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Databricks Updated Databricks-Certified-Data-Engineer-Associate Exam Questions and Answers by leyla

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Databricks Databricks-Certified-Data-Engineer-Associate Exam Overview :

Exam Name: Databricks Certified Data Engineer Associate Exam
Exam Code: Databricks-Certified-Data-Engineer-Associate Dumps
Vendor: Databricks Certification: Databricks Certification
Questions: 99 Q&A's Shared By: leyla
Question 20

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?

Options:

A.

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

B.

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

C.

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

D.

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

E.

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

Discussion
Question 21

A dataset has been defined using Delta Live Tables and includes an expectations clause:

CONSTRAINT valid_timestamp EXPECT (timestamp > '2020-01-01') ON VIOLATION FAIL UPDATE

What is the expected behavior when a batch of data containing data that violates these constraints is processed?

Options:

A.

Records that violate the expectation are dropped from the target dataset and recorded as invalid in the event log.

B.

Records that violate the expectation cause the job to fail.

C.

Records that violate the expectation are dropped from the target dataset and loaded into a quarantine table.

D.

Records that violate the expectation are added to the target dataset and recorded as invalid in the event log.

E.

Records that violate the expectation are added to the target dataset and flagged as invalid in a field added to the target dataset.

Discussion
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Question 22

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?

Options:

A.

They can use endpoints available in Databricks SQL

B.

They can use jobs clusters instead of all-purpose clusters

C.

They can configure the clusters to be single-node

D.

They can use clusters that are from a cluster pool

E.

They can configure the clusters to autoscale for larger data sizes

Discussion
Question 23

A data engineer has been given a new record of data:

id STRING = 'a1'

rank INTEGER = 6

rating FLOAT = 9.4

Which of the following SQL commands can be used to append the new record to an existing Delta table my_table?

Options:

A.

INSERT INTO my_table VALUES ('a1', 6, 9.4)

B.

my_table UNION VALUES ('a1', 6, 9.4)

C.

INSERT VALUES ( 'a1' , 6, 9.4) INTO my_table

D.

UPDATE my_table VALUES ('a1', 6, 9.4)

E.

UPDATE VALUES ('a1', 6, 9.4) my_table

Discussion
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