Question 355 of 986
DA0-002 Data Acquisition and Preparation Practice Question
A data analyst is evaluating data quality issues during acquisition. Which TWO issues are most likely to arise from merging data from different sources? (Select exactly 2)
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
✓
Duplicate records
Options B and E are correct because merging data from different sources often leads to duplicate records (the same entity represented differently across sources) and formatting inconsistencies (such as different date formats, units of measurement, or naming conventions). Option A is wrong: user access permissions are a security concern, not a direct data quality issue arising from merging. Option C is wrong: slow network speed is a performance or infrastructure issue, not a data quality issue. Option D is wrong: high storage cost is a cost consideration, not a data quality issue.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
User access permissions
Why it's wrong here
Authorization issue.
- ✓
Duplicate records
Why this is correct
Common when merging overlapping data.
- ✗
Slow network speed
Why it's wrong here
Performance issue, not data quality.
- ✗
High storage cost
Why it's wrong here
Not a direct data quality issue.
- ✓
Formatting inconsistencies
Why this is correct
Different sources have varying formats.
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Last reviewed: Jun 24, 2026
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