Salesforce Plat-Dev-201 : Salesforce Certified Platform Developer

  • Exam Code: Plat-Dev-201
  • Exam Name: Salesforce Certified Platform Developer
  • Updated: Oct 20, 2026     Q & A: 240 Questions and Answers

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Salesforce Plat-Dev-201 Exam Syllabus Topics:

TopicDetails
Topic 1
  • User Interface: Covers building secure custom UIs using Lightning Web Components, Visualforce, and Flow, including component events, framework benefits, and preventing UI and data access security vulnerabilities.
Topic 2
  • Testing, Debugging, and Deployment: Covers writing tests for Apex and flows, using Salesforce developer tools (DX, CLI, Developer Console), debugging and monitoring system issues, and deploying code and configurations across environments.
Topic 3
  • Process Automation and Logic: Focuses on automating business logic using declarative tools and Apex, including SOQL
  • SOSL
  • DML, control flow, governor limits, transaction execution order, exception handling, and Apex classes and triggers best practices.
Topic 4
  • Developer Fundamentals: Covers Salesforce multi-tenant concepts, MVC and Lightning Component Framework, declarative vs. programmatic customization decisions, data modeling, and basic Agentforce use cases for developers.

Reference: https://trailheadacademy.salesforce.com/certificate/exam-platform-dev1---Plat-Dev-201

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Salesforce Certified Platform Developer Sample Questions:

Question #1

A developer is writing tests for a class and needs to insert records to validate functionality. Which annotation method should be used to create record for every method in the test class?

  • A. @StartTest
  • B. @TestSetup
  • C. @isTest (SeeAllData-true)
  • D. @FreTest
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Question #2

As part of new feature development, a developer is asked to build a responsive application capable of responding to touch events, that will be executed on stateful clients. Which two technologies are built on a framework that fully supports the business requirement? Choose 2 answers

  • A. Visualforce Pages
  • B. Vlsualforce Components
  • C. Lightning Web Components
  • D. Aura Components
Reveal Solution  Discussion  0

Correct Answer: A,B,D  🗳️

Question #3

Universal Containers decides to use exclusively declarative development to build out a new Salesforce application. Which three options should be used to build out the database layer for the application? Choose 3 answers

  • A. Roll-Up Summaries
  • B. Relationships
  • C. Custom Objects and Fields
  • D. Triggers
  • E. Flow
Reveal Solution  Discussion  0

Correct Answer: A,B,E  🗳️

Question #4

How should a developer write unit tests for a private method in an Apex class?

  • A. Use the SeeAllData annotation.
  • B. Mark the Apex class as global.
  • C. Use the TestVisible annotation.
  • D. Add a test method in the Apex class.
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

Question #5

Considering the following code snippet:

When the code executes a DML exception is thrown.
How should the developer modify the code to ensure exceptions are handled gracefully?

  • A. Implement the upsert DML statement.
  • B. Implement Change Data Capture
  • C. Implement a try/catch block for the DML.
  • D. Remove null items from the list if Accounts.
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

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