Free Data Engineering Practice Tests

Practice for data-engineering certifications with question banks written to match official exam style: scenario stems, multiple choice, and a rationale that explains both the correct answer and the tempting wrong ones. No account is required. Progress stays in your browser.

These tests are study diagnostics, not leaked dumps. Memorizing items will not get you through a live exam pool. Use each miss as a pointer back to vendor docs, a cheat sheet, or a interview-prep topic.

Available tracks

• SnowPro Core (COF-C02) — architecture, warehouses, loading, security, performance, data sharing. Foundational Snowflake credential.
• SnowPro Specialty: Gen AI (GES-C01) — Cortex AI functions, Cortex Search, RAG, embeddings, and AI governance on Snowflake.
• Databricks Data Engineer Associate — Lakehouse, Delta Lake, Spark ELT, incremental pipelines, and Unity Catalog basics.
• AWS Data Engineer Associate (DEA-C01) — ingest and transform on Glue/Kinesis/EMR, stores (S3, Redshift, DynamoDB), operations, and Lake Formation / IAM / KMS.

How scoring works

Each question counts equally. Multi-select items are correct only when every right option is selected and no extra option is selected. After an attempt you see overall percent and a per-topic breakdown so you can restudy a weak domain instead of re-taking the whole bank blindly.

Official exam lengths, passing scores, and domain weights change. Always confirm current details on the vendor certification page before you register. DataEngineer Hub is not affiliated with Snowflake, Databricks, or Amazon Web Services.

Study path that actually works

1. Read the matching cheat sheet or Snowflake certification guide once through.
2. Take a timed practice set. Do not peek at explanations until you lock an answer.
3. For every miss, write one sentence in your own words and open the official doc linked in the rationale.
4. Re-test only the weak topics. Repeat until those domains are consistently above the exam passing score.

Want a structured interview plan instead of a cert exam? Use the interview prep hub. For production tutorials, browse articles.

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