Professional Cloud Developer Practice Test

Professional Cloud Developer Practice Test practice questions, page 15 of 15, with answer review and explanations.

Question 71

Your company is planning to migrate their on-premises Hadoop environment to the cloud. Increasing storage cost and maintenance of data stored in HDFS is a major concern for your company. You also want to make minimal changes to existing data analytics jobs and existing architecture. How should you proceed with the migration?

  1. Migrate your data stored in Hadoop to BigQuery. Change your jobs to source their information from BigQuery instead of the on-premises Hadoop environment.
  2. Create Compute Engine instances with HDD instead of SSD to save costs. Then perform a full migration of your existing environment into the new one in Compute Engine instances.
  3. Create a Cloud Dataproc cluster on Google Cloud Platform, and then migrate your Hadoop environment to the new Cloud Dataproc cluster. Move your HDFS data into larger HDD disks to save on storage costs.
  4. Create a Cloud Dataproc cluster on Google Cloud Platform, and then migrate your Hadoop code objects to the new cluster. Move your data to Cloud Storage and leverage the Cloud Dataproc connector to run jobs on that data.

Question 72

Your data is stored in Cloud Storage buckets. Fellow developers have reported that data downloaded from Cloud Storage is resulting in slow API performance. You want to research the issue to provide details to the GCP support team. Which command should you run?

  1. gsutil test ג€"o output.json gs://my-bucket
  2. gsutil perfdiag ג€"o output.json gs://my-bucket
  3. gcloud compute scp example-instance:~/test-data ג€"o output.json gs://my-bucket
  4. gcloud services test ג€"o output.json gs://my-bucket

Question 73

You are using Cloud Build build to promote a Docker image to Development, Test, and Production environments. You need to ensure that the same Docker image is deployed to each of these environments. How should you identify the Docker image in your build?

  1. Use the latest Docker image tag.
  2. Use a unique Docker image name.
  3. Use the digest of the Docker image.
  4. Use a semantic version Docker image tag.

Question 74

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 implement a solution that will take a small amount to effort to implement. What should you do?

  1. Configure the Cloud Storage bucket to trigger Cloud Pub/Sub notifications when objects are modified.
  2. Create an App Engine application to receive the file; when it is received, publish a message to the Cloud Pub/Sub topic.
  3. Create a Cloud Function that is triggered by the Cloud Storage bucket. In the Cloud Function, publish a message to the Cloud Pub/Sub topic.
  4. Create an application deployed in a Google Kubernetes Engine cluster to receive the file; when it is received, publish a message to the Cloud Pub/Sub topic.

Question 75

Your teammate has asked you to review the code below, which is adding a credit to an account balance in Cloud Datastore. Which improvement should you suggest your teammate make?

  1. Get the entity with an ancestor query.
  2. Get and put the entity in a transaction.
  3. Use a strongly consistent transactional database.
  4. Don't return the account entity from the function.