DA0-002 Visualization and Reporting Practice Question
A data analyst is building a report that will be distributed as a PDF to stakeholders. The report includes a bar chart showing sales by region. The analyst wants to ensure that the chart is accessible to color-blind readers. Which action should the analyst take?
⚠ Common exam trap
The trap here is assuming that any color scheme works as long as it looks distinct to the designer, but color blindness affects perception, so relying solely on color without labels or patterns is risky.
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
✓
Add data labels to each bar and use a color palette that is distinguishable for common types of color blindness
To make a bar chart accessible for color-blind readers, the analyst should add data labels and use a colorblind-friendly palette. Data labels provide direct value readouts, while a carefully chosen palette ensures that colors are distinguishable for common types of color vision deficiency. This combination guarantees that the chart is interpretable by all stakeholders.
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 a red-green color scheme to highlight high and low performers
Why it's wrong here
Red-green color schemes are particularly problematic for the most common form of color blindness, deuteranopia. Using red and green together can make it impossible for some readers to differentiate the bars, leading to misinterpretation. This choice actively harms accessibility.
- ✗
Convert the bar chart to a pie chart with a legend
Why it's wrong here
Changing to a pie chart does not address color blindness; it simply changes the chart type. Pie charts also rely on color differentiation and can be harder to read for comparing values. The core issue of color accessibility remains unresolved without adjustments like labels or patterns.
- ✗
Use a monochromatic color scheme with varying shades of blue
Why it's wrong here
A monochromatic scheme with shades of blue relies solely on color intensity to differentiate bars. Color-blind readers, especially those with blue-yellow deficiencies, may struggle to distinguish shades. It is better to use patterns or labels in addition to color to ensure accessibility for all readers.
- ✓
Add data labels to each bar and use a color palette that is distinguishable for common types of color blindness
Why this is correct
Adding data labels ensures that the values are directly readable regardless of color perception. Pairing this with a colorblind-friendly palette, such as the Okabe-Ito palette, which avoids problematic color combinations, makes the chart accessible to readers with various color vision deficiencies.
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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.