Databricks Certified Data Analyst Associate Practice Mode

Community Discussion

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• Chose A0

  - Correct answer : A — Photon accelerates the Parquet file writes underlying Delta Lake table writes, reducing the time spent encoding and persisting the ingested batch data to storage. A . This is correct: Photon accelerates the underlying Parquet write path used by Delta Lake (and Iceberg), so encoding and persisting the batch output to storage completes faster. B . This is incorrect because Photon still writes standard Parquet files under Delta Lake's open format; it does not introduce a proprietary binary layout, and tables remain readable by any Delta-compatible engine. C . This is incorrect because Photon does not alter Delta Lake's transactional guarantees; every write still commits to the transaction log as normal, and log updates are not deferred to a later OPTIMIZE run. D . This is incorrect because Photon does not automatically apply Z-ordering on writes; Z-ordering is a separate, explicitly configured optimization technique, not a side effect of Photon's write acceleration.