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Cisco 300-420 Exam - Topic 15 Question 38 Discussion

How is sub-second failure of a transport link detected in a Cisco SD-WAN network?
B) BFD runs on the IPsec tunnels between WAN Edge routers.
A) Hellos are sent between the WAN Edge routers and the vSmart controller.
C) BGP is used between WAN Edge routers and the vSmart controller.
D) Link state change messages are sent between vSmart controllers.

Cisco 300-420 Exam - Topic 15 Question 38 Discussion

Actual exam question for Cisco's 300-420 exam
Question #: 38
Topic #: 15
[All 300-420 Questions]

How is sub-second failure of a transport link detected in a Cisco SD-WAN network?

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Suggested Answer: B

by Heike at May 07, 2022, 11:39 AM

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Rochell
10 months ago
Hellos are important too, but BFD is key for quick detection.
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Mari
10 months ago
Wait, is it really that fast? Sounds impressive!
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Maryann
11 months ago
I thought BGP was the main protocol here?
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Naomi
11 months ago
Totally agree with that!
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Vincenza
11 months ago
BFD runs on the IPsec tunnels, right?
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Elise
11 months ago
Hmm, this seems straightforward. I'll need to think through the product hierarchy and platform cache updates.
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Elbert
11 months ago
Okay, I think I've got a handle on this. The key is understanding how the Currency field is affected on vendor records and transactions.
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Glendora
11 months ago
I'm pretty sure this is asking about the type of identity created when you register an app with Azure AD. I think the answer is a service principal, but I'll double-check the details just to be sure.
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Vernice
11 months ago
The question is asking which two statements are true, so I'll need to carefully review each option and eliminate the ones that are false.
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