DA0-002 Visualization and Reporting Practice Question
A data analyst is creating a report on customer satisfaction scores. The analyst wants to ensure that regional managers can only see data for their own region. Which security measure should be applied?
⚠ Common exam trap
Candidates often confuse data protection techniques (encryption, masking) with access-control techniques (row-level security) — candidates often pick encryption because it sounds like the strongest security measure, but it does not restrict which rows a user can see.
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
✓
Row-level security
Row-level security (RLS) filters query results at the row level based on the identity of the user running the report, so each regional manager automatically sees only the rows belonging to their region. This is the standard mechanism in BI platforms (e.g., Power BI, Tableau, Salesforce) for enforcing per-user data segmentation without duplicating reports. Encryption, masking, and single-version-of-truth do not restrict which rows a user can retrieve.
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 encryption
Why it's wrong here
Encryption protects data at rest and in transit but does not filter rows by region, so every manager would still see all regions once decrypted. It is the correct control when the requirement is confidentiality against interception or unauthorised storage access, not per-user row visibility.
- ✓
Row-level security
Why this is correct
Row-level security filters table rows by the user's identity, so each regional manager's query returns only their own region's satisfaction scores. This directly satisfies the stem's constraint that managers see solely their region's data, enforced at query time within the semantic model rather than through separate reports or workspace permissions.
- ✗
Single version of truth
Why it's wrong here
A single version of truth is a data-governance principle ensuring consistent definitions and values, not an access control; it cannot restrict which rows a manager retrieves. It is the right aim when reconciling conflicting reports, but it grants no row-level filtering by region.
- ✗
Data masking
Why it's wrong here
Masking obscures or replaces sensitive values such as names or card numbers, yet the underlying rows for every region remain present and visible. It suits protecting PII within a dataset, whereas restricting managers to their own region requires row-level filtering by their identity.
Go deeper
Related to this question
About these practice questions
This DA0-002 question is part of Courseiva's 1,004-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official CompTIA exam blueprint
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.