Google Cloud Professional Cloud Developer — Question 49

Your application is built as a custom machine image. You have multiple unique deployments of the machine image. Each deployment is a separate managed instance group with its own template. Each deployment requires a unique set of configuration values. You want to provide these unique values to each deployment but use the same custom machine image in all deployments. You want to use out-of-the-box features of Compute Engine.
What should you do?

Answer options

• A. Place the unique configuration values in the persistent disk.
• B. Place the unique configuration values in a Cloud Bigtable table.
• C. Place the unique configuration values in the instance template startup script.
• D. Place the unique configuration values in the instance template instance metadata.

Correct answer: D

Explanation

The correct answer is D because instance metadata is specifically designed to pass configuration values to instances at startup, making it ideal for this scenario. Options A and B do not provide a direct and efficient means to configure instances at launch, while option C may not be as flexible or straightforward as using instance metadata.