You are creating a new GCP project for a production environment. You need strict control over the IP address ranges used by your subnets to prevent overlapping with your on-premises network. How should you configure the VPC network?

Answer options:

Use the default VPC network.

Create an Auto mode VPC network.

Create a Custom mode VPC network and manually define the subnets and IP ranges.

Create a Shared VPC and let Google automatically assign the IP ranges.

How to approach this question

Identify the VPC mode that requires manual subnet creation.

Full Answer

C.Create a Custom mode VPC network and manually define the subnets and IP ranges.✓ Correct

When connecting GCP to an on-premises network (via VPN or Interconnect), you must ensure there are no overlapping IP ranges. Auto mode VPCs automatically create a subnet in every GCP region with predefined IP ranges. Custom mode VPCs start with no subnets, giving you complete control to define specific IP ranges that fit into your enterprise IP address management (IPAM) plan.

Common mistakes

Using the default network for production, leading to routing conflicts when connecting to on-premises.

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