DA0-002 Data Analysis Practice Question
A data analyst is cleaning a dataset and finds that some records have duplicate entries based on customer ID. Which data quality dimension is most directly affected by these duplicates?
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
✓
Uniqueness
Duplicates violate the uniqueness dimension, which requires each entity to be represented only once.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Timeliness
Why it's wrong here
Timeliness refers to data being up-to-date.
- ✗
Consistency
Why it's wrong here
Consistency refers to logical coherence across data.
- ✗
Accuracy
Why it's wrong here
Accuracy refers to correctness of values.
- ✓
Uniqueness
Why this is correct
Duplicates directly impact uniqueness.
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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.