Cisco 400-007 Exam - Topic 3 Question 61 Discussion

Actual exam question for Cisco's 400-007 exam

Question #: 61
Topic #: 3

Company XYZ Is running a redundant private WAN network using OSPF as the underlay protocol The current design accommodates for redundancy In the network, but it Is taking over 30 seconds for the network to reconverge upon failure Which technique can be Implemented In the design to detect such a failure in a subsecond?

ASTP

Bfate sharing

COSPF LFA

DBFD

Eflex links

Show Suggested Answer

Suggested Answer: E

by Amber at Apr 06, 2025, 10:26 AM

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Ressie

3 months ago

30 seconds? Wow, that seems way too long for reconvergence!

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Joanna

3 months ago

Flex links? Never heard of that being used for this.

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Harley

3 months ago

OSPF LFA is great for fast reroute!

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Ira

4 months ago

BFD is the way to go for subsecond detection.

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Bette

4 months ago

I thought STP was for loop prevention, not failure detection?

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Tawny

4 months ago

OSPF LFA sounds familiar, but I feel like BFD is the more common technique for subsecond failure detection.

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Sueann

4 months ago

I’m a bit confused about fate sharing. I don’t recall it being related to rapid failure detection in OSPF.

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Jacquline

5 months ago

I think I practiced a similar question where BFD was mentioned as a solution for faster failure detection. It might be the answer.

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Ben

5 months ago

I remember studying OSPF and how it can take time to reconverge, but I’m not sure if BFD is the right choice here.

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Tricia

5 months ago

I'm a bit confused on the differences between some of these options like fate sharing and flex links. I'll need to do some research to understand which one is most appropriate here.

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Gianna

5 months ago

I'm leaning towards D. BFD since the question specifically asks for a subsecond failure detection technique, and that seems to fit the bill.

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Vicki

5 months ago

OSPF LFA could also be a good option to consider. It provides fast convergence without needing to configure an additional protocol like BFD.

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Carmelina

5 months ago

Hmm, I'm not too familiar with BFD. I'll need to review the details of how it works to be sure it's the right choice here.

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Johna

6 months ago

I think the answer is D. BFD seems like the best option to quickly detect a network failure and trigger a fast reconvergence.

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Silvana

10 months ago

Gotta love it when the perfect solution is just a simple protocol like BFD. D all the way!

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Thaddeus

10 months ago

Haha, I bet the network admin wishes they had implemented BFD from the start! D is definitely the right answer here.

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Barbra

9 months ago

Definitely, OSPF LFA wouldn't provide the subsecond detection needed like BFD would.

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Royal

9 months ago

STP wouldn't cut it for this scenario, BFD is the best choice.

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Rickie

9 months ago

Yeah, BFD is the way to go for subsecond failure detection.

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Kenneth

9 months ago

I agree, BFD would definitely help with faster convergence.

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Theola

11 months ago

Hmm, I was debating between C and D, but I think D. BFD is the way to go. It's purpose-built for rapid failure detection, which is exactly what they need here.

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Lore

10 months ago

User 3: Agreed, BFD is the best option for subsecond failure detection.

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Wayne

10 months ago

User 2: Yeah, BFD is designed for rapid failure detection.

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Leontine

10 months ago

User 1: I think D. BFD is the way to go.

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Wilda

11 months ago

I'm going with D as well. BFD is the perfect solution for this scenario - it can detect failures much faster than OSPF's normal operation.

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Kristin

9 months ago

I'm going with D as well. BFD is the perfect solution for this scenario - it can detect failures much faster than OSPF's normal operation.

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Carlton

9 months ago

E) flex links

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Bobbye

9 months ago

D) BFD

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Alica

9 months ago

C) OSPF LFA

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Sylvie

9 months ago

B) fate sharing

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Venita

10 months ago

A) STP

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Heike

11 months ago

I'm not sure, but I think OSPF LFA could also be a good option for faster convergence.

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Karan

11 months ago

I agree with Olen, BFD can help detect failures quickly.

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Wenona

11 months ago

D. BFD sounds right to me. It's a great way to get that sub-second failure detection without having to rely on the slower OSPF convergence process.

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Odette

10 months ago

User 4: BFD seems like the most efficient choice for quick failure detection.

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Belen

10 months ago

User 3: I agree, BFD is much faster than waiting for OSPF to reconverge.

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Natalie

10 months ago

User 2: Yeah, BFD is definitely the best option for that.

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Anika

11 months ago

User 1: I think BFD is the way to go for sub-second failure detection.

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Olen

11 months ago

I think the answer is D) BFD.

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Kip

11 months ago

I think the answer is D. BFD (Bidirectional Forwarding Detection) is a protocol designed specifically for quick failure detection, which is exactly what the question is asking for.

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Felicitas

10 months ago

Yes, BFD is the way to go for fast network convergence.

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Reuben

10 months ago

I agree, BFD is the best option for subsecond failure detection.

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