DA0-002 Data Governance Practice Question
Exhibit
2025-03-15 14:32:01 ERROR [TransformJob] Failed to transform row 4521: Missing value for field 'Region' 2025-03-15 14:32:02 WARN [TransformJob] Defaulting missing 'Region' to 'Unknown'
Refer to the exhibit. What is the best course of action for the data analyst?
⚠ Common exam trap
Watch out — candidates often assume missing data should be immediately cleaned by deletion or default values, but the CompTIA Data+ exam tests the understanding that a data analyst's first responsibility is to investigate the source of the anomaly before applying any transformation.
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
✓
Investigate source data to understand why 'Region' is missing
Missing data in a critical field like 'Region' indicates a potential data quality issue that requires root cause analysis. The data analyst should investigate the source system to determine whether the missing values result from a collection error, a transformation bug, or a legitimate null, rather than making assumptions by deleting rows or filling defaults. This aligns with the principle of data provenance and ensures that downstream insights are based on accurate, traceable data.
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 the default value to 'NA'
Why it's wrong here
Changing default does not address the root cause.
- ✗
Delete rows with missing 'Region'
Why it's wrong here
Deleting rows reduces data integrity and may not be acceptable.
- ✓
Investigate source data to understand why 'Region' is missing
Why this is correct
Root cause analysis helps improve data quality at the source.
- ✗
Ignore the warning as it is handled
Why it's wrong here
The default handling may mask underlying data quality problems.
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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.