About This Domain
Domain 3 — Data Operations and Support — accounts for 22% of the DEA-C01 certification exam. This domain evaluates your understanding of pipeline orchestration with step functions, mwaa (airflow), and glue workflows, monitoring with cloudwatch metrics, alarms, logs, and glue job run insights, data quality with glue data quality, validation rules, and testing strategies, and related concepts. Domain 3 focuses on automating data pipelines, monitoring and troubleshooting, managing data quality, and supporting data consumers. To pass this section you need practical knowledge of how these services and patterns work together in real-world architectures.
What You'll Be Tested On
- Pipeline orchestration with Step Functions, MWAA (Airflow), and Glue workflows
- Monitoring with CloudWatch metrics, alarms, logs, and Glue job run insights
- Data quality with Glue Data Quality, validation rules, and testing strategies
- Query optimization with Athena workgroups, Redshift WLM, and indexing
- Data visualization and BI with Amazon QuickSight
- Troubleshooting failed Glue jobs, Kinesis throughput, and EMR cluster issues
Key AWS Services in This Domain
Study Strategy for Domain 3
While 22% might seem like a smaller portion of the exam, every point counts toward the passing score. Focus on understanding core concepts and common exam scenarios for this domain. Don't neglect it — even a few missed questions here can make the difference between pass and fail.
Exam Tips for Domain 3
Step Functions is preferred for simple linear or branching workflows; MWAA (Airflow) is better for complex DAG-based scheduling with dependencies.
CloudWatch Logs and Glue job run metrics are key to diagnosing ETL failures.
Redshift WLM queues let you prioritize critical queries over ad hoc workloads.
Partition pruning, columnar formats, and compression are the top Athena cost optimizations.
Frequently Asked Questions
How many questions on the DEA-C01 exam come from Domain 3?
Domain 3 (Data Operations and Support) makes up 22% of the DEA-C01 exam. The exam has 65 scored questions, so approximately 14 questions will come from this domain.
What services should I focus on for Domain 3?
The key services for this domain include Step Functions, MWAA, CloudWatch, AWS Glue, Athena, Redshift, QuickSight, EMR, Kinesis. Make sure you understand how each service works, its use cases, and how they integrate with one another.
How should I prepare for Data Operations and Support questions?
Start by reviewing the key topics listed above, then practice with domain-specific questions. Focus on understanding real-world scenarios rather than memorizing facts. Use our practice quizzes to test your knowledge and review explanations for any questions you get wrong.
What's the best order to study the DEA-C01 domains?
Many candidates start with the highest-weighted domains first. For the DEA-C01 exam, the domains in order of weight are: Data Ingestion and Transformation (34%), Data Store Management (26%), Data Operations and Support (22%), Data Security and Governance (18%). However, start with whichever domain aligns best with your existing experience.
Practice Domain 3 Questions
Test your knowledge of Data Operations and Support with practice questions from our DEA-C01 question bank.
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