Databricks Certified Data Engineer
Associate
B. Both teams would use the same source of truth for their work - answerA data
organization leader is upset about the data analysis team's reports being different from
the data engineering team's reports. The leader believes the siloed nature of their
organization's data engineering and data analysis architectures is to blame.Which of the
following describes how a data lakehouse could alleviate this issue?
A. Both teams would autoscale their work as data size evolves
B. Both teams would use the same source of truth for their work
C. Both teams would reorganize to report to the same department
D. Both teams would be able to collaborate on projects in real-time
E. Both teams would respond more quickly to ad-hoc requests
A. An automated report needs to be refreshed as quickly as possible. - answerWhich of
the following describes a scenario in which a data team will want to utilize cluster pools?
A. An automated report needs to be refreshed as quickly as possible.
B. An automated report needs to be made reproducible.
C. An automated report needs to be tested to identify errors.
D. An automated report needs to be version-controlled across multiple collaborators.
E. An automated report needs to be runnable by all stakeholders.
C. Databricks web application - answerWhich of the following is hosted completely in
the control plane of the classic Databricks architecture?
A. Worker node
B. JDBC data source
C. Databricks web application
D. Databricks Filesystem
E. Driver node
D. The ability to support batch and streaming workloads - answerWhich of the following
benefits of using the Databricks Lakehouse Platform is provided by Delta Lake?
A. The ability to manipulate the same data using a variety of languages
B. The ability to collaborate in real time on a single notebook
C. The ability to set up alerts for query failures
D. The ability to support batch and streaming workloads
E. The ability to distribute complex data operations
C. Delta tables are stored in a collection of files that contain data, history, metadata, and
other attributes - answerWhich of the following describes the storage organization of a
Delta table?
,A. Delta tables are stored in a single file that contains data, history, metadata, and other
attributes.
B. Delta tables store their data in a single file and all metadata in a collection of files in a
separate location.
C. Delta tables are stored in a collection of files that contain data, history, metadata, and
other attributes.
D. Delta tables are stored in a collection of files that contain only the data stored within
the table.
E. Delta tables are stored in a single file that contains only the data stored within the
table.
C. DELETE FROM my_table WHERE age > 25; - answerWhich of the following code
blocks will remove the rows where the value in column age is greater than 25 from the
existing Delta table my_table and save the updated table?
A. SELECT * FROM my_table WHERE age > 25;
B. UPDATE my_table WHERE age > 25;
C. DELETE FROM my_table WHERE age > 25;
D. UPDATE my_table WHERE age <= 25;
E. DELETE FROM my_table WHERE age <= 25;
A. The VACUUM command was run on the table - answerA data engineer has realized
that they made a mistake when making a daily update to a table. They need to use
Delta time travel to restore the table to a version that is 3 days old. However, when the
data engineer attempts to time travel to the older version, they are unable to restore the
data because the data files have been deleted.Which of the following explains why the
data files are no longer present?
A. The VACUUM command was run on the table
B. The TIME TRAVEL command was run on the table
C. The DELETE HISTORY command was run on the table
D. The OPTIMIZE command was nun on the table
E. The HISTORY command was run on the table
E. Merge - answerWhich of the following Git operations must be performed outside of
Databricks Repos?
A. Commit
B. Pull
C. Push
D. Clone
E. Merge
B. A data lakehouse supports ACID-compliant transactions. - answerWhich of the
following data lakehouse features results in improved data quality over a traditional data
lake?
A. A data lakehouse provides storage solutions for structured and unstructured data.
B. A data lakehouse supports ACID-compliant transactions.
C. A data lakehouse allows the use of SQL queries to examine data.
, D. A data lakehouse stores data in open formats.
E. A data lakehouse enables machine learning and artificial Intelligence workloads.
B. Databricks Repos supports the use of multiple branches - answerA data engineer
needs to determine whether to use the built-in Databricks Notebooks versioning or
version their project using Databricks Repos.Which of the following is an advantage of
using Databricks Repos over the Databricks Notebooks versioning?
A. Databricks Repos automatically saves development progress
B. Databricks Repos supports the use of multiple branches
C. Databricks Repos allows users to revert to previous versions of a notebook
D. Databricks Repos provides the ability to comment on specific changes
E. Databricks Repos is wholly housed within the Databricks Lakehouse Platform
C. Workspace administrator - answerA data engineer has left the organization. The data
team needs to transfer ownership of the data engineer's Delta tables to a new data
engineer. The new data engineer is the lead engineer on the data team.Assuming the
original data engineer no longer has access, which of the following individuals must be
the one to transfer ownership of the Delta tables in Data Explorer?
A. Databricks account representative
B. This transfer is not possible
C. Workspace administrator
D. New lead data engineer
E. Original data engineer
E. spark.table("sales") - answerA data analyst has created a Delta table sales that is
used by the entire data analysis team. They want help from the data engineering team
to implement a series of tests to ensure the data is clean. However, the data
engineering team uses Python for its tests rather than SQL.Which of the following
commands could the data engineering team use to access sales in PySpark?
A. SELECT * FROM sales
B. There is no way to share data between PySpark and SQL.
C. spark.sql("sales")D. spark.delta.table("sales")
E. spark.table("sales")
C. DESCRIBE DATABASE customer360; - answerWhich of the following commands
will return the location of database customer360?
A. DESCRIBE LOCATION customer360;
B. DROP DATABASE customer360;
C. DESCRIBE DATABASE customer360;
D. ALTER DATABASE customer360 SET DBPROPERTIES ('location' = '/user'};
E. USE DATABASE customer360;
D. COMMENT "Contains PII" - answer
D. An ability to work with complex, nested data ingested from JSON files - answerWhich
of the following benefits is provided by the array functions from Spark SQL?
