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Salesforce Certified Platform Developer II (Plat-Dev-301) Exam Questions
- Topic 1: Advanced Developer Fundamentals: This topic assesses your mastery of foundational Salesforce developer concepts, including localization, sharing mechanisms, and advanced Apex coding practices. Through scenario-based questions, Salesforce developers will justify solutions, analyze Apex features, and evaluate integration techniques.
- Topic 2: Process Automation, Logic, and Integration: Your understanding of both declarative and programmatic interactions will be assessed through scenario-based challenges. You must showcase best practices in Apex triggers, error handling, and transactional integrity. Additionally, you will apply advanced SOQL, asynchronous Apex techniques, and dynamic Apex features to solve complex problems. Finally, your ability to implement publish/subscribe logic and programmatic integration for inbound and outbound communication will be evaluated.
- Topic 3: User Interface: This topic evaluates the ability of Salesforce developers to design and optimize Salesforce UI components using Lightning Web Components, Aura, and Visualforce. Salesforce developers will identify best practices, responsive design techniques, and methods to ensure seamless communication between components. Excelling here demonstrates your expertise in building dynamic, user-friendly Salesforce interfaces.
- Topic 4: Testing, Debugging, and Deployment: This topic challenges developers to implement advanced testing techniques and debugging strategies for Apex, Lightning components, and Visualforce. You'll address real-world scenarios requiring error isolation and optimized deployment processes. Mastery here highlights your readiness to deliver reliable and maintainable Salesforce solutions in professional environments.
- Topic 5: Performance: This topic measures your skills in optimizing Salesforce application performance. You will identify and resolve inefficiencies, design scalable solutions, and enhance system responsiveness. Success here underscores your ability to tackle complex performance challenges in large-scale Salesforce implementations.
Free Salesforce Salesforce Certified Platform Developer II (Plat-Dev-301) Exam Actual Questions
Note: Premium Questions for Salesforce Certified Platform Developer II (Plat-Dev-301) were last updated On Aug. 11, 2025 (see below)
Which three approaches should a developer implement to obtain the best performance for data retrieval when building a Lightning web component? Choose 3 answers
Lazy loading improves performance by loading data only when needed.
Lightning Data Service (LDS) handles data operations and caching efficiently.
Using {Cacheable=true} on Apex methods enables the Lightning Component framework to cache the method's return value, reducing server round-trips for the same data.
Lightning Web Components Developer Guide
Assuming the CreateOneAccount class creates one account and implements the
Queueable interface, which syntax properly tests the Apex code?
A)
B)
C)
D)
To test Queueable Apex, Test.startTest() and Test.stopTest() should be used to ensure the asynchronous code is executed before assertions are made. After calling Test.stopTest(), you would then query for the records to assert that the queueable job correctly created the Account records. Reference: Apex Developer Guide - Testing Asynchronous Apex
A developer is asked to find a way to store sacret data with an ability to specify which profiles and users can access which secrets.
What should be used to store this data?
Custom metadata types are the optimal way to store secret data that needs to be accessed by certain profiles and users. Access to custom metadata records can be controlled by the Salesforce sharing model. Reference: Salesforce Help - Custom Metadata Types Overview
A Visualforce page needs to make a callout to get billing information and tax information from two different REST endpoints. The information needs to be
displayed to the user at the same time and the return value of the billing information contains the input for the tax information callout. Each endpoint might take up to two minutes to process.
How should a developer implement the callouts?
Using Continuation for both callouts is the optimal solution when you have long-running callouts in a Visualforce page, as it allows the page to wait for a long-running process without tying up server resources. The Continuation pattern is specifically designed for scenarios where the request-response cycle could exceed the timeout limits. Reference: Visualforce Developer Guide -- Continuations
A developer created a Lightning web component for the Account record page that displays the five most recently contacted Contacts for an Account. The Apex method,
Contacts, returns a list of Contacts and will be wired to a property in the component.
Which two lines must change in the above code to make the Apex method able to be wired?
Choose 2 answers
To make an Apex method callable from a Lightning Web Component, you need to annotate the method with @AuraEnabled and mark it as cacheable if it's only retrieving data without modifying it. Additionally, the method must be public to be accessible from the component.
Line 04: Needs @AuraEnabled(cacheable=true) to allow the method to be called from the Lightning Web Component and indicate that the method doesn't modify any data, making it suitable for caching.
Line 09: The method getFiveMostRecent should not be private because private methods cannot be called from a Lightning Web Component. Changing it to public (or default, which is equivalent to public within the same namespace) is required.
Lightning Web Components and Salesforce Data: Developer Documentation
@AuraEnabled Annotation: Apex Developer Guide
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