Exam Professional Cloud Developer topic 1 question 60 discussion

A and B are wrong for sure https://cloud.google.com/compute/docs/instances/startup-scripts: "A startup script is a file that contains commands that run when a virtual machine (VM) instance boots: Answer is D

C would be correct answer here.

D. Place the unique configuration values in the instance template instance metadata. The instance metadata is a good place to store configuration values that are unique to each managed instance group while using the same machine image across all deployments. This allows you to use the same base image but customize the behavior of each instance group based on the metadata passed to them. Metadata can be accessed by the instances at startup, and scripts can be written to configure the instance based on these values.

D is correct.

Option D is the correct answer. Instance metadata is metadata that is associated with a Compute Engine instance and can be used to pass configuration values to the instance at startup. It can be accessed from within the instance itself, allowing you to use the same custom machine image in all deployments and still provide unique configuration values to each deployment. Option A is not a good solution because the persistent disk is not automatically attached to the instance at startup and is not intended for storing configuration values. Option B is not a good solution because Cloud Bigtable is a NoSQL database, which is not well-suited for storing configuration values. Option C is not a good solution because the startup script is executed after the instance has started, so it cannot be used to pass configuration values to the instance at startup.

Configuration values should be metadata

D is correct

the answer should be D

Correct answer is D

No - In this case it is a stateful MIG - per this link the answer is indeed A: https://cloud.google.com/compute/docs/instance-groups/stateful-migs#per_instance_configs

Each deployment is a separate managed instance group with its own template. Each deployment requires a unique set of configuration values. Either be C or D Configuration values should be metadata Which leads the answer to be D

Option could be D.

Option D: at the time of deployment, configuration values in the instance template instance metadata.