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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 Mar. 23, 2026 (see below)
Which two best practices should the developer implement to optimize this code? Choose 2 answers
To optimize the code in question, it's important to follow best practices that reduce the number of SOQL queries and DML statements within loops, as these can quickly consume governor limits and lead to inefficiencies. Option C is correct because using a collection to hold records and performing a single DML operation outside of loops reduces the number of DML operations, which is a best practice for bulkifying code in Salesforce. Option D is also correct because querying records outside of a loop prevents hitting SOQL governor limits and makes the code more efficient. Options A and B are not correct in the context provided, as there isn't enough information to determine if changing the trigger context is necessary, and removing the DML statement altogether may not be feasible if the logic requires data to be persisted.
Reference
Apex Best Practices: Apex Developer Guide Best Practices
Universal Containers uses Big Objects to store almost a billion customer transactions called Customer_Transaction__b.
These are the fields on Customer_Transaction__b:
Account__c -
Program__c -
Points_Earned__c -
Location__c -
Transaction_Date__c -
The following fields have been identified as Index Fields for the Customer_Transaction__b object: Account__c, Program__c, and Transaction_Date__c.
Which SOQL query is valid on the Customer_Transaction__b Big Object?
The valid SOQL query on a Big Object must match the indexed fields exactly. Since Account__c, Program__c, and Transaction_Date__c are the indexed fields, the SOQL query must specify those fields exactly in the WHERE clause, including exact match conditions (no LIKE or INCLUDES).
A developer needs to implement a system audit feature that allows users, assigned to a custom profile named "Auditors", to perform searches against the historical records in the Account object. The developer must ensure the search is able to return history records that are between 6 and 12 months old.
Given the code below, which select statement should be inserted below as a valid way to retrieve the Account History records ranging from 6 to 12 months old?
A)
B)
C)
D)
Given the code snippet, the correct query to retrieve Account History records between 6 and 12 months old would be the one that includes a WHERE clause filtering records where the CreatedDate is greater than or equal to initialDate and less than or equal to endDate. Option B's statement does this correctly by using the >= and <= operators to define the range between initialDate (which is set to today's date minus 12 months) and endDate (set to today's date minus 6 months). Options A, C, and D either use incorrect comparison operators or compare against the wrong variables, resulting in an incorrect data set being returned.
Reference
SOQL Date Formats and Date Literals: SOQL and SOSL Reference Guide
A developer has a test class that creates test data before making a mock callout but now receives a 'You have uncommitted work pending. Please commit or rollback before calling out' error.
Which step should be taken to resolve the error?
When working with Apex tests that involve callouts, it's important to avoid the 'uncommitted work pending' error. This error typically occurs because DML operations (like inserts) are pending when a callout is attempted. Salesforce requires that all callouts are made before any DML operations in a transaction. To avoid this, the pattern is to insert the records before calling Test.startTest(), and then make the callout after this call. Test.startTest() marks the point where your actual test begins, and it resets the governor limits. By making the callout after this point, it ensures that the DML operations are committed and you are within a new execution context regarding governor limits.
Testing HTTP Callouts by Implementing the HttpCalloutMock Interface
Understanding Execution Contexts
A developer created a Lightning web component mat allows users to Input a text value that is used to search for Accounts by calling an Apex method. The Apex method returns a list of account to apply and is called imperatively from a JavaScript event handler.
Which two changes should the developer make so the Apex method functions correctly.
Choose 2 answers
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