Your company has created an application that uploads a report to a Cloud Storage bucket. When the report is uploaded to the bucket, you want to publish a message to a Cloud Pub/Sub topic. You want to

Question

Options

• AConfigure the Cloud Storage bucket to trigger Cloud Pub/Sub notifications when objects are
• BCreate an App Engine application to receive the file; when it is received, publish a message to the
• CCreate a Cloud Function that is triggered by the Cloud Storage bucket.
• DCreate an application deployed in a Google Kubernetes Engine cluster to receive the file; when it

• A
  70% (21)
• B
  7% (2)
• C
  20% (6)
• D
  3% (1)

Explanation

Cloud Storage has a built-in Pub/Sub notification feature (Object Change Notifications) that can be configured with a single gsutil notification create command or via the Console - no custom code required. When an object is created in the bucket, Cloud Storage automatically publishes a message to the specified Pub/Sub topic. This is the minimal-effort solution. Option C (Cloud Functions triggered by Cloud Storage) also works but requires writing and deploying function code. Options B and D (App Engine and GKE) require building, deploying, and maintaining entire application services to receive the file, which is significantly more effort and architectural complexity for this use case.

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