MB-230 Extend Customer Service Practice Question
Which type of web resource should you use to display a custom interface that requires heavy interaction with the current session's data?
⚠ Common exam trap
Candidates often choose PCF controls or canvas apps for simple session data interactions when an HTML web resource is specifically suited for custom legacy or tailored UI needs.
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
✓
HTML web resource.
HTML web resources are the standard for custom UI development within the workspace. They allow for the integration of custom CSS and JavaScript to create tailored experiences that interact directly with the current record. This is a critical skill for consultants, as it allows them to create specialized layouts or data visualization tools that are not possible with out-of-the-box form configuration options.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
JSON file.
Why it's wrong here
JSON files are for configuration and data storage, not for rendering a user interface. They cannot be executed as a display component within the workspace, making them useless for creating interactive UI elements. Attempting to use a JSON file for this purpose will result in a display failure or no response.
- ✓
HTML web resource.
Why this is correct
HTML web resources are the primary supported way to embed custom UI content. By using HTML, CSS, and JavaScript, you can create a fully interactive interface that interacts with the session context and updates dynamically based on the data being viewed, providing a truly customized experience for the support agent.
- ✗
Text file.
Why it's wrong here
Text files do not contain the rendering logic necessary to display a user interface. They are treated as raw strings by the browser, meaning the workspace will not interpret or execute them as an interactive component. This approach will fail to provide any functional interface for the support agent.
- ✗
XML configuration file.
Why it's wrong here
XML files are used for defining configurations or data structures, not for building interactive front-end components. While they are crucial for system definitions, they lack the capability to be used as a dynamic, interactive UI web resource, making them the incorrect choice for extending the agent's visual workspace interface.
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Microsoft exam blueprint
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