Databricks Data Engineer Associate
Which 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 - answerC. Databricks web application
A 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 - answerB. Both teams
would use the same source of truth for their work
Which 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. - answerA. An
automated report needs to be refreshed as quickly as possible.
Which 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 - answerD. The ability to support
batch and streaming workloads
, Which 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. - answerC. Delta tables are stored in a collection of files that contain data, history,
metadata, and other attributes.
Which 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; - answerC. DELETE FROM my_table
WHERE age > 25;
A 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 - answerA. The VACUUM command
was run on the table
Which of the following Git operations must be performed outside of Databricks Repos?
A. Commit
B. Pull
C. Push
D. Clone
E. Merge - answerE. Merge
Which 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 - answerC. Databricks web application
A 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 - answerB. Both teams
would use the same source of truth for their work
Which 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. - answerA. An
automated report needs to be refreshed as quickly as possible.
Which 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 - answerD. The ability to support
batch and streaming workloads
, Which 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. - answerC. Delta tables are stored in a collection of files that contain data, history,
metadata, and other attributes.
Which 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; - answerC. DELETE FROM my_table
WHERE age > 25;
A 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 - answerA. The VACUUM command
was run on the table
Which of the following Git operations must be performed outside of Databricks Repos?
A. Commit
B. Pull
C. Push
D. Clone
E. Merge - answerE. Merge
