Your company has just acquired another company, and you have been asked to integrate their existing Google Cloud environment into your company's data center. Upon investigation, you discover that some of the RFC 1918 IP ranges being used in the new company's Virtual Private Cloud (VPC) overlap with your data center IP space. What should you do to enable connectivity and make sure that there are no routing conflicts when connectivity is established?

The correct solution is to use Cloud NAT. When IP ranges overlap between two networks you want to connect, Network Address Translation (NAT) is the standard method to resolve the conflict. Cloud NAT allows the overlapping private IP addresses in the new company's VPC to be translated to unique, non-overlapping IP addresses before communicating with your data center, effectively avoiding routing conflicts. The other options are incorrect because: Applying new IP addresses to the entire VPC is a significant operational burden and may not be feasible for an existing, active environment. Applying a custom route advertisement to block the overlapping IP space would prevent any communication between the overlapping ranges, which is not the goal. A firewall rule blocks traffic but does not resolve the underlying IP address conflict that would prevent routing in the first place.