Google Cloud Professional Cloud Network Engineer — Question 224

Your organization has a highly available application that is not HTTP-based. The application runs on multiple TCP ports and is hosted in multiple regions. You need to design a solution to load balance the application in the same Shared VPC where the service will be accessed. The IP address header must contain the client's true source IP address. No public internet access is required. What should you do?

Answer options

• A. Configure multiple regional internal proxy Network Load Balancers and enable global access. Use DNS routing policies to balance traffic across regions.
• B. Configure multiple regional internal Application Load Balancers and enable global access. Use DNS routing policies to balance traffic across regions.
• C. Configure a single cross region internal proxy Network Load Balancer.
• D. Configure multiple regional internal passthrough Network Load Balancers and enable global access. Use DNS routing policies to balance traffic across regions.

Correct answer: D

Explanation

The correct answer is D because passthrough Network Load Balancers maintain the original client IP address while balancing traffic across multiple regions without requiring HTTP. The other options either use the wrong type of load balancer or do not meet the requirement of preserving the client's true source IP address.