Databricks Databricks-Certified-Data-Engineer-Associate Dumps Questions Answers

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Databricks Databricks-Certified-Data-Engineer-Associate Frequently Asked Questions

Databricks Databricks-Certified-Data-Engineer-Associate Sample Questions

Question # 1

Which two components function in the DB platform architecture's control plane? (Choose two.) 

A. Virtual Machines 
B. Compute Orchestration 
C. Serverless Compute 
D. Compute 
E. Unity Catalog

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Question # 2

Identify the impact of ON VIOLATION DROP ROW and ON VIOLATION FAIL UPDATE for a constraint violation. A data engineer has created an ETL pipeline using Delta Live table to manage their company travel reimbursement detail, they want to ensure that the if the location details has not been provided by the employee, the pipeline needs to be terminated. How can the scenario be implemented? 

A. CONSTRAINT valid_location EXPECT (location = NULL)
 B. CONSTRAINT valid_location EXPECT (location != NULL) ON VIOLATION FAIL UPDATE 
C. CONSTRAINT valid_location EXPECT (location != NULL) ON DROP ROW 
D. CONSTRAINT valid_location EXPECT (location != NULL) ON VIOLATION FAIL 

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Question # 3

Which method should a Data Engineer apply to ensure Workflows are being triggered on schedule? 

A. Scheduled Workflows require an always-running cluster, which is more expensive but reduces processing latency. 
B. Scheduled Workflows process data as it arrives at configured sources. 
C. Scheduled Workflows can reduce resource consumption and expense since the cluster runs only long enough to execute the pipeline. 
D. Scheduled Workflows run continuously until manually stopped.

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Question # 4

Identify a scenario to use an external table. A Data Engineer needs to create a parquet bronze table and wants to ensure that it gets stored in a specific path in an external location. Which table can be created in this scenario? 

A. An external table where the location is pointing to specific path in external location.
 B. An external table where the schema has managed location pointing to specific path in external location. 
C. A managed table where the catalog has managed location pointing to specific path in external location. 
D. A managed table where the location is pointing to specific path in external location. 

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Question # 5

Identify how the count_if function and the count where x is null can be used Consider a table random_values with below data. What would be the output of below query? select count_if(col > 1) as count_ a. count(*) as count_b.count(col1) as count_c from random_values col1 012 NULL - 23

 A. 3 6 5 
B. 4 6 5 
C. 3 6 6 
D. 4 6 6 

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Question # 6

The Delta transaction log for the ˜students' tables is shown using the ˜DESCRIBE HISTORY students' command. A Data Engineer needs to query the table as it existed before the UPDATE operation listed in the log.    

A. SELECT * FROM students@v4 
B. SELECT * FROM students TIMESTAMP AS OF ˜2024-04-22T 14:32:47.000+00:00' 
C. SELECT * FROM students FROM HISTORY VERSION AS OF 3 
D. SELECT * FROM students VERSION AS OF 5 
E. SELECT * FROM students TIMESTAMP AS OF ˜2024-04-22T 14:32:58.000+00:00' 

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Question # 7

A data engineer needs access to a table new_uable, but they do not have the correct permissions. They can ask the table owner for permission, but they do not know who the table owner is. Which approach can be used to identify the owner of new_table? 

A. There is no way to identify the owner of the table 
B. Review the Owner field in the table's page in the cloud storage solution 
C. Review the Permissions tab in the table's page in Data Explorer 
D. Review the Owner field in the table's page in Data Explorer 

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Question # 8

A data engineer wants to create a new table containing the names of customers who live in France. They have written the following command: CREATE TABLE customersInFrance _____ AS SELECT id, firstName, lastName FROM customerLocations WHERE country = 'FRANCE'; A senior data engineer mentions that it is organization policy to include a table property indicating that the new table includes personally identifiable information (Pll). Which line of code fills in the above blank to successfully complete the task? 

A. COMMENT "Contains PIT 
B. 511 
C. "COMMENT PII" 
D. TBLPROPERTIES PII 

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Question # 9

A data engineer needs to create a table in Databricks using data from their organization's existing SQLite database. They run the following command: CREATE TABLE jdbc_customer360 USING OPTIONS ( url "jdbc:sqlite:/customers.db", dbtable "customer360" ) Which line of code fills in the above blank to successfully complete the task?

