Daily Brick

Five questions. Three minutes. Same for everyone.

A daily Databricks workout: Spark and Delta semantics, the details that decide whether a pipeline is correct or just quiet. Every code question was executed before it shipped, so the answer key is what the engine actually printed, not what a model believed.

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How these questions are made (and what they are not)

Code questions are executed on Spark with Delta Lake before publication, and the run decides the answer key. A question whose printed output stops matching its answer fails the check and cannot ship. The engine version is shown next to each code answer; concept answers carry a doc-cited label and the page they rest on instead.
Questions that depend on Unity Catalog, serverless, or Lakeflow behaviour are not executable locally, so they never carry the executed badge and rest on cited documentation instead.
Every question is original, written from public documentation and release notes. Nothing here is drawn from real exam content, and no result predicts a certification outcome.