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Answer: Expose the application by using an external TCP Network Load Balancer.
The correct answer is to expose the application by using an external TCP Network Load Balancer. This type of load balancer preserves the client's IP address, which is crucial for your application's requirement to maintain the original client IP for incoming requests. While a TCP Proxy Load Balancer also preserves the client IP, it is primarily used for its Layer 7 capabilities, which are not necessary in this scenario. Therefore, option A is the best choice.
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To provide access to an application deployed on a managed instance group in Google Compute Engine, which accepts Transmission Control Protocol (TCP) traffic on port 389 and necessitates preserving the client's IP address, you plan to use a load balancer for exposure to the internet. What steps should you take to achieve this?
A
Expose the application by using an external TCP Network Load Balancer.
B
Expose the application by using a TCP Proxy Load Balancer.
C
Expose the application by using an SSL Proxy Load Balancer.
D
Expose the application by using an internal TCP Network Load Balancer.