This post is a part of the PL-300: Microsoft Power BI Data Analyst Exam Prep Hub; and this topic falls under these sections:
Visualize and analyze the data (25–30%)
   --> Enhance reports for usability and storytelling
      --> Create custom tooltips

Below are 10 practice questions (with answers and explanations) for this topic of the exam.
There are also 2 practice tests for the PL-300 exam with 60 questions each (with answers) available on the hub.

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Practice Questions

Question 1

What is the primary purpose of a custom tooltip in Power BI?

A. To improve dataset refresh performance
B. To provide additional contextual insights on hover
C. To navigate to another report page
D. To apply row-level security

Correct Answer: B. To provide additional contextual insights on hover

Explanation:
Custom tooltips enhance reports by delivering rich, on-demand information when users hover over a visual element.

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Question 2

How are custom tooltips created in Power BI?

A. By adding fields to the Tooltip well
B. By creating a calculated table
C. By creating a report page and enabling it as a tooltip
D. By configuring drillthrough filters

Correct Answer: C. By creating a report page and enabling it as a tooltip

Explanation:
Custom tooltips are implemented using dedicated report pages that are configured for tooltip use.

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Question 3

Which advantage do custom tooltips have over default tooltips?

A. They support data entry
B. They allow cross-filtering
C. They can include multiple visuals
D. They refresh data in real time

Correct Answer: C. They can include multiple visuals

Explanation:
Unlike default tooltips, custom tooltips can display charts, KPIs, and formatted visuals.

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Question 4

A report designer wants to reduce visual clutter while still providing detailed insights. What feature should they use?

A. Drillthrough pages
B. Custom tooltips
C. Bookmarks
D. Visual-level filters

Correct Answer: B. Custom tooltips

Explanation:
Custom tooltips show details only when needed, keeping the main report clean.

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Question 5

How does filter context affect a custom tooltip?

A. Tooltips ignore all filters
B. Tooltips use only report-level filters
C. Tooltips inherit the visual’s filter context
D. Tooltips require manual filtering

Correct Answer: C. Tooltips inherit the visual’s filter context

Explanation:
Custom tooltips dynamically reflect the same context as the data point being hovered over.

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Question 6

Which scenario is best suited for a custom tooltip rather than drillthrough?

A. Navigating to a detailed transaction report
B. Viewing additional KPIs when hovering over a chart
C. Analyzing data at a lower grain
D. Filtering another page

Correct Answer: B. Viewing additional KPIs when hovering over a chart

Explanation:
Custom tooltips are ideal for lightweight, hover-based insights, not deep exploration.

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Question 7

What happens if a visual does not support report page tooltips?

A. The tooltip page still appears
B. Power BI shows an error
C. The default tooltip is used instead
D. The report fails to load

Correct Answer: C. The default tooltip is used instead

Explanation:
If a visual doesn’t support custom tooltips, Power BI falls back to the default tooltip behavior.

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Question 8

Which best practice improves readability in custom tooltips?

A. Adding as many visuals as possible
B. Using small fonts to fit more data
C. Keeping the tooltip focused and concise
D. Disabling filter context

Correct Answer: C. Keeping the tooltip focused and concise

Explanation:
Tooltips are small by nature, so clarity and simplicity are critical.

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Question 9

Which feature should you use if users need to click and explore data in depth rather than hover?

A. Custom tooltip
B. Bookmark
C. Drillthrough
D. Button

Correct Answer: C. Drillthrough

Explanation:
Drillthrough supports click-based navigation for deeper analysis, unlike hover-only tooltips.

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Question 10

An exam question mentions “rich, context-aware insights displayed on hover without navigating away.” What feature is being described?

A. Drillthrough
B. Custom tooltip
C. Bookmark
D. Sync slicer

Correct Answer: B. Custom tooltip

Explanation:
This phrasing directly describes custom tooltips, a common exam cue.

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Exam-Day Reminder

If the PL-300 question emphasizes:

• Hover-based interaction
• Context-aware insights
• Reducing report clutter
• Enhanced storytelling

👉 The correct answer is almost always Custom Tooltips.

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