DA0-002 Visualization and Reporting Practice Question
A data analyst is building a report that will be distributed as a PDF to stakeholders who will view it on various devices, including smartphones. The report includes several charts with small text labels and thin lines. Which action should the analyst take to ensure the charts remain legible on smaller screens?
⚠ Common exam trap
The trap here is assuming that high-resolution images or 3D effects will solve legibility issues, but these either require user action or degrade readability.
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
✓
Increase the font size of all text labels and use thicker lines.
For PDFs viewed on smartphones, small text and thin lines can become illegible. Increasing font size and line thickness ensures that charts are readable without zooming. This proactive design choice accommodates smaller screens and diverse viewing conditions, maintaining the report's effectiveness across devices.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Increase the font size of all text labels and use thicker lines.
Why this is correct
Increasing font size and line thickness improves legibility on small screens by making text and graphical elements easier to see without zooming. Small text and thin lines can become illegible when scaled down on a smartphone. This adjustment ensures that the charts remain readable across devices, which is essential for effective communication.
- ✗
Embed the charts as high-resolution images and rely on zooming.
Why it's wrong here
High-resolution images may allow zooming, but requiring users to zoom in to read labels is poor user experience. Stakeholders viewing on smartphones may not zoom, leading to missed information. The goal is to make the report legible without zooming. Relying on zooming assumes users will take extra steps, which is not ideal for quick review.
- ✗
Use a 3D effect on the charts to make them stand out.
Why it's wrong here
3D effects can distort data and add visual clutter, making charts harder to interpret, especially on small screens where space is limited. They do not improve legibility of text labels or lines. In fact, 3D can make small text even harder to read due to perspective and shading. This is not a recommended practice for data visualization.
- ✗
Convert all charts to tables with detailed numbers.
Why it's wrong here
Converting charts to tables may provide precise numbers, but tables are often harder to read on small screens due to horizontal scrolling and dense text. Charts are better for quickly conveying trends and comparisons. This change would sacrifice the visual advantages of charts and likely reduce engagement and comprehension on mobile devices.
About these practice questions
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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.