Google Cloud Professional Cloud Architect — Question 32

You are migrating your on-premises solution to Google Cloud in several phases. You will use Cloud VPN to maintain a connection between your on-premises systems and Google Cloud until the migration is completed. You want to make sure all your on-premise systems remain reachable during this period. How should you organize your networking in Google Cloud?

Answer options

• A. Use the same IP range on Google Cloud as you use on-premises
• B. Use the same IP range on Google Cloud as you use on-premises for your primary IP range and use a secondary range that does not overlap with the range you use on-premises
• C. Use an IP range on Google Cloud that does not overlap with the range you use on-premises
• D. Use an IP range on Google Cloud that does not overlap with the range you use on-premises for your primary IP range and use a secondary range with the same IP range as you use on-premises

Correct answer: C

Explanation

The correct answer is C because using a non-overlapping IP range in Google Cloud ensures that there are no routing conflicts between the on-premises and Google Cloud networks, allowing seamless connectivity. Options A and B would lead to IP address conflicts, making it impossible for both environments to communicate effectively. Option D also presents an issue as it includes a secondary range that overlaps with the on-premises range, which is not advisable.