Google Cloud Professional Cloud DevOps Engineer — Question 142

Your team is building a service that performs compute-heavy processing on batches of data. The data is processed faster based on the speed and number of CPUs on the machine. These batches of data vary in size and may arrive at any time from multiple third-party sources. You need to ensure that third parties are able to upload their data securely. You want to minimize costs, while ensuring that the data is processed as quickly as possible. What should you do?

Answer options

• A. Provide a secure file transfer protocol (SFTP) server on a Compute Engine instance so that third parties can upload batches of data, and provide appropriate credentials to the server. Create a Cloud Function with a google.storage.object.finalize Cloud Storage trigger. Write code so that the function can scale up a Compute Engine autoscaling managed instance group Use an image pre-loaded with the data processing software that terminates the instances when processing completes.
• B. Provide a Cloud Storage bucket so that third parties can upload batches of data, and provide appropriate Identity and Access Management (IAM) access to the bucket. Use a standard Google Kubernetes Engine (GKE) cluster and maintain two services: one that processes the batches of data, and one that monitors Cloud Storage for new batches of data. Stop the processing service when there are no batches of data to process.
• C. Provide a Cloud Storage bucket so that third parties can upload batches of data, and provide appropriate Identity and Access Management (IAM) access to the bucket. Create a Cloud Function with a google.storage.object.finalize Cloud Storage trigger. Write code so that the function can scale up a Compute Engine autoscaling managed instance group. Use an image pre-loaded with the data processing software that terminates the instances when processing completes.
• D. Provide a Cloud Storage bucket so that third parties can upload batches of data, and provide appropriate Identity and Access Management (IAM) access to the bucket. Use Cloud Monitoring to detect new batches of data in the bucket and trigger a Cloud Function that processes the data. Set a Cloud Function to use the largest CPU possible to minimize the runtime of the processing.

Correct answer: C

Explanation

Option C is correct because it combines secure data uploads via Cloud Storage with a Cloud Function that can trigger processing and scale resources dynamically using an autoscaling managed instance group. Options A and B involve less efficient methods for data handling, and D, while utilizing Cloud Monitoring, does not address the need for dynamic scaling as effectively as the autoscaling managed instance group in C.