PL-300 Visualize and analyze the data Practice Question
You are designing a Power BI report that will be viewed on mobile devices. The report includes many visuals. What is the best practice for optimizing the report layout for mobile?
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
✓
Create a mobile-optimized layout using the Phone layout view.
Create a mobile-optimized layout using the Phone layout view. Power BI Desktop provides a dedicated Phone layout view where you can rearrange, resize, and hide visuals specifically for portrait mobile screens, ensuring the report is readable and usable on phones without affecting the desktop layout. Options B, C, and D do not address mobile layout optimization: a single table visual is not a layout best practice, bookmarks are for navigation rather than responsive design, and limiting to one visual per page is an arbitrary restriction that does not optimize the mobile experience.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Create a mobile-optimized layout using the Phone layout view.
Why this is correct
The Phone layout view is a dedicated design canvas in Power BI Desktop where you can create a separate, mobile-optimized version of each report page. It lets you reorder, resize, and hide visuals to fit a portrait phone screen, ensuring a touch-friendly and readable experience. This is the official, supported method for tailoring reports to mobile viewing rather than relying on automatic reflow.
- ✗
Use a table visual to display all data.
Why it's wrong here
A table visual displays data in a dense grid with many columns, which forces horizontal scrolling and tiny text on a narrow phone screen. Tables do not adapt responsively to viewport width, and their touch targets are too small for reliable interaction. While a table preserves all data, it sacrifices usability, which defeats the purpose of mobile optimization.
- ✗
Use bookmarks to navigate between different views.
Why it's wrong here
Bookmarks capture the current state of a report page, such as filters and slicers, and allow navigation by applying those saved states via buttons or links. They are a navigation and storytelling feature, not a layout tool, and they do not alter how visuals are rendered or sized on different screen dimensions. Using bookmarks to switch between views would not make the underlying page responsive to the phone form factor.
- ✗
Reduce the number of visuals to one per page.
Why it's wrong here
Reducing the number of visuals to one per page arbitrarily limits the report's analytical capability and may force users to switch pages excessively to see related insights. It is not a layout optimization technique; a mobile layout should prioritize the right content and visual hierarchy, not simply minimize counts. The Phone layout view allows multiple visuals to be arranged effectively, so there is no reason to enforce such a constraint.
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