Practice Exams | Professional Data Engineer(Google GCP)

Get ready for GCP Data Engineer certification with 301 real test questions and insights into best practices(Google)

Prepare for the Cloud Professional Data Engineer Certification

Master the skills to design, build, secure, and operate data platforms on G Cloud—covering ingestion, storage, processing, analytics, and ML operationalization.

Why This Certification Matters

Becoming a Professional Data Engineer proves your ability to:

• Design end-to-end data architectures that meet business, reliability, latency, and cost requirements.

• Build and operationalize batch and streaming pipelines using Dataflow (Apache Beam), Pub/Sub, Dataproc, and Datastream.

• Implement strong governance and security with IAM, Cloud KMS/CMEK, VPC Service Controls, DLP, Dataplex, and fine-grained BigQuery access controls.

• Optimize analytics with BigQuery schema design, partitioning/clustering, reservations/slots, and materialized views.

• Operationalize and monitor ML with Vertex AI and BigQuery ML, including feature pipelines, versioning, and drift detection.

What You Get

• 251 unique, high-quality test questions.

• Detailed explanations for both correct and incorrect answers.

• Insights into recommended best practices with references to official documentation.

• 4 capstone scenario sets that mirror real-world data engineering challenges.

• Guidance on leveraging services including BigQuery, Dataflow, Pub/Sub, Dataproc, Bigtable, Spanner, Datastream, Cloud Storage, Dataplex, Data Catalog, Cloud Composer, IAM, Cloud KMS, and VPC Service Controls.

Sample Question

Your company is designing a data-centric architecture. You must process and analyze 900 TB of historical .csv data in G Cloud and will continue to ingest 10 TB/day. Your current internet link is 100 Mbps.

What should you do to ensure efficient and reliable data transfer?

Options:

A. Compress and upload both the archive and daily files using gsutil -m.
B. Lease a Transfer Appliance for the 900 TB archive, then establish Dedicated Interconnect or Partner Interconnect (with Private Access for on-prem) for the 10 TB/day ingestion.
C. Use Transfer Appliance for the archive and a Cloud VPN plus gsutil -m for daily uploads.
D. Use Transfer Appliance for the archive and Cloud VPN for daily uploads.

Incorrect Answers:
A. Uploading 900 TB over 100 Mbps would take months; 10 TB/day (~1 Gbps sustained) also far exceeds available bandwidth.
C. VPN rides the public internet and will still be constrained by the 100 Mbps link; parallel gsutil doesn’t solve the bandwidth limit.
D. Same bandwidth limitation—VPN over a 100 Mbps link cannot sustain 10 TB/day.

Correct Answer:
B. Use Transfer Appliance to seed the 900 TB into Cloud Storage efficiently, then provision Dedicated or Partner Interconnect with Private  Access for on-prem to reliably sustain ~1 Gbps+ for the ongoing 10 TB/day ingestion. This aligns with Google’s recommended approach for large one-time migrations plus high-volume, continuous transfers.

References:

Ready to Pass the Exam?
Test your skills, close knowledge gaps, and earn your Professional Data Engineer certification.