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Google Professional Cloud Network Engineer Exam - Topic 2 Question 51 Discussion

After a network change window one of your company's applications stops working. The application uses an on-premises database server that no longer receives any traffic from the application. The database server IP address is 10.2.1.25. You examine the change request, and the only change is that 3 additional VPC subnets were created. The new VPC subnets created are 10.1.0.0/16, 10.2.0.0/16, and 10.3.1.0/24/ The on-premises router is advertising 10.0.0.0/8.What is the most likely cause of this problem?
B) The more specific VPC subnet route is taking priority.
A) The less specific VPC subnet route is taking priority.
C) The on-premises router is not advertising a route for the database server.
D) A cloud firewall rule that blocks traffic to the on-premises database server was created during the change.

Google Professional Cloud Network Engineer Exam - Topic 2 Question 51 Discussion

Actual exam question for Google's Professional Cloud Network Engineer exam
Question #: 51
Topic #: 2
[All Professional Cloud Network Engineer Questions]

After a network change window one of your company's applications stops working. The application uses an on-premises database server that no longer receives any traffic from the application. The database server IP address is 10.2.1.25. You examine the change request, and the only change is that 3 additional VPC subnets were created. The new VPC subnets created are 10.1.0.0/16, 10.2.0.0/16, and 10.3.1.0/24/ The on-premises router is advertising 10.0.0.0/8.

What is the most likely cause of this problem?

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Suggested Answer: B

by Sherita at May 28, 2022, 04:14 AM

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Romana
7 months ago
Not sure about that, seems too coincidental with the subnet changes.
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Hermila
7 months ago
Wait, could a firewall rule have been added without us knowing?
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Gracia
7 months ago
I think the on-premises router might not be advertising the right route.
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Meghan
8 months ago
Totally agree, that makes sense!
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Golda
8 months ago
The less specific VPC subnet route is taking priority.
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Alica
8 months ago
I think I read that less specific routes take priority, but I’m not completely confident about how that interacts with the new subnets.
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Marget
8 months ago
I feel like a firewall rule could definitely block traffic, but I don't recall if we covered that in relation to subnet changes.
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Cassi
8 months ago
This seems similar to a practice question we did about VPC routing. I think the on-premises router not advertising the right route could be the problem.
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Della
8 months ago
I remember something about route priority, but I'm not sure if it's the less specific or more specific route that's causing the issue.
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Tamesha
8 months ago
The manifest.mbdb file sounds like it might contain information about the backup, so I'll give that a closer look.
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Jeff
8 months ago
This question seems straightforward, I think the system of record fabric for IT management includes the data objects, their relationships, and inter-dependencies.
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Celeste
8 months ago
I think the key here is understanding what a "line group" is and how distribution algorithms work within that context. I'll need to review my notes on that.
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