DA0-002 Data Acquisition and Preparation Practice Question
An e-commerce company is acquiring product data from multiple supplier APIs. The APIs return JSON with inconsistent field naming conventions. Which data acquisition technique should be applied?
⚠ Common exam trap
Many candidates confuse data transformation with data aggregation or deduplication, assuming any processing step can fix schema inconsistencies, but only mapping and transformation directly address field naming and structure mismatches.
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
✓
Data mapping and transformation
Data mapping and transformation is the correct technique because the JSON responses from different supplier APIs use inconsistent field naming conventions (e.g., 'product_id' vs. 'ProductID'). This technique defines a schema to map source fields to a standardized target format, ensuring data consistency before loading into the company's system. Without transformation, downstream processes like analytics or inventory management would fail due to mismatched field names.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Data compression
Why it's wrong here
Reduces size, not addresses naming.
- ✓
Data mapping and transformation
Why this is correct
Standardizes field names and structures.
- ✗
Data deduplication
Why it's wrong here
Removes duplicates, not handles naming inconsistencies.
- ✗
Data aggregation
Why it's wrong here
Combines data but doesn't fix naming.
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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.