Try 12 Microsoft Power Platform Developer (PL-400) sample questions and practice-test preview prompts on Dataverse customization, plugins, connectors, APIs, app lifecycle, Power Platform development, and solution extension scope.
PL-400 is a Microsoft Power Platform route for developers extending Power Platform with custom code, connectors, APIs, and ALM practices.
IT Mastery coverage for PL-400 is under review. Use this page to try 12 original sample questions, review the route fit, likely assessed areas, and related live practice pages.
Practice option: Sample questions available
Start with the 12 sample questions on this page. Dedicated practice for PL-400: Microsoft Power Platform Developer is not currently included as a full web-app practice page; enter your email to get updates when full practice becomes available or expands for this exam.
Need live practice now? See currently available IT Mastery exam pages.
| Area | Practical focus |
|---|---|
| Low-code solution design | Match app, automation, analytics, RPA, and architecture scenarios to the right platform capability. |
| Governance and ALM | Review environments, connectors, security, deployment, monitoring, and lifecycle choices. |
| AI and Copilot fit | Use Copilot and agent capabilities without losing core Power Platform control boundaries. |
| If you need practice now | Start here |
|---|---|
| AB-410 Intelligent Applications | AI-enabled Power Platform adjacent route. |
| AB-620 Copilot Studio Agents | Agent-building route. |
| GitHub Actions | Useful automation and delivery adjacent route. |
Try these 12 original sample questions for Microsoft PL-400. They are designed for self-assessment and are not official exam questions.
Topic: custom connector
A required API is not available through a standard connector. What should the developer consider?
Best answer: A
Explanation: PL-400 covers extending Power Platform when standard configuration is not enough.
What this tests: Designing custom connectors.
Topic: plugin scenario
Business logic must run synchronously when a Dataverse record is saved. What extension point may fit?
Best answer: B
Explanation: Developers use plug-ins for server-side Dataverse business logic.
What this tests: Choosing Dataverse extension points.
Topic: Power Fx
A canvas app needs conditional display and calculated values. What skill matters?
Best answer: C
Explanation: Power Fx is the expression language for canvas apps and other Power Platform logic.
What this tests: Using Power Fx correctly.
Topic: ALM
A developer must move changes through dev, test, and production with source control. What should be used?
Best answer: D
Explanation: PL-400 includes ALM for Power Platform components and code extensions.
What this tests: Managing Power Platform ALM.
Topic: JavaScript web resource
A model-driven form needs client-side validation before save. What can be used carefully?
Best answer: A
Explanation: Client-side form scripting can handle UI validation when low-code rules are insufficient.
What this tests: Extending model-driven forms.
Topic: PCF control
A model-driven app needs a custom interactive visualization not available out of the box. What should be considered?
Best answer: B
Explanation: PCF controls enable custom UI components for model-driven and canvas apps.
What this tests: Using PCF controls.
Topic: Dataverse API
An external service needs to create Dataverse records securely. What should be reviewed?
Best answer: C
Explanation: Developers must integrate through supported APIs and secure identity patterns.
What this tests: Integrating with Dataverse APIs.
Topic: error handling
A cloud flow fails silently after a connector timeout. What should the developer add?
Best answer: D
Explanation: Robust solutions handle connector failures and make errors visible.
What this tests: Designing resilient automation.
Topic: security
A custom extension runs with broader access than intended. What should be reviewed?
Best answer: A
Explanation: Custom code can bypass intended boundaries if execution context and permissions are wrong.
What this tests: Securing extensions.
Topic: solution dependencies
A deployment fails because a component depends on a missing table. What should the developer inspect?
Best answer: B
Explanation: Power Platform deployments require correct component dependencies and packaging.
What this tests: Troubleshooting solution deployment.
Topic: performance
A plug-in slows every save operation. What should be optimized?
Best answer: C
Explanation: Server-side extensions can affect user experience and transaction time.
What this tests: Optimizing Dataverse extensions.
Topic: route fit
A candidate writes custom code, connectors, APIs, plug-ins, and ALM for Power Platform. Which route is closest?
Best answer: D
Explanation: PL-400 is the Power Platform Developer route.
What this tests: Choosing the developer route.
Use this map to connect the sample questions to the Power Platform decisions this route usually tests.
flowchart LR
S1["Solution requirement"] --> S2
S2["Choose low-code or code extension"] --> S3
S3["Build connector plugin or component"] --> S4
S4["Secure API and data access"] --> S5
S5["Package with ALM"] --> S6
S6["Test and monitor behavior"]
| Cue | What to remember |
|---|---|
| Extension choice | Use code when low-code configuration cannot meet requirement, maintainability, or integration needs. |
| APIs and connectors | Securely expose or consume services through connectors and authenticated APIs. |
| Dataverse development | Know plugins, custom APIs, business events, and client-side extensibility boundaries. |
| ALM | Use solutions, source control, environment variables, pipelines, and deployment discipline. |
| Testing | Validate security, performance, error handling, and user experience after extensions. |
Use this page to review PL-400 sample questions and use the Notify me form for updates. The related pages below help you compare adjacent IT Mastery Power Platform practice options before choosing what to study next.