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Prepare for the Salesforce Certified Platform Developer (old) exam with our extensive collection of questions and answers. These practice Q&A are updated according to the latest syllabus, providing you with the tools needed to review and test your knowledge.
QA4Exam focus on the latest syllabus and exam objectives, our practice Q&A are designed to help you identify key topics and solidify your understanding. By focusing on the core curriculum, These Questions & Answers helps you cover all the essential topics, ensuring you're well-prepared for every section of the exam. Each question comes with a detailed explanation, offering valuable insights and helping you to learn from your mistakes. Whether you're looking to assess your progress or dive deeper into complex topics, our updated Q&A will provide the support you need to confidently approach the Salesforce PDI exam and achieve success.
The questions for PDI were last updated on Apr 21, 2026.
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When using Salesforce DX, what does a developer need to enable to create and manage scratch orgs?
To create and manage scratch orgs in Salesforce DX, the Dev Hub must be enabled in your Salesforce production or Developer Edition org. Dev Hub acts as the central hub for managing scratch orgs.
Incorrect Options:
A, B, C:Sandbox, Environment Hub, and Production are unrelated to scratch org creation.
A developer creates a custom exception as shown below:
public class ParityException extends Exception { }
What are two ways the developer can fire the exception in Apex?
Throwing Exceptions in Apex:
throw new ExceptionType();creates a new instance and throws it.
A: No argument constructor.
B: Constructor with a custom error message.
Why Not Other Options?
C and D: These create exception instances but do not throw them, which is not valid syntax for firing an exception.
A lead developer creates a virtual class called "OrderRequest". Consider the following code snippet:
How can a developer use the OrderRequest class within the CustomerOrder class?
In Apex, a class can extend a virtual class (similar to abstract classes in Java) by using theextendskeyword. This allows the subclass (CustomerOrder) to inherit properties and methods from the parent virtual class (OrderRequest).
Universal Containers wants a list button to display a Visualforce page that allows users to edit multiple records.
Which Visualforce feature supports this requirement?
TherecordSetVarattribute of the
Why not other options?
A: Standard controllers can be extended, but usingrecordSetVaris the direct and best-supported method for this scenario.
B: There is no such concept as a 'Custom List Controller' in Visualforce.
C:<spex:listButton>is not a valid Visualforce tag.
:
Visualforce Standard Controller with RecordSetVar
A developer is tasked to perform a security review of the ContactSearch Apex class that exists in the system. Within the class, the developer identifies the following method as a security threat:
ist
return Database.query('SELECT Id, FirstName, LastName FROM Contact WHERE LastName Like
s'+lastName+'s'")?;
What are two ways the developer can update the method to prevent a SOQL injection attack?
Choose 2 answers
Option A: Using variable binding eliminates the need for concatenating dynamic values in the query, which is the safest approach.
Option B: UsingString.escapeSingleQuotesensures special characters are handled safely, reducing the risk of SOQL injection.
Not Suitable:
Option C: Whilewith sharingensures sharing rules are applied, it does not prevent SOQL injection.
Option D: Regular expressions are not a reliable method for sanitizing input.
:Preventing SOQL Injection
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