DEA-C01 Data Ingestion and Transformation Practice Question
Network Topology
Refer to the exhibit. A data engineer runs this AWS CLI command to create a Glue job. The job processes JSON files in an S3 bucket and writes Parquet files to another bucket. After the first successful run, the job re-processes all input files instead of only new files. What is the most likely cause?
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
✓
The job script does not implement job bookmark support.
The command sets '--job-bookmark-enable' but if the job script does not use the bookmark APIs or implement bookmark support, Glue will not track processed files and will reprocess all input on each run. Option A is incorrect because the ScriptLocation is valid and does not affect bookmark behavior. Option B is incorrect because max-retries does not control reprocessing. Option D is incorrect because the IAM role is specified and permissions for bookmark state are not explicitly shown, but the lack of bookmark support in the script is the issue.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The ScriptLocation points to an incorrect S3 path.
Why it's wrong here
If path were wrong, job would fail.
- ✗
The --max-retries parameter is set to 0.
Why it's wrong here
Retries do not affect bookmark behavior.
- ✓
The job script does not implement job bookmark support.
Why this is correct
Bookmarks require explicit implementation in the script.
- ✗
The IAM role lacks permissions to read bookmark state.
Why it's wrong here
Bookmark state is stored by Glue; permissions unlikely cause.
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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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.