Exam Professional Cloud Network Engineer topic 1 question 2 discussion

The correct answer is D. However the explanation is wrong. 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. Creating an auto mode network https://cloud.google.com/vpc/docs/using-vpc#create-auto-network

Choose D. Option D is the most appropriate choice for minimizing cost and increasing network efficiency. By creating a single VPC with two regional subnets, you can deploy your workloads in close proximity to your end users in us-east1 and europe-west1. Using private RFC1918 IP addresses for communication within the VPC is a cost-effective and efficient solution. This approach leverages the Google Cloud global network backbone for communication between the regions without the need for external IP addresses or VPN gateways. Options A and B involve using multiple VPCs, which may introduce additional complexity and potentially higher costs, while option C with a global load balancer is typically used for distributing traffic among multiple instances across different regions and may not be necessary for direct communication between workloads.

Answer is 'D'

Answer D.

Definitely D because VPC are global resources and the requirement is to minimize cost and maximize network efficiency (i.e. minimize latency) between workloads. This is visually explained in the newly released "GCP Professional Cloud Network Engineer Certification Companion" book --figure 2-2 page 10. https://a.co/d/9VgidXD

D: VPCs in GCP are global

VPCs in GCP are global so a single VPC with regional subnets will work and no additional elements are needed. 2 VPCs with VPC peering will work as well, but this is not the cheapest option because there will be an egress traffic charge.

D is correct

D is correct answer for me

Answer is D

Answer is D: They will communicate over GCP's Private access Backbone...

D is correct

D is the right one

Agreed its D

D is correct , its easier to configure and allow communication between the users,, if we use two vpc's then we need to add peering or other resources in order to allow communication among them, hence it will will cost ur more as well and the design would not be considered as best practice

D is correct answer for me,

Should be D, there is no networking peering since its a single VPC > I think the topic is talking about letting instances from 2 subnets to communicate to each other. However I do think its a bit confusing. Client needs to talk to the web tier through Global Load Balancer and use host and rules for forwarding to the specific instance group and communication between instance group should be within the same VPC.