Free Google Professional-Data-Engineer Exam Questions

Become Google Certified with updated Professional-Data-Engineer exam questions and correct answers

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Total 472 Questions | Updated On: Aug 25, 2026

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Question 1

You are working on a sensitive project involving private user data. You have set up a project on Google Cloud Platform to house your work internally. An external consultant is going to assist with coding a complex transformation in a Google Cloud Dataflow pipeline for your project. How should you maintain users’ privacy?

A : ant the consultant the Viewer role on the project.

B : ant the consultant the Cloud Dataflow Developer role on the project.

C : eate a service account and allow the consultant to log on with it.

D : eate an anonymized sample of the data for the consultant to work with in a different project.

Answer: C

Question 2

Your company is running their first dynamic campaign, serving different offers by analyzing real-time data during the holiday season. The data scientists are collecting terabytes of data that rapidly grows every hour during their 30-day campaign. They are using Google Cloud Dataflow to preprocess the data and collect the feature (signals) data that is needed for the machine learning model in Google Cloud Bigtable. The team is observing suboptimal performance with reads and writes of their initial load of 10 TB of data. They want to improve this performance while minimizing cost. What should they do?

A : define the schema by evenly distributing reads and writes across the row space of the table.

B : performance issue should be resolved over time as the site of the BigDate cluster is increased.

C : design the schema to use a single row key to identify values that need to be updated frequently in the cluster.

D : design the schema to use row keys based on numeric IDs that increase sequentially per user viewing the offers.

Answer: A

Question 3

You are training a deep learning model for a classification task. The precision and recall of the model is quite low. What could you do to improve the precision and recall scores?

A : Use L1 regularization

B : Use L2 regularization

C : Use more training instances

D : Use dropout

Answer: C

Question 4

How would you query specific partitions in a BigQuery table?

A : the DAY column in the WHERE clause

B : the EXTRACT(DAY) clause

C : the __PARTITIONTIME pseudo-column in the WHERE clause

D : DATE BETWEEN in the WHERE clause

Answer: C

Question 5

You work for a large ecommerce company. You are using Pub/Sub to ingest the clickstream data to Google Cloud for analytics. You observe that when a new subscriber connects to an existing topic to analyze data, they are unable to subscribe to older data for an upcoming yearly sale event in two months, you need a solution that, once implemented, will enable any new subscriber to read the last 30 days of data. What should you do?

A : Create a new topic, and publish the last 30 days of data each time a new subscriber connects to an existing topic.

B : Set the topic retention policy to 30 days.

C : Set the subscriber retention policy to 30 days.

D : Ask the source system to re-push the data to Pub/Sub, and subscribe to it.

Answer: B

Page: 1 / 95

Total 472 Questions | Updated On: Aug 25, 2026

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