Free Access GAQM.Databricks-Certified-Data-Engineer-Associate.v2024-11-27.q107 Practice Test (Page 22)

Question 101

A data engineer has a single-task Job that runs each morning before they begin working. After identifying an upstream data issue, they need to set up another task to run a new notebook prior to the original task.
Which of the following approaches can the data engineer use to set up the new task?

A.They can create a new task in the existing Job and then add the original task as a dependency of the new task.

B.They can clone the existing task in the existing Job and update it to run the new notebook.

C.They can create a new job from scratch and add both tasks to run concurrently.

D.They can create a new task in the existing Job and then add it as a dependency of the original task.

E.They can clone the existing task to a new Job and then edit it to run the new notebook.

Question 102

Which of the following describes the storage organization of a Delta table?

A.Delta tables are stored in a collection of files that contain only the data stored within the table.

B.Delta tables are stored in a single file that contains data, history, metadata, and other attributes.

C.Delta tables store their data in a single file and all metadata in a collection of files in a separate location.

D.Delta tables are stored in a single file that contains only the data stored within the table.

E.Delta tables are stored in a collection of files that contain data, history, metadata, and other attributes.

Question 103

A data engineer runs a statement every day to copy the previous day's sales into the table transactions. Each day's sales are in their own file in the location "/transactions/raw".
Today, the data engineer runs the following command to complete this task:

After running the command today, the data engineer notices that the number of records in table transactions has not changed.
Which of the following describes why the statement might not have copied any new records into the table?

A.The format of the files to be copied were not included with the FORMAT_OPTIONS keyword.

B.The names of the files to be copied were not included with the FILES keyword.

C.The previous day's file has already been copied into the table.

D.The PARQUET file format does not support COPY INTO.

E.The COPY INTO statement requires the table to be refreshed to view the copied rows.

Question 104

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

Question 105

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

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