[Aug-2023] GAQM Databricks-Certified-Data-Engineer-Associate Test Engine PDF - All Free Dumps from ExamBoosts
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The Databricks Certified Data Engineer Associate certification exam is a computer-based exam that consists of 60 multiple-choice questions. Candidates are given two hours to complete the exam, and they must score at least 70% to pass. Databricks-Certified-Data-Engineer-Associate exam is available in multiple languages, including English, Spanish, French, German, and Japanese.
The Databricks Certified Data Engineer Associate Exam certification exam is designed to test the candidate's knowledge of Databricks and their ability to build and manage data pipelines using the platform. Databricks-Certified-Data-Engineer-Associate exam consists of multiple-choice questions and is timed, with a maximum time limit of 120 minutes. To pass the exam, candidates must achieve a minimum score of 70%. Databricks-Certified-Data-Engineer-Associate exam is available online and can be taken from anywhere in the world, making it accessible to data engineers from all backgrounds and locations.
NEW QUESTION # 11
Which of the following describes the relationship between Bronze tables and raw data?
- A. Bronze tables contain less data than raw data files.
- B. Bronze tables contain more truthful data than raw data.
- C. Bronze tables contain a less refined view of data than raw data.
- D. Bronze tables contain raw data with a schema applied.
- E. Bronze tables contain aggregates while raw data is unaggregated.
Answer: E
NEW QUESTION # 12
Which of the following commands can be used to write data into a Delta table while avoiding the writing of duplicate records?
- A. INSERT
- B. IGNORE
- C. DROP
- D. APPEND
- E. MERGE
Answer: E
NEW QUESTION # 13
A 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 is wholly housed within the Databricks Lakehouse Platform
- 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 automatically saves development progress
- E. Databricks Repos provides the ability to comment on specific changes
Answer: B
NEW QUESTION # 14
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 individuals that are able to manage the query's refresh schedule.
- C. They can set the query's refresh schedule to end on a certain date in the query scheduler.
- D. They can set a limit to the number of DBUs that are consumed by the SQL Endpoint.
- E. They cannot ensure the query does not cost the organization money beyond the first week of the project's release.
Answer: C
NEW QUESTION # 15
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 previous day's file has already been copied into the table.
- B. The format of the files to be copied were not included with the FORMAT_OPTIONS keyword.
- C. The names of the files to be copied were not included with the FILES keyword.
- 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.
Answer: A
NEW QUESTION # 16
A data engineer wants to create a new table containing the names of customers that live in France.
They have written the following command:
A senior data engineer mentions that it is organization policy to include a table property indicating that the new table includes personally identifiable information (PII).
Which of the following lines of code fills in the above blank to successfully complete the task?
- A. PII
- B. COMMENT "Contains PII"
- C. "COMMENT PII"
- D. There is no way to indicate whether a table contains PII.
- E. TBLPROPERTIES PII
Answer: E
NEW QUESTION # 17
Which of the following tools is used by Auto Loader process data incrementally?
- A. Data Explorer
- B. Spark Structured Streaming
- C. Unity Catalog
- D. Databricks SQL
- E. Checkpointing
Answer: B
NEW QUESTION # 18
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 wrap the queries using PySpark and use Python's control flow system to determine when to run the final query.
- C. They could redesign the data model to separate the data used in the final query into a new table.
- D. They could submit a feature request with Databricks to add this functionality.
- E. They could only run the entire program on Sundays.
Answer: B
NEW QUESTION # 19
A data engineer is attempting to drop a Spark SQL table my_table. The data engineer wants to delete all table metadata and data.
They run the following command:
DROP TABLE IF EXISTS my_table
While the object no longer appears when they run SHOW TABLES, the data files still exist.
Which of the following describes why the data files still exist and the metadata files were deleted?
- A. The table's data was smaller than 10 GB
- B. The table was managed
- C. The table's data was larger than 10 GB
- D. The table was external
- E. The table did not have a location
Answer: D
NEW QUESTION # 20
A data engineer only wants to execute the final block of a Python program if the Python variable day_of_week is equal to 1 and the Python variable review_period is True.
Which of the following control flow statements should the data engineer use to begin this conditionally executed code block?
- A. if day_of_week == 1 and review_period == "True":
- B. if day_of_week = 1 & review_period: = "True":
- C. if day_of_week == 1 and review_period:
- D. if day_of_week = 1 and review_period = "True":
- E. if day_of_week = 1 and review_period:
Answer: A
NEW QUESTION # 21
A single Job runs two notebooks as two separate tasks. A data engineer has noticed that one of the notebooks is running slowly in the Job's current run. The data engineer asks a tech lead for help in identifying why this might be the case.
Which of the following approaches can the tech lead use to identify why the notebook is running slowly as part of the Job?
- A. There is no way to determine why a Job task is running slowly.
- B. They can navigate to the Runs tab in the Jobs UI to immediately review the processing notebook.
- C. They can navigate to the Runs tab in the Jobs UI and click on the active run to review the processing notebook.
- D. They can navigate to the Tasks tab in the Jobs UI to immediately review the processing notebook.
- E. They can navigate to the Tasks tab in the Jobs UI and click on the active run to review the processing notebook.
Answer: C
NEW QUESTION # 22
Which of the following Structured Streaming queries is performing a hop from a Silver table to a Gold table?
- A.
- B.
- C.
- D.
- E.
Answer: A
NEW QUESTION # 23
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. DELETE FROM my_table WHERE age > 25;
- B. DELETE FROM my_table WHERE age <= 25;
- C. UPDATE my_table WHERE age > 25;
- D. SELECT * FROM my_table WHERE age > 25;
- E. UPDATE my_table WHERE age <= 25;
Answer: A
NEW QUESTION # 24
Which of the following benefits of using the Databricks Lakehouse Platform is provided by Delta Lake?
- A. The ability to support batch and streaming workloads
- B. The ability to manipulate the same data using a variety of languages
- C. The ability to set up alerts for query failures
- D. The ability to collaborate in real time on a single notebook
- E. The ability to distribute complex data operations
Answer: A
NEW QUESTION # 25
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. DELTA
- B. org.apache.spark.sql.sqlite
- C. sqlite
- D. autoloader
- E. org.apache.spark.sql.jdbc
Answer: B
NEW QUESTION # 26
A data engineer has a Job with multiple tasks that runs nightly. Each of the tasks runs slowly because the clusters take a long time to start.
Which of the following actions can the data engineer perform to improve the start up time for the clusters used for the Job?
- A. They can use clusters that are from a cluster pool
- B. They can configure the clusters to autoscale for larger data sizes
- C. They can use jobs clusters instead of all-purpose clusters
- D. They can configure the clusters to be single-node
- E. They can use endpoints available in Databricks SQL
Answer: C
NEW QUESTION # 27
A data engineer is maintaining a data pipeline. Upon data ingestion, the data engineer notices that the source data is starting to have a lower level of quality. The data engineer would like to automate the process of monitoring the quality level.
Which of the following tools can the data engineer use to solve this problem?
- A. Data Explorer
- B. Unity Catalog
- C. Auto Loader
- D. Delta Lake
- E. Delta Live Tables
Answer: D
NEW QUESTION # 28
A data engineer needs to apply custom logic to string column city in table stores for a specific use case. In order to apply this custom logic at scale, the data engineer wants to create a SQL user-defined function (UDF).
Which of the following code blocks creates this SQL UDF?
- A.
- B.
- C.
- D.
- E.
Answer: E
NEW QUESTION # 29
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