How many questions are in the Professional Data Engineer practice bank?

The Certilum bank for the Professional Data Engineer holds 50 Foundation questions across 4 exam domains. Every question ships with a written explanation of why the right answer is right, and each row exists in three wording variants, so a session never repeats itself verbatim.

How long is the Professional Data Engineer exam?

The real Google Cloud exam is timed at around 120 minutes. The Certilum diagnostic mirrors that structure so your practice session feels like test day.

What is the Professional Data Engineer exam complexity score?

We measured 50 questions and scored them 1-10 on a composite of format difficulty: multi-select questions (which require every correct option), scenario-length questions, interactive code questions and explanation depth. The Professional Data Engineer scores 2.0 out of 10, with a per-domain breakdown on the difficulty page.

Is the Professional Data Engineer exam practice free?

Yes. You can run the full diagnostic for free, get domain-level scoring and see which domains cost you the most points before deciding whether to go further.

Which domains should I focus on for the Professional Data Engineer?

The Professional Data Engineer blueprint is split into 4 domains, and the heaviest one carries 30% of the exam. The difficulty breakdown shows where the hardest questions actually sit, so you can spend your study time where it pays.

Free diagnostic practice

Professional Data Engineer

GCP-PDE

The Professional Data Engineer exam assesses the ability to design and build data processing systems, operationalize machine learning models, and ensure solution quality on Google Cloud

120 min

50 bank questions

4 domains

certilum

Start the full practice examProfessional Data Engineer — freshly shuffled Foundation questions, timed, with domain scoring and explanations.

Exam syllabus, organized by domain

The official Google Cloud blueprint, with the real weight each domain carries on test day.

Try a real question

Answer one question from the live bank. Grading happens on our servers, so the answer key never reaches the page.

Try a real question

Sample Professional Data Engineer exam question

Answer this question the same way you would on exam day. No sign-up needed — one random question, three tries to swap it out.

FoundationBuilding and operationalizing data processing systems

Select the two scenarios where Cloud Dataproc is the most appropriate service.

Exam facts at a glance

Every figure below comes from the certification record or from the question bank itself.

Time limit: 120 minutes
Domains: 4
Questions in our bank: 50
Level: PROFESSIONAL
Measured complexity: 2.0 / 10
Question mix: 18 single · 17 multi · 15 interactive

Where the hard questions actually are

We score every question in the bank 1-10 on a reproducible formula. Below is the per-domain breakdown.

Exam complexity score2.0/10Gentle · measured across 50 bank questions

Building and operationalizing data processing systems14 questions · complexity 2.0/10 · Gentle
36% multi-select · 0% scenario · 29% interactive
Designing data processing systems11 questions · complexity 2.0/10 · Gentle
36% multi-select · 0% scenario · 27% interactive
Ensuring solution quality15 questions · complexity 2.0/10 · Gentle
33% multi-select · 0% scenario · 33% interactive
Operationalizing machine learning models10 questions · complexity 1.8/10 · Gentle
30% multi-select · 0% scenario · 30% interactive