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%)
   --> Create reports
      --> Apply and customize a theme

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.

---

Practice Questions

Question 1

A report must follow company branding with consistent colors and fonts across all visuals.
Which Power BI feature best supports this requirement?

A. Conditional formatting
B. Report themes
C. Visual interactions
D. Data labels

Correct Answer: B

Explanation:
Report themes define default colors, fonts, and visual styles across the entire report, ensuring consistent branding without formatting each visual individually.

---

Question 2

Where do you apply a built-in theme in Power BI Desktop?

A. Home tab
B. Modeling tab
C. View tab
D. Insert tab

Correct Answer: C

Explanation:
Built-in themes are applied from the View tab in Power BI Desktop using the Themes gallery.

---

Question 3

A stakeholder provides a JSON file that defines corporate colors and fonts.
What should you do to apply it to your report?

A. Paste the JSON into Power Query
B. Import the JSON file as a data source
C. Browse for and apply the theme file
D. Convert the JSON to a dataset

Correct Answer: C

Explanation:
Custom themes are applied by browsing for and importing a .json theme file from the Themes menu.

---

Question 4

What happens when you apply a theme to an existing report?

A. It only affects new visuals
B. It updates the default formatting of visuals in the report
C. It removes all manual formatting
D. It changes the data model

Correct Answer: B

Explanation:
Applying a theme updates the default visual formatting across the report. Manually overridden formatting may remain unchanged.

---

Question 5

Which scenario is the best use case for creating a custom theme?

A. Calculating business metrics
B. Improving model performance
C. Enforcing branding and design standards
D. Enabling row-level security

Correct Answer: C

Explanation:
Custom themes are designed to enforce consistent branding, colors, and styles across reports.

---

Question 6

A report author wants to adjust colors and fonts without writing JSON.
Which option should they use?

A. Customize current theme
B. Power Query Editor
C. Conditional formatting
D. Visual interactions

Correct Answer: A

Explanation:
The Customize current theme dialog allows report authors to modify theme settings through the UI without editing JSON.

---

Question 7

Which element can be controlled by a Power BI theme?

A. Relationships between tables
B. DAX calculations
C. Visual color palettes and fonts
D. Data refresh schedules

Correct Answer: C

Explanation:
Themes control visual appearance such as colors, fonts, backgrounds, and default formatting—not data logic or refresh behavior.

---

Question 8

An organization wants all report creators to use approved themes managed centrally.
Which feature supports this requirement?

A. Report templates
B. Organizational themes
C. Visual-level formatting
D. Dataflows

Correct Answer: B

Explanation:
Organizational themes allow administrators to centrally manage and distribute themes for consistent use across reports.

---

Question 9

After applying a theme, some visuals do not change appearance.
What is the most likely reason?

A. The theme file is corrupted
B. The visuals are unsupported
C. Manual formatting overrides exist
D. The report must be refreshed

Correct Answer: C

Explanation:
Manual formatting applied to visuals can override theme defaults, preventing some theme changes from appearing.

---

Question 10

Which principle should guide decisions when applying or customizing a theme?

A. Use as many colors as possible
B. Match formatting across all reports exactly
C. Improve consistency and readability
D. Avoid using built-in themes

Correct Answer: C

Explanation:
Themes should improve visual consistency, clarity, and usability—not add unnecessary complexity or visual noise.

---

Go back to the PL-300 Exam Prep Hub main page