← DEA-C01·Amazon Web Services

Question 1,246 of 1,786

Data Ingestion and Transformation →easyMultiple ChoiceObjective-mapped

Quick Answer

The correct action is to increase the Lambda function timeout. When an S3-triggered Lambda function fails with a timeout error, it means the function’s configured execution duration is too short to complete its work—in this case, processing a JSON file and writing results to DynamoDB. Lambda functions have a default timeout of 3 seconds, and if the data payload or processing logic exceeds that limit, the invocation is terminated, causing the timeout. On the AWS Certified Data Engineer Associate DEA-C01 exam, this scenario tests your understanding of Lambda execution configuration versus permissions or event sources; a common trap is to assume the S3 event notification is malformed or that DynamoDB access is denied, but the error message explicitly points to a timeout. Remember that increasing the timeout is the simplest fix, but also consider optimizing the function’s logic or increasing memory (which proportionally boosts CPU) for heavy workloads. Memory tip: “Time’s up? Turn it up.”

DEA-C01 Data Ingestion and Transformation Practice Question

This DEA-C01 practice question tests your understanding of data ingestion and transformation. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

Exhibit

Refer to the exhibit.

```
{
  "Records": [
    {
      "eventVersion": "2.0",
      "eventSource": "aws:s3",
      "awsRegion": "us-east-1",
      "eventName": "ObjectCreated:Put",
      "s3": {
        "s3SchemaVersion": "1.0",
        "bucket": {
          "name": "my-bucket",
          "arn": "arn:aws:s3:::my-bucket"
        },
        "object": {
          "key": "data/2024/01/01/file.json",
          "size": 1024,
          "eTag": "abc123"
        }
      }
    }
  ]
}
```

Refer to the exhibit. An S3 event notification is configured to trigger an AWS Lambda function when objects are created in 'my-bucket'. The Lambda function processes the JSON file and writes results to Amazon DynamoDB. The function fails with a timeout error. Which action should the engineer take to resolve the issue?

Question 1easymultiple choice

Full question →

Exhibit

Refer to the exhibit.

```
{
  "Records": [
    {
      "eventVersion": "2.0",
      "eventSource": "aws:s3",
      "awsRegion": "us-east-1",
      "eventName": "ObjectCreated:Put",
      "s3": {
        "s3SchemaVersion": "1.0",
        "bucket": {
          "name": "my-bucket",
          "arn": "arn:aws:s3:::my-bucket"
        },
        "object": {
          "key": "data/2024/01/01/file.json",
          "size": 1024,
          "eTag": "abc123"
        }
      }
    }
  ]
}
```

A
Modify the S3 event notification to use a different event type
Why wrong: The event type is correct for object creation.
B
Grant the Lambda function permission to access DynamoDB
Why wrong: Timeout suggests insufficient time, not permissions.
C
Change the trigger to Amazon SQS instead of S3
Why wrong: The trigger is not the issue.
D
Increase the Lambda function timeout
Timeout error indicates the function needs more time.

Full breakdown with real-world context →

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

Increase the Lambda function timeout

Option C is correct. If the function times out, increasing the timeout gives it more time to complete. Option A is wrong because the event is correct. Option B is wrong because the function can access DynamoDB with the right permissions. Option D is wrong because the event is from S3.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
Modify the S3 event notification to use a different event type
Why it's wrong here
The event type is correct for object creation.
✗
Grant the Lambda function permission to access DynamoDB
Why it's wrong here
Timeout suggests insufficient time, not permissions.
✗
Change the trigger to Amazon SQS instead of S3
Why it's wrong here
The trigger is not the issue.
✓
Increase the Lambda function timeout
Why this is correct
Timeout error indicates the function needs more time.
Related concept
Read the scenario before looking for a memorised answer.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.

Detailed technical explanation

How to think about this question

This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.

KKey Concepts to Remember

Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.

TExam Day Tips

Underline the problem statement mentally.
Watch for words such as best, first, most likely and least administrative effort.
Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Real-world example

How this comes up in practice

A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.

What to study next

Got this wrong? Here's your next step.

Identify which DEA-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

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FAQ

Questions learners often ask

What does this DEA-C01 question test?

Data Ingestion and Transformation — This question tests Data Ingestion and Transformation — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Increase the Lambda function timeout — Option C is correct. If the function times out, increasing the timeout gives it more time to complete. Option A is wrong because the event is correct. Option B is wrong because the function can access DynamoDB with the right permissions. Option D is wrong because the event is from S3.

What should I do if I get this DEA-C01 question wrong?

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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Last reviewed: Jun 20, 2026

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This DEA-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DEA-C01 exam.