Salesforce Plat-Dev-201 Exam : Salesforce Certified Platform Developer

Exam Code: Plat-Dev-201
Exam Name: Salesforce Certified Platform Developer
Updated: Oct 13, 2026
Q & A: 240 Questions and Answers

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Salesforce Plat-Dev-201 Exam Syllabus Topics:

Topic	Details
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	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.
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	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.

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

Salesforce Certified Platform Developer Sample Questions:

Question #1

A developer must perform a complex SOQL query that joins two objects in a Lightning component.
How can the Lightning component execute the query?

A. Write the query in a custom Lightning web component wrapper ana invoke from the Lightning component,
B. Invoke an Apex class with the method annotated as &AuraEnabled to perform the query.
C. Create a flow to execjte the query and invoke from the Lightning component
D. Use the Salesforce Streaming API to perform the SOQL query.

Reveal Solution Discussion 0

Correct Answer: A 🗳️

Question #2

While working in a sandbox, an Apex test fails when run in the Test Runner. However, executing the Apex logic in the Execute Anonymous window succeeds with no exceptions or errors. Why did the method fail in the sandbox test framework but succeed in the Developer Console?

A. The test method Is calling an future method.
B. The test method relies on existing data in the sandbox.
C. The test method has a syntax error In the code.
D. The test method does not use System. rurAs to execute as a specific user.

Reveal Solution Discussion 0

Correct Answer: B 🗳️

Question #3

A development team wants to use a deployment script lo automatically deploy lo a sandbox during their development cycles.
Which two tools can they use to run a script that deploys to a sandbox? Choose 2 answers

A. Developer Console
B. Change Sets
C. SFDX CLI
D. VS Code

Reveal Solution Discussion 0

Correct Answer: C,D 🗳️

Question #4

Universal Container is building a recruiting app with an Applicant object that stores information about an individual person that represents a job. Each application may apply for more than one job. What should a developer implement to represent that an applicant has applied for a job?

A. Junction object between Applicant and Job
B. Formula field on Applicant that references Job
C. Lookup field from Applicant to Job
D. Master-detail field from Applicant to Job

Reveal Solution Discussion 0

Correct Answer: A 🗳️

Question #5

Uniersal Containers (UC) is developing a process for their sales teams that requires all sales reps to go through a set of scripted steps with each new customer they create. In the first steps of collecting information, UC's ERP system must be checked via as a REST endpoint to see if the customerexists. If the customer exists, the data must be presented to the sales rep in Salesforce.
Which two should a developer implement to satisfy the requirements? Choose2 answer

A. Trigger
B. Invocable method
C. Flow
D. Future method

Reveal Solution Discussion 0

Correct Answer: B,D 🗳️

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