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Google Professional Cloud Network Engineer Exam - Topic 3 Question 50 Discussion

Your end users are located in close proximity to us-east1 and europe-west1. Their workloads need to communicate with each other. You want to minimize cost and increase network efficiency.How should you design this topology?
D) Create 1 VPC with 2 regional subnets. Deploy workloads in these subnets and have them communicate using private RFC1918 IP addresses.
A) Create 2 VPCs, each with their own regions and individual subnets. Create 2 VPN gateways to establish connectivity between these regions.
B) Create 2 VPCs, each with their own region and individual subnets. Use external IP addresses on the instances to establish connectivity between these regions.
C) Create 1 VPC with 2 regional subnets. Create a global load balancer to establish connectivity between the regions.

Google Professional Cloud Network Engineer Exam - Topic 3 Question 50 Discussion

Actual exam question for Google's Professional Cloud Network Engineer exam
Question #: 50
Topic #: 3
[All Professional Cloud Network Engineer Questions]

Your end users are located in close proximity to us-east1 and europe-west1. Their workloads need to communicate with each other. You want to minimize cost and increase network efficiency.

How should you design this topology?

Show Suggested Answer Hide Answer
Suggested Answer: D

https://cloud.google.com/vpc/docs/using-vpc#create-auto-network

We create one VPC network in auto mode that creates one subnet in each Google Cloud region automatically. So, region us-east1 and europe-west1 are in the same network and they can communicate using their internal IP address even though they are in different Regions. They take advantage of Google's global fiber network.


by Rodolfo at May 04, 2022, 03:31 AM

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Alverta
10 months ago
A VPN setup in A could add unnecessary complexity.
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Olen
10 months ago
Wait, can we really use just one VPC for both regions? Sounds risky.
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Rikki
11 months ago
Using private IPs in D is definitely the way to go!
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Haley
11 months ago
I disagree, I think C with a global load balancer is better for scalability.
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Eve
11 months ago
Option D seems like the best choice for cost efficiency.
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Oretha
11 months ago
I’m leaning towards option B, but using external IPs seems risky for security. I need to think more about the implications of that choice.
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Janine
11 months ago
I feel like option C could work too, but I'm uncertain about the global load balancer aspect. Is it really necessary for this scenario?
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Carylon
11 months ago
I remember practicing a similar question where using private IPs was emphasized for cost efficiency. Maybe option D is the way to go?
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Lizette
11 months ago
I think option A might be a good choice since it uses VPN gateways, but I'm not sure if that's the most cost-effective solution.
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Justine
11 months ago
This looks like a tricky one. I'll need to carefully read through the requirements and think about the different workflow configuration options.
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Eun
11 months ago
I'm a bit confused on this one. Let me think through the MLAG setup process again to determine the correct answer.
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Rosendo
11 months ago
I remember something about Layer 3 mode handling packets, but I can't recall if it processes or drops them in this case.
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