Crucial Exams

Microsoft Fabric Data Engineer Associate DP-700 Practice Question

You manage a Microsoft Fabric lakehouse that ingests micro-batches into a Delta table named Sales. After several months, the table contains thousands of very small data files, and analysts report that queries filtering on the OrderDate column now take much longer to finish. With minimal code changes, which action should you perform to most effectively improve scan and query performance on the Sales table?

  • Use COPY INTO to export the data to a single large Parquet file and replace the table.

  • Increase the notebook session's driver memory to provide more Spark cache capacity during queries.

  • Execute OPTIMIZE Sales ZORDER BY (OrderDate); to compact small files and cluster rows on the filter column.

  • Run VACUUM Sales RETAIN 0 HOURS; to delete obsolete data files from the table.

Microsoft Fabric Data Engineer Associate DP-700
Monitor and optimize an analytics solution
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