To make a data pipeline idempotent, what property must the processing logic have?

It must produce the same result even if the input is processed multiple times

It must run as fast as possible

It must use only serverless services

A financial services company runs a Step Functions state machine that processes daily transaction files. Occasionally, a downstream Lambda function fails due to transient database connection timeouts. The team wants to automatically retry failed steps and, after all retries are exhausted, send a notification to the operations team. What is the most efficient way to implement this?

Create a CloudWatch alarm on Lambda errors and trigger an SNS topic

Wrap the Lambda function code in a loop that retries 5 times and then sends an email via SES

Use an SQS dead-letter queue and a separate Lambda consumer to send alerts

Configure a retry in the Step Functions state machine with a catch that publishes to an SNS topic

AWSCertified Data Engineer - Associate

Domain 1Objective 3

Task 1.3: Orchestrate Data Pipelines DEA-C01 Practice Questions (Page 3)

Part of the Content Domain 1: Data Ingestion and Transformation domain, which accounts for 34% of the DEA-C01 exam. AWS does not publish an official question count, but from its 130-minute exam (~50–85 total, ~17–29 in this domain), expect 4–7 from this objective — we provide 26 practice questions to prepare you well beyond it. (estimate)

26questions here

6free pages

8concepts

34%of the exam

Questions 11–15

11foundation · easy
To make a data pipeline idempotent, what property must the processing logic have?
Select an answer first
12foundation · easy
In AWS Step Functions, which state type is used to introduce a delay before proceeding to the next state?
Select an answer first
13application · medium
A financial services company runs a Step Functions state machine that processes daily transaction files. Occasionally, a downstream Lambda function fails due to transient database connection timeouts. The team wants to automatically retry failed steps and, after all retries are exhausted, send a notification to the operations team. What is the most efficient way to implement this?
Select an answer first
14foundation · easy
A data engineering team needs to orchestrate a complex ETL pipeline that includes multiple AWS services, human approval steps, and conditional branching based on data validation results. Which AWS service is most appropriate for this use case?
Select an answer first
15foundation · easy
In an AWS Step Functions state machine, which field is used to define the next state to execute after the current state completes successfully?
Select an answer first

Finished these 5 questions?

Review the revealed explanations, or continue through the curriculum.

Next 5 questions →Back to DEA-C01

Free Basic Practice is a study aid with revealable answers — not a scored exam. Examers.io is independent and not affiliated with or endorsed by AWS. “DEA-C01” is a trademark of its owner, used for identification only.

Task 1.3: Orchestrate Data Pipelines DEA-C01 Practice Questions (Page 3)

Questions 11–15

To make a data pipeline idempotent, what property must the processing logic have?

In AWS Step Functions, which state type is used to introduce a delay before proceeding to the next state?

A data engineering team needs to orchestrate a complex ETL pipeline that includes multiple AWS services, human approval steps, and conditional branching based on data validation results. Which AWS service is most appropriate for this use case?

In an AWS Step Functions state machine, which field is used to define the next state to execute after the current state completes successfully?

Keep studying — Content Domain 1: Data Ingestion and Transformation