- A
Use aggregated data instead of individual records.
Aggregation prevents identifying individuals.
- B
Include customer names for context.
Why wrong: This violates privacy by exposing PII.
- C
Anonymize or remove personally identifiable information (PII).
Anonymization protects individual privacy.
- D
Share the raw data with all stakeholders.
Why wrong: Sharing raw PII is a privacy violation.
- E
Encrypt the report but keep names visible.
Why wrong: Encryption protects data in transit but does not anonymize content.
Question 487 of 1,000
DA0-001 Reporting Insights Practice Question
This DA0-001 practice question tests your understanding of reporting insights. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A data analyst is creating a report that includes customer names and addresses. To comply with privacy regulations, which TWO actions should the analyst take?
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
✓
Use aggregated data instead of individual records.
Anonymizing PII (e.g., removing or masking names/addresses) and aggregating data prevent individual identification, which is required for GDPR compliance.
Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Use aggregated data instead of individual records.
Why this is correct
Aggregation prevents identifying individuals.
Related concept
CIDR notation defines the prefix length.
- ✗
Include customer names for context.
Why it's wrong here
This violates privacy by exposing PII.
- ✓
Anonymize or remove personally identifiable information (PII).
Why this is correct
Anonymization protects individual privacy.
Related concept
CIDR notation defines the prefix length.
- ✗
Share the raw data with all stakeholders.
Why it's wrong here
Sharing raw PII is a privacy violation.
- ✗
Encrypt the report but keep names visible.
Why it's wrong here
Encryption protects data in transit but does not anonymize content.
Common exam traps
Common exam trap: usable hosts are not the same as total addresses
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Detailed technical explanation
How to think about this question
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
KKey Concepts to Remember
- CIDR notation defines the prefix length.
- Block size helps identify subnet boundaries.
- Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
- The required host count determines the smallest suitable subnet.
TExam Day Tips
- Write the block size before choosing the subnet.
- Check whether the question asks for hosts, subnets or a specific address range.
- Do not confuse /24, /25, /26 and /27 host counts.
Key takeaway
Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Real-world example
How this comes up in practice
A network engineer segments a warehouse floor into three subnets: 20 scanners, 5 printers, and 2 management hosts. Picking the wrong mask wastes addresses or leaves too few usable hosts. Exam questions test whether you can apply CIDR notation, calculate block size, and identify the correct usable-host range for a given prefix.
What to study next
Got this wrong? Here's your next step.
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related DA0-001 subnetting questions on CIDR, address ranges, and subnet selection.
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Reporting Insights — study guide chapter
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FAQ
Questions learners often ask
What does this DA0-001 question test?
Reporting Insights — This question tests Reporting Insights — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: Use aggregated data instead of individual records. — Anonymizing PII (e.g., removing or masking names/addresses) and aggregating data prevent individual identification, which is required for GDPR compliance.
What should I do if I get this DA0-001 question wrong?
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related DA0-001 subnetting questions on CIDR, address ranges, and subnet selection.
What is the key concept behind this question?
CIDR notation defines the prefix length.
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Last reviewed: Jul 4, 2026
This DA0-001 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 DA0-001 exam.
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