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PL-400 Microsoft Power Platform Developer

in Microsoft

Microsoft PL-400 Actual Exam Questions

Last updated on Oct 31, 2026.

429 Questions & Answers

Practice PL-400 questions and answers on Dataverse development, Power Apps, plug-ins and solution deployment. Select Reveal Solution after choosing your answer.

Question #1 Topic: Exam A

A canvas app must display records from Dataverse and let users navigate to a detail form. Which control should be used to show a selectable list?

  • A. Gallery
  • B. Timer
  • C. HTML text
  • D. PDF viewer
Reveal Solution
Correct Answer: A
A gallery displays a collection of records and supports selecting an item to navigate to a detail screen.
Question #2 Topic: Exam A

A plug-in must run synchronously before a Dataverse row is saved to validate the data. Which pipeline stage should be used?

  • A. PreOperation
  • B. PostOperation asynchronous
  • C. MainOperation after commit
  • D. Post-deployment
Reveal Solution
Correct Answer: A
PreOperation runs before the core operation and is suitable for synchronous validation or modifying data in the transaction.
Question #3 Topic: Exam A

An app must call an external REST service when a Dataverse row is created, without delaying the user save. What should be used?

  • A. Asynchronous plug-in or cloud flow
  • B. Synchronous PreValidation plug-in only
  • C. Business rule on the form
  • D. Calculated column
Reveal Solution
Correct Answer: A
An asynchronous extension or cloud flow can process an integration after the Dataverse transaction completes.
Question #4 Topic: Exam A

A developer needs to reuse a common set of UI components across multiple model-driven apps. What should be created?

  • A. A component library
  • B. A personal view
  • C. A business unit
  • D. A connection reference only
Reveal Solution
Correct Answer: A
Canvas component libraries allow reusable components to be shared across apps.
Question #5 Topic: Exam A

A solution must move environment-specific URLs between development and production without editing code. What should be used?

  • A. Environment variables
  • B. Hard-coded constants
  • C. Audit history
  • D. Security roles
Reveal Solution
Correct Answer: A
Environment variables store configuration values that can be changed per environment during solution deployment.

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