DEA-C01AWS Certified Data Engineer – Associate
What the exam covers
Study guide
From AWS
About DEA-C01
Pipelines end to end: streaming and batch ingestion, Glue ETL, orchestration, data lakes on S3, Redshift and purpose-built stores, then running it all securely. The questions are about choosing the right tool for the volume, latency and cost the scenario describes.
Who it's for. Data engineers and analytics engineers who build pipelines on AWS.
How to prepare
- Know Kinesis Data Streams vs Firehose vs MSK by latency, ordering and how much you manage.
- Glue details come up often: crawlers, job bookmarks, DynamicFrames, and when Glue DataBrew or EMR is the better fit.
- For governance, learn Lake Formation permissions and how they combine with IAM and S3 bucket policies.
Sample DEA-C01 questions
Try these with the answers on the page, then practise the full bank.
- An e-commerce platform writes daily order events as JSON files to S3. Analysts want the data converted to Parquet and organized into folders by date to reduce scan costs in Athena. Which approach is most suitable? Data ingestion and transformation
- A data pipeline must wait for a new file to land in S3, start a Glue job, retry that job on failure, and send a notification when it completes. Which service coordinates these steps most suitably? Data ingestion and transformation
- A team runs Apache Airflow on Amazon MWAA and wants DAG tasks to create and monitor S3 objects and start Glue jobs using AWS-aware operators. What should the team do? Data ingestion and transformation
- Before loading incoming records into the warehouse, a team needs managed rule checks for completeness, uniqueness and value ranges on tables registered in the Data Catalog. Which AWS service provides these checks? Data ingestion and transformation
- A social platform needs to store and traverse a network of users, follows, and shared interests, with hundreds of billions of edges that must be queried by multi-hop relationship patterns. Which managed service fits best? Data store management
- A product team runs MySQL on Amazon RDS and wants to restore the database to how it looked 3 hours ago after a faulty migration. The backup feature must be native to RDS and need no extra setup. Which option meets this? Data operations and support
- A platform team runs one Kinesis data stream with 12 shards that feeds a fraud model, a live dashboard, and an archive job. Each reader must get dedicated read bandwidth so that none of them slows the others. Under default quotas, how many registered consumers can use enhanced fan-out on this single stream? Data ingestion and transformation
- A data engineer's AWS Glue job runs in us-east-1 and must transform Parquet files stored in an S3 bucket located in eu-west-1. Which statement describes the correct approach? Data ingestion and transformation
- All 32 sample questions
Questions people ask
Is this DEA-C01 practice exam free?
Yes. All 253 questions, the timed mock exam and the explanations are free, and there's no account to create.
Are these real exam questions?
No. Real exam questions are confidential under the AWS candidate agreement. These are practice questions written to cover the same domains in the same scenario style, each with an explanation of why the answer is right.
How is the DEA-C01 mock exam scored?
Questions are drawn from every domain in proportion to the exam guide, and you get a raw percentage with a breakdown by domain. AWS uses scaled scoring, so treat 75% or more here as a sign you're ready rather than a predicted score.
Where is my progress saved?
In your browser, on this device. Nothing is sent to us apart from the answers you check, and clearing site data resets it.