DEA-C01 Data Ingestion and Transformation Practice 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"
}
}
}
]
}
```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?
⚠ Common exam trap
The DEA-C01 exam often tests the distinction between timeout errors and permission errors, leading candidates to incorrectly choose a permissions fix (Option B) when the error message explicitly states 'timeout'.
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
The Lambda function is failing with a timeout error, which indicates that the function is taking longer to execute than the default timeout of 3 seconds. Increasing the Lambda function timeout allows the function to run longer and complete its processing of the JSON file and DynamoDB write operation without being prematurely terminated.
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.
Visual reference
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
Go deeper
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.