Free Sample Questions to Practice Databricks-Certified-Data-Engineer-Associate Certification Test Engine [Apr-2023]
2023 Valid Databricks-Certified-Data-Engineer-Associate Real Exam Questions, practice GAQM: Date Centre
The GAQM Databricks-Certified-Data-Engineer-Associate (Databricks Certified Data Engineer Associate) Exam is a comprehensive certification program designed to validate the skills and knowledge of data engineers in using Databricks to build and manage data pipelines, perform data analysis, and develop data-driven solutions. The exam is designed for professionals who work with big data and are responsible for designing, building, and maintaining data pipelines using Databricks.
NEW QUESTION # 17
Which of the following describes the relationship between Gold tables and Silver tables?
- A. Gold tables are more likely to contain truthful data than Silver tables.
- B. Gold tables are more likely to contain aggregations than Silver tables.
- C. Gold tables are more likely to contain more data than Silver tables.
- D. Gold tables are more likely to contain valuable data than Silver tables.
- E. Gold tables are more likely to contain a less refined view of data than Silver tables.
Answer: E
NEW QUESTION # 18
Which of the following commands will return the location of database customer360?
- A. DROP DATABASE customer360;
- B. DESCRIBE LOCATION customer360;
- C. DESCRIBE DATABASE customer360;
- D. ALTER DATABASE customer360 SET DBPROPERTIES ('location' = '/user'};
- E. USE DATABASE customer360;
Answer: C
NEW QUESTION # 19
A data engineer needs to create a table in Databricks using data from their organization's existing SQLite database.
They run the following command:
Which of the following lines of code fills in the above blank to successfully complete the task?
- A. sqlite
- B. DELTA
- C. org.apache.spark.sql.jdbc
- D. autoloader
- E. org.apache.spark.sql.sqlite
Answer: E
NEW QUESTION # 20
In order for Structured Streaming to reliably track the exact progress of the processing so that it can handle any kind of failure by restarting and/or reprocessing, which of the following two approaches is used by Spark to record the offset range of the data being processed in each trigger?
- A. Checkpointing and Write-ahead Logs
- B. Checkpointing and Idempotent Sinks
- C. Replayable Sources and Idempotent Sinks
- D. Write-ahead Logs and Idempotent Sinks
- E. Structured Streaming cannot record the offset range of the data being processed in each trigger.
Answer: B
NEW QUESTION # 21
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 COPY INTO statement requires the table to be refreshed to view the copied rows.
- B. The names of the files to be copied were not included with the FILES keyword.
- C. The format of the files to be copied were not included with the FORMAT_OPTIONS keyword.
- D. The PARQUET file format does not support COPY INTO.
- E. The previous day's file has already been copied into the table.
Answer: E
NEW QUESTION # 22
Which of the following benefits of using the Databricks Lakehouse Platform is provided by Delta Lake?
- A. The ability to set up alerts for query failures
- B. The ability to support batch and streaming workloads
- C. The ability to distribute complex data operations
- D. The ability to collaborate in real time on a single notebook
- E. The ability to manipulate the same data using a variety of languages
Answer: B
NEW QUESTION # 23
A data engineer is designing a data pipeline. The source system generates files in a shared directory that is also used by other processes. As a result, the files should be kept as is and will accumulate in the directory. The data engineer needs to identify which files are new since the previous run in the pipeline, and set up the pipeline to only ingest those new files with each run.
Which of the following tools can the data engineer use to solve this problem?
- A. Auto Loader
- B. Delta Lake
- C. Unity Catalog
- D. Databricks SQL
- E. Data Explorer
Answer: A
NEW QUESTION # 24
Which of the following describes the storage organization of a Delta table?
- A. Delta tables are stored in a collection of files that contain data, history, metadata, and other attributes.
- B. Delta tables are stored in a collection of files that contain only the data stored within the table.
- 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 data, history, metadata, and other attributes.
- E. Delta tables are stored in a single file that contains only the data stored within the table.
Answer: A
NEW QUESTION # 25
A data analyst has a series of queries in a SQL program. The data analyst wants this program to run every day.
They only want the final query in the program to run on Sundays. They ask for help from the data engineering team to complete this task.
Which of the following approaches could be used by the data engineering team to complete this task?
- A. They could automatically restrict access to the source table in the final query so that it is only accessible on Sundays.
