DA0-002 Data Concepts and Environments Practice Question
A data scientist is building a model to predict customer churn. The company's internal CRM system provides customer demographics and transaction history. They also purchase demographic data from a third-party vendor. How should the purchased data be classified?
⚠ Common exam trap
Watch out — candidates often confuse 'secondary data' with 'structured data' because purchased data is often delivered in a structured format like CSV, but the classification is based on data origin and collection purpose, not its structure.
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
✓
Secondary data
Purchased demographic data from a third-party vendor is classified as secondary data because it was originally collected by another entity for a different purpose and is being reused by the data scientist for churn prediction. Secondary data contrasts with primary data, which is collected firsthand for the specific analysis at hand. This classification is independent of whether the data is structured or unstructured.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Secondary data
Why this is correct
Correct. Secondary data is collected by another entity and reused.
- ✗
Internal data
Why it's wrong here
Incorrect. The purchased data comes from an external vendor, not internal systems.
- ✗
Structured data
Why it's wrong here
Incorrect. Structured data is a format classification, not a source classification.
- ✗
Primary data
Why it's wrong here
Incorrect. Primary data is collected firsthand by the company for the specific purpose.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DA0-002 practice question is part of Courseiva's free CompTIA 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 DA0-002 exam.