Which of the following makes data unreadable without a required key?
Anonymization
Role-based access control
Encryption
Masking
Show answer and explanation
Correct answer: C. Encryption
Encryption is the process of converting readable data into an unreadable format using a cryptographic key, making it inaccessible without the correct decryption key. Anonymization removes identifying information but doesn't make data unreadable. Role-based access control restricts who can access data but doesn't render it unreadable. Masking obscures data for display purposes but doesn't fundamentally make it unreadable to those with access.
Why the other options are wrong
A. Anonymization removes identifiers but leaves data in a readable format.
B. RBAC controls access permissions but doesn't make data unreadable.
D. Masking hides data visually but doesn't prevent reading by authorized users.
Question 2
An analyst is building a reporting deck. The deck must include tracking and visualizing metrics and row-level security. Which of the following actions should the analyst take after meeting the initial requirements?
Show a mock-up to the team.
Explain the desired level of reporting detail.
Present an analysis of the data.
Find out the project due date.
Show answer and explanation
Correct answer: A. Show a mock-up to the team.
After identifying initial requirements like tracking metrics and row-level security, the next logical step is to validate assumptions and gather feedback by showing a mock-up to the team. This allows stakeholders to visualize the solution, provide feedback, and ensure the analyst's understanding of requirements is correct before investing significant effort in full development.
Why the other options are wrong
B. Explaining reporting detail should happen during initial requirements gathering, not after.
C. Presenting analysis is a later deliverable, not a follow-up to initial requirements.
D. Finding the due date should be established before or during initial requirements, not after.
Question 3
Which of the following pieces of information, if made public, results in a data privacy violation?
Gender
Driver’s license
Age
Employment status
Show answer and explanation
Correct answer: B. Driver’s license
A driver's license number is personally identifiable information (PII) that directly identifies an individual and is regulated under privacy laws. Public disclosure would constitute a clear data privacy violation. Gender, age, and employment status, while sensitive, are demographic attributes that alone do not uniquely identify individuals and may be disclosed in aggregate or anonymized form without necessarily violating privacy regulations.
Why the other options are wrong
A. Gender alone is not sufficient to identify an individual and may be disclosed in aggregate.
C. Age alone is demographic information that doesn't uniquely identify someone.
D. Employment status is general information that may be publicly disclosed without privacy violation.
1 review for CompTIA Data+ DA0-002 Exam Practice Questions
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Results came in, I passed! Will keep using this for future certs.
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ABOUT THIS PACK
What’s in the CompTIA Data+ DA0-002 pack
148 questions mapped to the DA0-002 exam objectives
Answers and explanations for every question, including the wrong options
A questions-only PDF for timed practice runs
Instant delivery by email the moment you check out
Free monthly updates for as long as the exam is live
Pass or your money back
A failed DA0-002 attempt costs another US$264 voucher, plus weeks of restudying. This pack is US$39, paid once, and refunded if you fail.
What makes the Data+ hard
CompTIA's data analytics certification was updated and relaunched as V2 on 14 October 2025. It is vendor-neutral: it does not care whether you use Power BI, Tableau, SQL or Python. It tests the full data lifecycle, where data comes from, how to clean and prepare it, how to analyse it statistically, how to visualise it clearly, and how to govern it properly, and that breadth is what catches candidates off guard.
Up to 90 questions in 90 minutes, 675 out of 900 to pass. The mix of multiple-choice and performance-based questions means you need to apply concepts, not just recall them, and because the exam is newly released as V2, question exposure matters more than usual. This pack has 148 practice questions for the DA0-002: data quality scenarios, ETL decisions, statistical method selection and governance concepts, so none of it is new on exam day.
About the exam
CompTIA Data+ (DA0-002) is CompTIA's vendor-neutral certification for data analytics professionals. V2 launched 14 October 2025, replacing DA0-001. It validates the ability to mine, analyse, interpret and report on data to support business decision-making. No formal prerequisites are required, though familiarity with SQL and basic statistics is recommended. Valid for three years, renewable via continuing education or retake.
Straight away. The full PDF and a questions-only copy are emailed to you the moment your payment goes through, and the same links are on your order page.
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Yes. The pack is updated every month for as long as the exam is live, and updates are free for everyone who has bought it.
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We refund the pack, or swap it for any other pack if you would rather keep studying. Sit the exam 7 to 30 days after buying, then send your official score report within 7 days of the exam date, as set out in the refund policy.
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99% of customers who prepare with a CertStash pack pass. If you do not, we refund the pack, or swap it for another pack.
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JARED KOWALSKI –
Results came in, I passed! Will keep using this for future certs.