- B. They could submit a feature request with Databricks to add this functionality.
- C. They could redesign the data model to separate the data used in the final query into a new table.
- D. They could wrap the queries using PySpark and use Python's control flow system to determine when to run the final query.
- E. They could only run the entire program on Sundays.
Answer: D
NEW QUESTION # 26
A dataset has been defined using Delta Live Tables and includes an expectations clause:
CONSTRAINT valid_timestamp EXPECT (timestamp > '2020-01-01') ON VIOLATION DROP ROW What is the expected behavior when a batch of data containing data that violates these constraints is processed?
- A. Records that violate the expectation cause the job to fail.
- B. Records that violate the expectation are added to the target dataset and recorded as invalid in the event log.
- C. Records that violate the expectation are dropped from the target dataset and recorded as invalid in the event log.
- D. Records that violate the expectation are dropped from the target dataset and loaded into a quarantine table.
- E. Records that violate the expectation are added to the target dataset and flagged as invalid in a field added to the target dataset.
Answer: B
NEW QUESTION # 27
Which of the following describes when to use the CREATE STREAMING LIVE TABLE (formerly CREATE INCREMENTAL LIVE TABLE) syntax over the CREATE LIVE TABLE syntax when creating Delta Live Tables (DLT) tables using SQL?
- A. CREATE STREAMING LIVE TABLE is redundant for DLT and it does not need to be used.
- B. CREATE STREAMING LIVE TABLE should be used when data needs to be processed incrementally.
- C. CREATE STREAMING LIVE TABLE should be used when the subsequent step in the DLT pipeline is static.
- D. CREATE STREAMING LIVE TABLE should be used when data needs to be processed through complicated aggregations.
- E. CREATE STREAMING LIVE TABLE should be used when the previous step in the DLT pipeline is static.
Answer: B
NEW QUESTION # 28
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 TIME TRAVEL command was run on the table
- B. The HISTORY 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 VACUUM command was run on the table
Answer: C
NEW QUESTION # 29
Which of the following describes the relationship between Bronze tables and raw data?
- A. Bronze tables contain more truthful data than raw data.
- B. Bronze tables contain raw data with a schema applied.
- C. Bronze tables contain less data than raw data files.
- D. Bronze tables contain a less refined view of data than raw data.
- E. Bronze tables contain aggregates while raw data is unaggregated.
Answer: E
NEW QUESTION # 30
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 reorganize to report to the same department
- C. Both teams would respond more quickly to ad-hoc requests
- D. Both teams would use the same source of truth for their work
- E. Both teams would be able to collaborate on projects in real-time
Answer: D
NEW QUESTION # 31
Which of the following Git operations must be performed outside of Databricks Repos?
- A. Pull
- B. Commit
- C. Merge
- D. Push
- E. Clone
Answer: E
NEW QUESTION # 32
A data engineer has configured a Structured Streaming job to read from a table, manipulate the data, and then perform a streaming write into a new table.
The cade block used by the data engineer is below:
If the data engineer only wants the query to execute a micro-batch to process data every 5 seconds, which of the following lines of code should the data engineer use to fill in the blank?
- A. trigger("5 seconds")
- B. trigger(once="5 seconds")
- C. trigger(processingTime="5 seconds")
- D. trigger()
- E. trigger(continuous="5 seconds")
Answer: C
NEW QUESTION # 33
An engineering manager wants to monitor the performance of a recent project using a Databricks SQL query.
For the first week following the project's release, the managerwants the query results to be updated every minute. However, the manager is concerned that the compute resources used for the query will be left running and cost the organization a lot of money beyond the first week of the project's release.
Which of the following approaches can the engineering team use to ensure the query does not cost the organization any money beyond the first week of the project's release?
- A. They can set the query's refresh schedule to end after a certain number of refreshes.
- B. They can set a limit to the number of DBUs that are consumed by the SQL Endpoint.
- C. They can set a limit to the number of individuals that are able to manage the query's refresh schedule.
- D. They can set the query's refresh schedule to end on a certain date in the query scheduler.
- E. They cannot ensure the query does not cost the organization money beyond the first week of the project's release.
Answer: D
NEW QUESTION # 34
A 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. New lead data engineer
- B. This transfer is not possible
- C. Workspace administrator
- D. Original data engineer
- E. Databricks account representative
Answer: A
NEW QUESTION # 35
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