Associate
B. Both teams would use the same source of truth for their work - answerA data
organization leader is upset about the data analysis team's reports being different from
the data engineering team's reports. The leader believes the siloed nature of their
organization's data engineering and data analysis architectures is to blame.Which of the
following describes how a data lakehouse could alleviate this issue?
A. Both teams would autoscale their work as data size evolves
B. Both teams would use the same source of truth for their work
C. Both teams would reorganize to report to the same department
D. Both teams would be able to collaborate on projects in real-time
E. Both teams would respond more quickly to ad-hoc requests
A. An automated report needs to be refreshed as quickly as possible. - answerWhich of
the following describes a scenario in which a data team will want to utilize cluster pools?
A. An automated report needs to be refreshed as quickly as possible.
B. An automated report needs to be made reproducible.
C. An automated report needs to be tested to identify errors.
D. An automated report needs to be version-controlled across multiple collaborators.
E. An automated report needs to be runnable by all stakeholders.
C. Databricks web application - answerWhich of the following is hosted completely in
the control plane of the classic Databricks architecture?
A. Worker node
B. JDBC data source
C. Databricks web application
D. Databricks Filesystem
E. Driver node
D. The ability to support batch and streaming workloads - answerWhich of the following
benefits of using the Databricks Lakehouse Platform is provided by Delta Lake?
A. The ability to manipulate the same data using a variety of languages
B. The ability to collaborate in real time on a single notebook
C. The ability to set up alerts for query failures
D. The ability to support batch and streaming workloads
E. The ability to distribute complex data operations
C. Delta tables are stored in a collection of files that contain data, history, metadata, and
other attributes - answerWhich of the following describes the storage organization of a
Delta table?
,A. Delta tables are stored in a single file that contains data, history, metadata, and other
attributes.
B. Delta tables store their data in a single file and all metadata in a collection of files in a
separate location.
C. Delta tables are stored in a collection of files that contain data, history, metadata, and
other attributes.
D. Delta tables are stored in a collection of files that contain only the data stored within
the table.
E. Delta tables are stored in a single file that contains only the data stored within the
table.
C. DELETE FROM my_table WHERE age > 25; - answerWhich of the following code
blocks will remove the rows where the value in column age is greater than 25 from the
existing Delta table my_table and save the updated table?
A. SELECT * FROM my_table WHERE age > 25;
B. UPDATE my_table WHERE age > 25;
C. DELETE FROM my_table WHERE age > 25;
D. UPDATE my_table WHERE age <= 25;
E. DELETE FROM my_table WHERE age <= 25;
A. The VACUUM command was run on the table - answerA data engineer has realized
that they made a mistake when making a daily update to a table. They need to use
Delta time travel to restore the table to a version that is 3 days old. However, when the
data engineer attempts to time travel to the older version, they are unable to restore the
data because the data files have been deleted.Which of the following explains why the
data files are no longer present?
A. The VACUUM command was run on the table
B. The TIME TRAVEL command was run on the table
C. The DELETE HISTORY command was run on the table
D. The OPTIMIZE command was nun on the table
E. The HISTORY command was run on the table
E. Merge - answerWhich of the following Git operations must be performed outside of
Databricks Repos?
A. Commit
B. Pull
C. Push
D. Clone
E. Merge
B. A data lakehouse supports ACID-compliant transactions. - answerWhich of the
following data lakehouse features results in improved data quality over a traditional data
lake?
A. A data lakehouse provides storage solutions for structured and unstructured data.
B. A data lakehouse supports ACID-compliant transactions.
C. A data lakehouse allows the use of SQL queries to examine data.
, D. A data lakehouse stores data in open formats.
E. A data lakehouse enables machine learning and artificial Intelligence workloads.
B. Databricks Repos supports the use of multiple branches - answerA data engineer
needs to determine whether to use the built-in Databricks Notebooks versioning or
version their project using Databricks Repos.Which of the following is an advantage of
using Databricks Repos over the Databricks Notebooks versioning?
A. Databricks Repos automatically saves development progress
B. Databricks Repos supports the use of multiple branches
C. Databricks Repos allows users to revert to previous versions of a notebook
D. Databricks Repos provides the ability to comment on specific changes
E. Databricks Repos is wholly housed within the Databricks Lakehouse Platform
C. Workspace administrator - answerA data engineer has left the organization. The data
team needs to transfer ownership of the data engineer's Delta tables to a new data
engineer. The new data engineer is the lead engineer on the data team.Assuming the
original data engineer no longer has access, which of the following individuals must be
the one to transfer ownership of the Delta tables in Data Explorer?
A. Databricks account representative
B. This transfer is not possible
C. Workspace administrator
D. New lead data engineer
E. Original data engineer
E. spark.table("sales") - answerA data analyst has created a Delta table sales that is
used by the entire data analysis team. They want help from the data engineering team
to implement a series of tests to ensure the data is clean. However, the data
engineering team uses Python for its tests rather than SQL.Which of the following
commands could the data engineering team use to access sales in PySpark?
A. SELECT * FROM sales
B. There is no way to share data between PySpark and SQL.
C. spark.sql("sales")D. spark.delta.table("sales")
E. spark.table("sales")
C. DESCRIBE DATABASE customer360; - answerWhich of the following commands
will return the location of database customer360?
A. DESCRIBE LOCATION customer360;
B. DROP DATABASE customer360;
C. DESCRIBE DATABASE customer360;
D. ALTER DATABASE customer360 SET DBPROPERTIES ('location' = '/user'};
E. USE DATABASE customer360;
D. COMMENT "Contains PII" - answer
D. An ability to work with complex, nested data ingested from JSON files - answerWhich
of the following benefits is provided by the array functions from Spark SQL?
