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Professional-Data-Engineer Exam Questions & Answers

Google Cloud Certified Professional Data Engineer  •  Google

401 Questions 120 min Updated Sep 2026 99% Pass Rate
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Sample Professional-Data-Engineer Questions

Practice with real exam-style questions, each with the verified correct answer and explanation.

Q1 MultipleChoice

Which of these sources can you not load data into BigQuery from?

Correct Answer: D
Explanation:

You can load data into BigQuery from a file upload, Google Cloud Storage, Google Drive, or Google Cloud Bigtable. It is not possible to load data into BigQuery directly from Google Cloud SQL. One way to get data from Cloud SQL to BigQuery would be to export data from Cloud SQL to Cloud Storage and then load it from there.

Q2 MultipleChoice

Your new customer has requested daily reports that show their net consumption of Google Cloud compute resources and who used the resources. You need to quickly and efficiently generate these daily reports. What should you do?

Correct Answer: B
Explanation:

https://cloud.google.com/logging/docs/view/logs-explorer-interface?cloudshell=true

Q3 MultipleChoice

Government regulations in the banking industry mandate the protection of client's personally identifiable information (PII). Your company requires PII to be access controlled encrypted and compliant with major data protection standards In addition to using Cloud Data Loss Prevention (Cloud DIP) you want to follow Google-recommended practices and use service accounts to control access to PII. What should you do?

Correct Answer: D
Q4 MultipleChoice

You need to orchestrate a pipeline with several Google Cloud services: a batch Dataflow job, then a BigQuery query job followed by a Vertex AI batch prediction. The logic is sequential. You want a lightweight, serverless orchestration solution with minimal operational overhead. What service should you use?

Correct Answer: A
Explanation:

When the requirement specifies a 'lightweight' and 'serverless' orchestration for Google Cloud APIs with 'minimal operational overhead,' Cloud Workflows is the preferred choice over Cloud Composer.

Lightweight and Serverless: Cloud Workflows is a fully managed, HTTP-based orchestration service that scales to zero and has no base cost. It is designed specifically to chain Google Cloud services together using YAML or JSON.

Operational Overhead: Unlike Cloud Composer (which requires managing a Kubernetes-based environment and has a minimum running cost), Workflows is truly serverless with no infrastructure to manage.

Service Integration: Workflows has built-in connectors for Dataflow, BigQuery, and Vertex AI, making it ideal for simple sequential logic.

Correcting other options:

B (Cloud Composer): While it can handle this logic, it is not 'lightweight.' It is better suited for complex data engineering pipelines with non-GCP dependencies.

C (Compute Engine): This is not serverless and requires significant operational overhead to manage the VM and cron state.

D (Dataproc/Oozie): This is a legacy Hadoop-based orchestration tool and is definitely not lightweight or serverless.


'Workflows is a fully managed orchestration platform that executes services in an order that you define... Workflows is serverless, scales to zero, and has no infrastructure to manage. It is ideal for orchestrating Google Cloud services like BigQuery, Dataflow, and Vertex AI with low latency.' (Source: Workflows product overview)

'Use Workflows for low-latency, high-volume, and lightweight orchestration of Google Cloud services.' (Source: Choose an orchestration service)

Q5 MultipleChoice

You are building a new application that you need to collect data from in a scalable way. Data arrives continuously from the application throughout the day, and you expect to generate approximately 150 GB of JSON data per day by the end of the year. Your requirements are:

Decoupling producer from consumer

Space and cost-efficient storage of the raw ingested data, which is to be stored indefinitely

Near real-time SQL query

Maintain at least 2 years of historical data, which will be queried with SQ

Which pipeline should you use to meet these requirements?

Correct Answer: A

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Frequently Asked Questions

Google recommends having at least 3 years of industry experience in data engineering, including designing and building data processing systems. You should also have hands-on experience with Google Cloud Platform services like BigQuery, Dataflow, and Pub/Sub.

The exam is 2 hours long and consists of approximately 50 multiple-choice and multiple-select questions. You need to score at least 70% to pass the certification.

The exam covers designing data processing systems, building and operationalizing data processing systems, analyzing data and enabling data science, and ensuring solution quality. Key areas include data pipelines, data warehousing, real-time analytics, and machine learning integration with Google Cloud services.

The certification exam costs $200 USD, though prices may vary by region and currency. Google occasionally offers discounts and promotional codes for their certification exams.

The certification is valid for 3 years from the date you pass the exam. After 3 years, you must retake the exam to maintain your certified status.
Exam Details
  • Exam CodeProfessional-Data-Engineer
  • VendorGoogle
  • Total Questions401
  • Duration120 min
  • LanguageEnglish
  • Last UpdatedSep 1, 2026
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