PL-300 Visualize and analyze the data Practice Question
You are a Power BI author for a marketing agency. You have a report with a pie chart showing the percentage of total leads by source. The report is shared with clients who view it on mobile devices. The pie chart's legend is taking up too much space and making the chart small. What should you do to improve the mobile experience?
⚠ Common exam trap
The trap here is assuming that changes to the desktop layout automatically apply to mobile, but mobile has a separate layout that must be configured.
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
✓
In the mobile layout view, hide the legend and add a custom visual or use data labels to show percentages.
The mobile layout view in Power BI allows you to design a dedicated phone layout. Hiding the legend and using data labels to show percentages reduces clutter and maximizes the chart area. This is the most effective way to improve the pie chart's readability on mobile 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.
- ✗
Change the legend position to 'Top' in the visual formatting.
Why it's wrong here
Moving the legend to the top might reduce horizontal space but still consumes vertical space. On a small mobile screen, this could still crowd the chart. It does not fully resolve the space issue as effectively as hiding the legend in mobile layout.
- ✓
In the mobile layout view, hide the legend and add a custom visual or use data labels to show percentages.
Why this is correct
The mobile layout view allows you to customize the report for phone form factors. By hiding the legend and using data labels to display percentages, you free up space for the pie chart to be larger and more readable. This directly improves the mobile experience.
- ✗
Convert the pie chart to a donut chart.
Why it's wrong here
Converting to a donut chart changes the visual style but does not address the legend size issue. The legend would still occupy similar space. The mobile experience might not improve significantly because the chart area remains constrained by the legend.
- ✗
Increase the size of the pie chart on the desktop layout, which will also affect mobile.
Why it's wrong here
The desktop layout does not automatically scale to mobile; mobile has its own layout. Changing desktop size may not improve mobile because the mobile layout is separate. The legend issue would persist unless addressed in mobile view.
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 Microsoft exam blueprint
This PL-300 practice question is part of Courseiva's free Microsoft 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 PL-300 exam.