think the solution should include making R3 an L1L2 router.
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