Exam Professional-Data-Engineer Topic 1 Question 319 Discussion

Actual exam question for Google's Professional-Data-Engineer exam
Question #: 319
Topic #: 1

You are selecting services to write and transform JSON messages from Cloud Pub/Sub to BigQuery for a
data pipeline on Google Cloud. You want to minimize service costs. You also want to monitor and
accommodate input data volume that will vary in size with minimal manual intervention. What should you
do?

A. Use Cloud Dataflow to run your transformations. Monitor the total execution time for a sampling of jobs.
Configure the job to use non-default Compute Engine machine types when needed. B. Use Cloud Dataproc to run your transformations. Use the diagnosecommand to generate an
operational output archive. Locate the bottleneck and adjust cluster resources. C. Use Cloud Dataproc to run your transformations. Monitor CPU utilization for the cluster. Resize the
number of worker nodes in your cluster via the command line. D. Use Cloud Dataflow to run your transformations. Monitor the job system lag with Stackdriver. Use the
default autoscaling setting for worker instances.

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