CompTIA Data+ exam domains explained

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The CompTIA Data+ (DA0-002) exam is split into 5 domains. Here is what each one covers, how much of the exam the provider says it is worth, and where to practise it.

• Data Concepts and Environments (20% of the exam)
  Where data lives and what it looks like: the types of databases and files, the places data comes from, and the tools analysts use to work with it.
• Data Acquisition and Preparation (22% of the exam)
  Getting data and making it usable. Most analysis time goes here: pulling data together, spotting gaps and oddities, and cleaning it before anything is measured.
• Data Analysis (24% of the exam)
  The largest domain: choosing a suitable statistical method, applying it correctly, explaining the answer to the people who need it, and fixing problems when numbers do not add up.
• Visualization and Reporting (20% of the exam)
  Turning results into something a reader can understand at a glance: picking the right chart, building a dashboard, and checking the figures are right before they are shared.
• Data Governance (14% of the exam)
  The rules around data: who owns it, who may see it, how long it is kept, and how its quality is checked.

Domain names, weights and topic lists come from the CompTIA Data+ certification page (DA0-002), checked 2 November 2026. Providers change their outlines, so confirm the current version before you book. The plain-English explanations are ours, not the provider’s. Not affiliated with, endorsed by or sponsored by any certification vendor or exam body. Certification names, exam codes and product names are trademarks of their respective owners and are used only to identify the exam a practice product prepares for. Our questions are original and are not actual exam questions.