PL-900 Demonstrate the capabilities of Power Apps Practice Question
A canvas app uses a gallery to display records from a SharePoint list. The app loads slowly because the gallery is set to load all items. The list contains 10,000 items. What is the most efficient way to improve performance?
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 a search box and use a Delegation-compatible filter
Adding a search box with a Delegation-compatible filter allows Power Apps to push the filtering operation to the data source (SharePoint), retrieving only matching records instead of downloading all 10,000 items locally. This drastically improves performance. Option A is incorrect because the function is named `LoadData`, not `Variables.loadData`, and `LoadData` loads data from a local cache, not from a datasource efficiently. Option C is incorrect because setting the gallery's Items property to 'None' results in an empty gallery, which does not solve the performance problem. Option D is incorrect because `ClearCollect` loads all 10,000 items into a collection on the client side, causing the same slow performance as loading all items directly.
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 the Variables.loadData function
Why it's wrong here
Variables.loadData is not a valid Power Apps function.
- ✓
Add a search box and use a Delegation-compatible filter
Why this is correct
Delegation pushes filtering to the data source, improving performance.
- ✗
Set the gallery's Items property to 'None'
Why it's wrong here
Setting to None hides items, but doesn't reduce data retrieval.
- ✗
Use ClearCollect to load all items into a collection
Why it's wrong here
ClearCollect loads all items, which doesn't solve performance.
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