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?
Click on the arrows to vote for the correct answer
A. B. C. D.D.
VPC Network Peering enables you to peer VPC networks so that workloads in different VPC networks can communicate in private RFC 1918 space.
Traffic stays within Google's network and doesn't traverse the public internet.
https://cloud.google.com/vpc/docs/vpc-peeringThe most cost-effective and network-efficient topology for connecting end-users in us-east1 and europe-west1 while minimizing costs and maximizing network efficiency is to create one VPC with two regional subnets and deploy workloads in these subnets, having them communicate using private RFC1918 IP addresses.
Option A: Creating two VPCs with their own regions and individual subnets and establishing connectivity between these regions using VPN gateways may be a valid solution, but it will be more expensive than the other options since it requires additional resources and configuration. Moreover, it may not be as efficient as having the workloads communicate directly using private IP addresses.
Option B: Creating two VPCs with their own regions and individual subnets and using external IP addresses on instances to establish connectivity between these regions will increase network traffic and may cause security risks. It will also incur additional costs for external IP addresses.
Option C: Creating one VPC with two regional subnets and using a global load balancer to establish connectivity between the regions is not a suitable solution since load balancers are designed to distribute traffic between instances in the same region. It may also add unnecessary complexity to the network topology.
Option D: Creating one VPC with two regional subnets and deploying workloads in these subnets, having them communicate using private RFC1918 IP addresses, is the most cost-effective and network-efficient solution. It enables efficient communication between the workloads without incurring additional costs for external IP addresses or VPN gateways. Additionally, using private IP addresses reduces the risk of unauthorized access to the network.