DA0-002 Data Acquisition and Preparation Practice Question
During data acquisition, a data engineer uses a tool to extract data from a source system incrementally based on a timestamp column. Which method is being used?
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
✓
Change data capture (CDC)
Change data capture (CDC) captures modifications since the last extraction. Full extraction retrieves all data each time, snapshot extracts a point-in-time copy, and manual is not automated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Change data capture (CDC)
Why this is correct
CDC uses timestamps or logs to extract only changed data.
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Snapshot extraction
Why it's wrong here
Snapshot extracts a full copy at a point in time.
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Full extraction
Why it's wrong here
Full extraction retrieves all data, not just changes.
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Manual extraction
Why it's wrong here
Manual processes are not automated incremental extraction.
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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.