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

Databricks Certified Data Engineer Professional Sample Questions:

1. A user wants to use DLT expectations to validate that a derived table report contains all records from the source, included in the table validation_copy.
The user attempts and fails to accomplish this by adding an expectation to the report table definition.

Which approach would allow using DLT expectations to validate all expected records are present in this table?

A) Define a temporary table that perform a left outer join on validation_copy and report, and define an expectation that no report key values are null
B) Define a view that performs a left outer join on validation_copy and report, and reference this view in DLT expectations for the report table
C) Define a SQL UDF that performs a left outer join on two tables, and check if this returns null values for report key values in a DLT expectation for the report table.
D) Define a function that performs a left outer join on validation_copy and report and report, and check against the result in a DLT expectation for the report table

2. The data architect has decided that once data has been ingested from external sources into the Databricks Lakehouse, table access controls will be leveraged to manage permissions for all production tables and views.
The following logic was executed to grant privileges for interactive queries on a production database to the core engineering group.
GRANT USAGE ON DATABASE prod TO eng;
GRANT SELECT ON DATABASE prod TO eng;
Assuming these are the only privileges that have been granted to the eng group and that these users are not workspace administrators, which statement describes their privileges?

A) Group members are able to list all tables in the prod database but are not able to see the results of any queries on those tables.
B) Group members are able to create, query, and modify all tables and views in the prod database, but cannot define custom functions.
C) Group members have full permissions on the prod database and can also assign permissions to other users or groups.
D) Group members are able to query all tables and views in the prod database, but cannot create or edit anything in the database.
E) Group members are able to query and modify all tables and views in the prod database, but cannot create new tables or views.

3. A junior data engineer has been asked to develop a streaming data pipeline with a grouped aggregation using DataFrame df. The pipeline needs to calculate the average humidity and average temperature for each non-overlapping five-minute interval. Incremental state information should be maintained for 10 minutes for late-arriving data.
Streaming DataFrame df has the following schema:
"device_id INT, event_time TIMESTAMP, temp FLOAT, humidity FLOAT"
Code block:

Choose the response that correctly fills in the blank within the code block to complete this task.

A) slidingWindow("event_time", "10 minutes")
B) awaitArrival("event_time", "10 minutes")
C) await("event_time + `10 minutes'")
D) withWatermark("event_time", "10 minutes")
E) delayWrite("event_time", "10 minutes")

4. The DevOps team has configured a production workload as a collection of notebooks scheduled to run daily using the Jobs Ul. 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) Can Read
C) Can edit
D) Can manage

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

Solutions: