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Databricks Databricks-Certified-Data-Engineer-Professional Exam Syllabus Topics:

Databricks Certified Data Engineer Professional Sample Questions:

Question 1

A workspace admin has created a new catalog called finance_data and wants to delegate permission management to a finance team lead without giving them full admin rights. Which privilege should be granted to the finance team lead?

A. GRANT OPTION privilege on the finance_data catalog.
B. ALL PRIVILEGES on the finance_data catalog.
C. Make the finance team lead a metastore admin.
D. MANAGE privilege on the finance_data catalog.

Question 2

Which approach demonstrates a modular and testable way to use DataFrame transform for ETL code in PySpark?

A.

B.

C.

D.

Question 3

The data engineering team maintains the following code:

Assuming that this code produces logically correct results and the data in the source table has been de-duplicated and validated, which statement describes what will occur when this code is executed?

A. An incremental job will leverage running information in the state store to update aggregate values in the gold_customer_lifetime_sales_summary table.
B. An incremental job will detect if new rows have been written to the silver_customer_sales table; if new rows are detected, all aggregates will be recalculated and used to overwrite the gold_customer_lifetime_sales_summary table.
C. A batch job will update the gold_customer_lifetime_sales_summary table, replacing only those rows that have different values than the current version of the table, using customer_id as the primary key.
D. The gold_customer_lifetime_sales_summary table will be overwritten by aggregated values calculated from all records in the silver_customer_sales table as a batch job.
E. The silver_customer_sales table will be overwritten by aggregated values calculated from all records in the gold_customer_lifetime_sales_summary table as a batch job.

Question 4

Which statement describes a key benefit of an end-to-end test?

A. It closely simulates real world usage of your application.
B. It pinpoint errors in the building blocks of your application.
C. It makes it easier to automate your test suite
D. It provides testing coverage for all code paths and branches.

Question 5

A data engineer has a Delta table orders with deletion vectors enabled. The engineer executes the following command:
DELETE FROM orders WHERE status = 'cancelled';
What should be the behavior of deletion vectors when the command is executed?

A. Rows are marked as deleted both in metadata and in files.
B. Files are physically rewritten without the deleted rows.
C. Delta automatically removes all cancelled orders permanently.
D. Rows are marked as deleted in metadata, not in files.

Solutions: