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1. The data governance team is reviewing code used for deleting records for compliance with GDPR. They note the following logic is used to delete records from the Delta Lake table named users.

Assuming that user_id is a unique identifying key and that delete_requests contains all users that have requested deletion, which statement describes whether successfully executing the above logic guarantees that the records to be deleted are no longer accessible and why?

A) No; the Delta Lake delete command only provides ACID guarantees when combined with the merge into command.
B) No; files containing deleted records may still be accessible with time travel until a vacuum command is used to remove invalidated data files.
C) No; the Delta cache may return records from previous versions of the table until the cluster is restarted.
D) Yes; Delta Lake ACID guarantees provide assurance that the delete command succeeded fully and permanently purged these records.
E) Yes; the Delta cache immediately updates to reflect the latest data files recorded to disk.

2. The data architect has mandated that all tables in the Lakehouse should be configured as external Delta Lake tables.
Which approach will ensure that this requirement is met?

A) Whenever a table is being created, make sure that the location keyword is used.
B) When tables are created, make sure that the external keyword is used in the create table statement.
C) When configuring an external data warehouse for all table storage. leverage Databricks for all ELT.
D) When the workspace is being configured, make sure that external cloud object storage has been mounted.
E) Whenever a database is being created, make sure that the location keyword is used Get Latest & Actual Certified-Data-Engineer-Professional Exam's Question and Answers from

3. A junior data engineer is migrating a workload from a relational database system to the Databricks Lakehouse. The source system uses a star schema, leveraging foreign key constrains and multi-table inserts to validate records on write.
Which consideration will impact the decisions made by the engineer while migrating this workload?

A) Foreign keys must reference a primary key field; multi-table inserts must leverage Delta Lake's upsert functionality.
B) Committing to multiple tables simultaneously requires taking out multiple table locks and can lead to a state of deadlock.
C) Databricks only allows foreign key constraints on hashed identifiers, which avoid collisions in highly-parallel writes.
D) All Delta Lake transactions are ACID compliance against a single table, and Databricks does not enforce foreign key constraints.
E) Databricks supports Spark SQL and JDBC; all logic can be directly migrated from the source system without refactoring.

4. Which statement describes Delta Lake optimized writes?

A) A shuffle occurs prior to writing to try to group data together resulting in fewer files instead of each executor writing multiple files based on directory partitions.
B) Before a job cluster terminates, OPTIMIZE is executed on all tables modified during the most recent job.
C) Optimized writes logical partitions instead of directory partitions partition boundaries are only Get Latest & Actual Certified-Data-Engineer-Professional Exam's Question and Answers from represented in metadata fewer small files are written.
D) An asynchronous job runs after the write completes to detect if files could be further compacted; yes, an OPTIMIZE job is executed toward a default of 1 GB.

5. The DevOps team has configured a production workload as a collection of notebooks scheduled to run daily using the Jobs UI. A new data engineering hire is onboarding to the team and has requested access to one of these notebooks to review the production logic.
What are the maximum notebook permissions that can be granted to the user without allowing accidental changes to production code or data?

A) Can Run
B) No permissions
C) Can Edit
D) Can Manage
E) Can Read

問題與答案：