DEA-C01 Data Ingestion and Transformation Practice Question
Network Topology
The exhibit shows an AWS CLI command and its output. A data engineer wants to copy only objects larger than 10 MB from the S3 bucket to another bucket for processing. Which approach should be used to automate this task?
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
✓
Use AWS CLI with a script to filter and copy objects
The command lists objects larger than 10 MB. To automate copying, a script using AWS CLI with the --query parameter can filter and copy. Using S3 Batch Operations allows performing actions on a list of objects. The correct approach is to use AWS CLI with a script that iterates over the filtered list and uses aws s3 cp. S3 replication is for continuous sync, not one-time copy. Lambda with S3 events triggers only on new objects, not existing ones. S3 Inventory provides metadata but not direct copy.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use S3 replication rules to replicate objects above 10 MB
Why it's wrong here
S3 replication does not filter by size; it replicates all objects.
- ✓
Use AWS CLI with a script to filter and copy objects
Why this is correct
The CLI can filter by size and copy objects using a script.
- ✗
Use S3 Inventory to generate a list and then copy
Why it's wrong here
Inventory provides a CSV list but does not automate copying.
- ✗
Use AWS Lambda with S3 event notifications
Why it's wrong here
Event notifications trigger on new objects, not existing ones.
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 |
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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.