Google Professional Cloud Architect
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You are leading a project to migrate your company's on-premises infrastructure to Google Cloud. The migration will happen in multiple phases to ensure minimal downtime and disruption. During the migration period, you plan to use Cloud VPN to establish a secure connection between your on-premises systems and Google Cloud. It is crucial that all your on-premises systems remain accessible throughout the migration. What is the best way to configure your network in Google Cloud to ensure there are no IP address conflicts and maintain connectivity?
Explanation:
The correct answer is C: 'Use an IP range on Google Cloud that does not overlap with the range you use on-premises.' This is important because when using Cloud VPN to connect your on-premises systems with Google Cloud, overlapping IP ranges can cause routing conflicts and make it difficult to manage network traffic effectively. According to Google Cloud documentation, both primary and secondary IP ranges in VPC networks must not overlap with any on-premises IP ranges to avoid such issues. Ensuring non-overlapping IP ranges will maintain connectivity and avoid conflicts during your phased migration.