A. autoloader 
B. org.apache.spark.sql.jdbc 
C. sqlite 
D. org.apache.spark.sql.sqlite 

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Question # 10

What is stored in a Databricks customer's cloud account? 

A. Data 
B. Cluster management metadata 
C. Databricks web application 
D. Notebooks 

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Question # 11

Which query is performing a streaming hop from raw data to a Bronze table?      

A. Option A 
B. Option  b
C. Option C 
D. Option 

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Question # 12

Which file format is used for storing Delta Lake Table? 

A. Parquet 
B. Delta 
C. SV 
D. JSON 

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Question # 13

Which of the following describes the type of workloads that are always compatible with Auto Loader? 

A. Dashboard workloads 
B. Streaming workloads 
C. Machine learning workloads 
D. Serverless workloads 
E. Batch workloads 

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Question # 14

Which of the following SQL keywords can be used to convert a table from a long format to a wide format? 

A. PIVOT
 B. CONVERT 
C. WHERE 
D. TRANSFORM
 E. SUM 

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Question # 15

A data engineer is working with two tables. Each of these tables is displayed below in its entirety.      Which of the following will be returned by the above query?

A. Option A 
B. Option B 
C. Option C 
D. Option D 
E. Option 

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Question # 16

A data engineering team has noticed that their Databricks SQL queries are running too slowly when they are submitted to a non-running SQL endpoint. The data engineering team wants this issue to be resolved. Which of the following approaches can the team use to reduce the time it takes to return results in this scenario?

 A. They can turn on the Serverless feature for the SQL endpoint and change the Spot Instance Policy to "Reliability Optimized." 
B. They can turn on the Auto Stop feature for the SQL endpoint. 
C. They can increase the cluster size of the SQL endpoint.
 D. They can turn on the Serverless feature for the SQL endpoint. 
E. They can increase the maximum bound of the SQL endpoint's scaling range 

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Question # 17

A data engineer needs to use a Delta table as part of a data pipeline, but they do not know if they have the appropriate permissions. In which of the following locations can the data engineer review their permissions on the table? 

A. Databricks Filesystem 
B. Jobs 
C. Dashboards
 D. Repos 
E. Data Explorer 

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Question # 18

A data engineer is using the following code block as part of a batch ingestion pipeline to read from a composable table: Which of the following changes needs to be made so this code block will work when the transactions table is a stream source?

A. Replace predict with a stream-friendly prediction function 
B. Replace schema(schema) with option ("maxFilesPerTrigger", 1) 
C. Replace "transactions" with the path to the location of the Delta table 
D. Replace format("delta") with format("stream")
 E. Replace spark.read with spark.readStream 

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Question # 19

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. They can navigate to the Runs tab in the Jobs UI to immediately review the processing notebook. 
B. They can navigate to the Tasks tab in the Jobs UI and click on the active run to 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. There is no way to determine why a Job task is running slowly. 
E. They can navigate to the Tasks tab in the Jobs UI to immediately review the processing notebook.

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Question # 20

A data analysis team has noticed that their Databricks SQL queries are running too slowly when connected to their always-on SQL endpoint. They claim that this issue is present when many members of the team are running small queries simultaneously. They ask the data engineering team for help. The data engineering team notices that each of the team's queries uses the same SQL endpoint. Which of the following approaches can the data engineering team use to improve the latency of the team's queries? 

A. They can increase the cluster size of the SQL endpoint. 
B. They can increase the maximum bound of the SQL endpoint's scaling range. 
C. They can turn on the Auto Stop feature for the SQL endpoint. 
D. They can turn on the Serverless feature for the SQL endpoint.
 E. They can turn on the Serverless feature for the SQL endpoint and change the Spot Instance Policy to œReliability Optimized.

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Question # 21

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 manager wants 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 a limit to the number of DBUs that are consumed by the SQL Endpoint. 
B. They can set the query's refresh schedule to end after a certain number of refreshes. 
C. They cannot ensure the query does not cost the organization money beyond the first week of the project's release. 
D. They can set a limit to the number of individuals that are able to manage the query's refresh schedule. 
E. They can set the query's refresh schedule to end on a certain date in the query scheduler. 

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