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Answer: Use non-RFC 1918 ranges with a single global VPC.
The correct approach is to use non-RFC 1918 ranges with a single global VPC. This solution avoids IP address conflicts with the on-premises networks since non-RFC 1918 ranges are used, and it provides direct connectivity between workloads in all regions and on-premises locations without the need for address translation. A single global VPC simplifies the network architecture and ensures seamless connectivity across all regions and on-premises locations. Options A, B, and C either complicate the network architecture or do not fully meet the requirement for direct connectivity without address translation.
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You are designing a large application deployment on Google Cloud that requires direct connectivity between workloads across all regions and on-premises locations without address translation. However, all RFC 1918 address ranges are already in use on-premises. What is your recommended solution?
A
Use multiple VPC networks with a transit network using VPC Network Peering.
B
Use overlapping RFC 1918 ranges with multiple isolated VPC networks.
C
Use overlapping RFC 1918 ranges with multiple isolated VPC networks and Cloud NAT.
D
Use non-RFC 1918 ranges with a single global VPC.