Google Cloud

Google Cloud Certified – Professional Data Engineer

PR000258
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Become a certified Professional Data Engineer with exam code PR000258 to validate your data engineering skills in Google Cloud.

486 questions 0 views Free
Start Mock Test Timed · Full-length · Scored

Questions 321–330 of 486

Q321

You are configuring a Dataflow job. What happens when you set a lower parallelism level than optimal?

  • A Performance may degrade.
  • B Costs will increase.
  • C Output data will be incorrect.
  • D Job will fail to run.
Explanation Lower parallelism can slow down processing, but won't affect costs, output correctness, or job execution.
Q322

Which service is best for real-time analytics on streaming data?

  • A Cloud Pub/Sub
  • B Cloud Storage
  • C Cloud Functions
  • D BigQuery
Explanation Cloud Pub/Sub is designed for real-time data streaming, while others are not focused on streaming analytics.
Q323

A company needs a highly available database with automatic backups; which service should they choose?

  • A Cloud Spanner
  • B Cloud SQL
  • C Datastore
  • D BigQuery
Explanation Cloud Spanner offers high availability and automatic backups, while Cloud SQL and others may not scale as well.
Q324

What happens when data exceeds the capacity of a Cloud Storage bucket?

  • A Data is deleted
  • B Upload fails
  • C Data overwrites previous data
  • D Additional capacity is automatically allocated
Explanation When a bucket reaches its capacity, further uploads will fail; it does not automatically increase storage limits.
Q325

Which service allows real-time data processing in GCP?

  • A Cloud Dataflow
  • B Cloud Storage
  • C Cloud Pub/Sub
  • D Cloud Spanner
Explanation Cloud Dataflow is a managed service for stream and batch processing; the others serve different purposes.
Q326

A company needs to store large amounts of unstructured data. Which option is best?

  • A Bigtable
  • B Cloud SQL
  • C Cloud Storage
  • D Datastore
Explanation Cloud Storage is designed for unstructured data; the others have limitations on data type or structure.
Q327

What happens when you exceed your BigQuery quotas?

  • A Queries fail without any notification
  • B Quota is automatically reset
  • C Charges apply for excessive usage
  • D Queries are throttled until next cycle
Explanation Exceeding quotas typically throttles queries until quotas reset; the other options incorrectly describe quota behavior.
Q328

Which service allows for serverless execution of code?

  • A Cloud Functions
  • B Compute Engine
  • C Cloud Run
  • D App Engine
Explanation Cloud Functions enables event-driven serverless computing; others require server management.
Q329

A company needs to ensure data in BigQuery is protected against accidental deletion. What should they use?

  • A Partitioning
  • B Data retention policies
  • C Labels
  • D Views
Explanation Data retention policies can prevent accidental deletion; others do not offer this feature.
Q330

You are configuring IAM policies for a project. What happens when a user is assigned multiple roles?

  • A All roles merge permissions
  • B Only the highest role applies
  • C User loses previous permissions
  • D Roles must be denied first
Explanation Multiple roles combine permissions, enhancing access—unlike the other options.