PL-300 · Question #424
You have a Power BI report that contains a card. The card displays the value for year-to-date revenue. You need to ensure that screen reader users can read the value when initially interacting with…
The correct answer is D. Populate the alt text by using conditional formatting with a DAX measure. To make a Power BI card's dynamic value accessible to screen readers, populate its alt text using a DAX measure with conditional formatting.
Question
You have a Power BI report that contains a card. The card displays the value for year-to-date revenue. You need to ensure that screen reader users can read the value when initially interacting with the card. The value must stay updated as the dataset is refreshed. What should you do?
Options
- AConvert the card into a text box.
- BAdd the value to the chart title text.
- CPopulate the alt text with a static value.
- DPopulate the alt text by using conditional formatting with a DAX measure.
How the community answered
(39 responses)- A3% (1)
- B10% (4)
- C5% (2)
- D82% (32)
Why each option
To make a Power BI card's dynamic value accessible to screen readers, populate its alt text using a DAX measure with conditional formatting.
Converting the card into a text box would cause it to lose its ability to dynamically display a measure value directly from the data model, making it static.
Adding the value to the chart title text might make it visually accessible, but it does not specifically populate the alt text, which is the primary mechanism for screen readers to convey the visual's content.
Populating the alt text with a static value would prevent it from updating as the dataset refreshes, failing the requirement for the value to stay current.
Populating the alt text with a DAX measure ensures that the descriptive text for the card, which screen readers announce, dynamically updates with the year-to-date revenue as the dataset refreshes, thereby meeting both requirements for accessibility and dynamism.
Concept tested: Power BI dynamic alt text for accessibility
Source: https://learn.microsoft.com/en-us/power-bi/create-reports/service-accessibility-create-reports#add-alt-text-to-visuals
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