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Answer: Configure serverless VPC access.
The correct answer is D. 'Configure serverless VPC access'. This is because serverless VPC access is designed to allow App Engine Standard (which is a serverless environment) to communicate with resources in a VPC network. Since your VPC network is already connected to your on-premises environment through a Cloud VPN tunnel, configuring serverless VPC access will enable your App Engine application to send requests to the on-premises database using internal IP addresses. This approach ensures that the traffic remains within the private network, enhancing security and reducing latency.
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Your company has a support ticketing solution that uses App Engine Standard. The project that contains the App Engine application is already integrated with the company's on-premises environment via a fully connected Virtual Private Cloud (VPC) network using a Cloud VPN tunnel. Currently, you need to enable communication between the App Engine application and a database located in the company's on-premises environment. What configuration should you implement?
A
Configure private Google access for on-premises hosts only.
B
Configure private Google access.
C
Configure private services access.
D
Configure serverless VPC access.