How hard is the AWS Data Engineer Associate exam? +
The difficulty is in service-choice questions. Kinesis or MSK, Glue or EMR, Athena or Redshift - the exam asks which fits a scenario's cost, latency and operational overhead. Knowing each service in isolation is not enough. Data ingestion and transformation is the largest domain at 34%, and security and governance, including Lake Formation permissions, is 18% and often neglected.
What is the DEA-C01 exam format? +
DEA-C01 has 65 multiple-choice and multiple-response questions in 130 minutes. Only 50 are scored; 15 unscored items are mixed in and not marked, so do not panic over unfamiliar questions. You can take it at a Pearson VUE testing center or online with a proctor.
What is the passing score for DEA-C01? +
You need 720 on a scaled score from 100 to 1000. It is a compensatory model, so you do not need to pass each domain separately - your overall score decides the result. Your score report shows performance by domain, which helps if you need to retake.
How much does DEA-C01 cost and how long is it valid? +
The exam costs $150, and extra costs such as exchange rates or taxes may apply. The certification is valid for three years. You recertify by passing the latest version of the exam before it expires. AWS also lets certified candidates use a discount voucher on a future exam - check your AWS Certification account for current benefits.
What experience does DEA-C01 assume? +
AWS recommends about 2-3 years in data engineering or data architecture and at least 1-2 years of hands-on AWS experience. With that background, 6-8 weeks of study is typical. Without it, spend extra time building a small pipeline with Glue, S3, Athena and Step Functions, and practice Lake Formation permissions.
What is the DEA-C01 retake policy? +
If you fail, you must wait 14 days before retaking. There is no limit on the number of attempts, but you pay the full fee each time. Use the domain breakdown on your score report to target the next attempt. Spend the waiting period on scenario practice rather than rereading service documentation.