Prepare confidently for the Salesforce Certified Platform Developer I Exam (CRT-450) with Exam Sage’s comprehensive practice test designed to sharpen your skills and boost your exam readiness. This practice exam is an essential resource for anyone aiming to validate their expertise in Salesforce platform development.
What Is This Product?
This practice test simulates the real CRT-450 exam environment with carefully crafted multiple-choice questions and detailed explanations. It is tailored to reflect the latest Salesforce exam syllabus and industry best practices, ensuring you gain hands-on experience and a deep understanding of core development concepts on the Salesforce platform.
What Will You Learn?
Apex programming fundamentals and best practices
Data modeling, management, and SOQL query optimization
Salesforce Lightning Component Framework essentials
Debugging, testing, and deployment strategies
Integration and asynchronous processing techniques
Security and sharing model implementation
Governor limits and performance tuning
Topics Covered:
Salesforce platform development lifecycle
Apex triggers and classes
Lightning components and event handling
Data access and manipulation
Testing strategies and code coverage
Asynchronous Apex including Batch, Queueable, and Future methods
Deployment tools and environment considerations
Debugging and error handling best practices
Security controls, sharing rules, and access modifiers
Why Choose Exam Sage for CRT-450: Salesforce Certified Platform Developer I Exam?
At ExamSage.com, we focus on delivering high-quality, up-to-date exam preparation materials that empower candidates to pass on the first attempt. Our CRT-450 practice exam is meticulously researched and regularly updated to align with Salesforce’s current exam blueprint. Alongside comprehensive questions and explanations, Exam Sage offers a user-friendly platform that helps you track your progress and target areas for improvement.
Get Ready to Pass Your Salesforce Certified Platform Developer I Exam
With Exam Sage’s practice test, you can build confidence, reinforce your learning, and master the essential skills needed to succeed in the CRT-450 exam. Start your journey toward Salesforce certification today and take the first step toward becoming a certified Salesforce Platform Developer.
Sample Questions and Answers
✅ 1. Which data type can store multiple unordered elements without duplicates in Apex?
A. List
B. Set
C. Map
D. Array
Answer: B. Set
Explanation: A Set is a collection of unordered elements that does not allow duplicates. It is ideal when uniqueness is required.
✅ 2. What is the purpose of the @AuraEnabled annotation in Apex classes?
A. To enable test coverage in Apex
B. To expose methods to Lightning components
C. To schedule Apex classes
D. To enforce security rules in SOQL
Answer: B. To expose methods to Lightning components
Explanation: @AuraEnabled allows Apex methods or properties to be accessed by Lightning components or Lightning Web Components.
✅ 3. Which SOQL statement returns the correct number of records in a List variable named contacts?
A. Integer count = contacts.size();
B. Integer count = contacts.length;
C. Integer count = contacts.count();
D. Integer count = size(contacts);
Answer: A. Integer count = contacts.size();
Explanation: .size() is the method used to determine the number of elements in a List.
✅ 4. Which trigger event allows access to the original field values before a record update?
A. After update
B. Before insert
C. After insert
D. Before update
Answer: D. Before update
Explanation: In a before update trigger, you can compare Trigger.old and Trigger.new to detect field changes.
✅ 5. How can governor limits be avoided when processing large data volumes in Apex?
A. Use loops inside queries
B. Avoid bulk operations
C. Use @future methods or batch Apex
D. Disable governor limits via annotations
Answer: C. Use @future methods or batch Apex
Explanation: Asynchronous Apex like @future and batch classes help manage large data processing without hitting governor limits.
✅ 6. What is the result of performing a DML operation inside a for loop?
A. Code executes faster
B. May cause governor limit exception
C. Improves readability
D. No impact
Answer: B. May cause governor limit exception
Explanation: DML inside loops can cause governor limits to be exceeded because each DML call consumes resources.
✅ 7. Which tool is used to inspect debug logs in Salesforce?
A. Schema Builder
B. Object Manager
C. Developer Console
D. Setup Audit Trail
Answer: C. Developer Console
Explanation: The Developer Console allows developers to inspect debug logs, execute SOQL, and more.
✅ 8. What is the correct way to define a trigger in Apex?
A. trigger MyTrigger on Account
B. trigger MyTrigger = Account()
C. trigger MyTrigger(Account acc)
D. trigger MyTrigger on Account (before insert, after update)
Answer: D. trigger MyTrigger on Account (before insert, after update)
Explanation: This is the proper syntax for a trigger, specifying the object and trigger events.
✅ 9. Which collection type uses key-value pairs in Apex?
A. List
B. Set
C. Map
D. Array
Answer: C. Map
Explanation: A Map stores data in key-value pairs, which is useful for referencing values via a key.
✅ 10. What is a characteristic of a Lightning Web Component (LWC)?
A. Built using Visualforce
B. Uses Apex only
C. Uses modern JavaScript and HTML
D. Cannot communicate with Apex
Answer: C. Uses modern JavaScript and HTML
Explanation: LWCs are built using standard web technologies like JavaScript, HTML, and CSS.
✅ 11. Which method enqueues an Apex job for asynchronous processing?
A. Database.insertAsync()
B. System.schedule()
C. Apex.enqueueJob()
D. System.runAsync()
Answer: C. Apex.enqueueJob()
Explanation: This is used to queue a job that implements the Queueable interface for asynchronous execution.
✅ 12. What happens if you try to update a field marked as read-only in a trigger?
A. Field gets updated
B. Compile-time error
C. Run-time exception
D. Gets ignored
Answer: C. Run-time exception
Explanation: Attempting to update read-only fields throws a runtime exception.
✅ 13. What does the with sharing keyword do in an Apex class?
A. Grants admin privileges
B. Ignores sharing rules
C. Enforces record-level security
D. Allows full data access
Answer: C. Enforces record-level security
Explanation: with sharing respects the sharing rules of the current user context.
✅ 14. What’s a benefit of Apex test classes?
A. Compiles faster
B. Runs asynchronously
C. Validates logic and improves deployment success
D. Bypasses governor limits
Answer: C. Validates logic and improves deployment success
Explanation: Test classes ensure logic correctness and are required for deploying Apex to production.
✅ 15. How do you reference a child-to-parent relationship in SOQL?
A. SELECT Name FROM Contact.Account
B. SELECT Account.Name FROM Contact
C. SELECT Contact.Account FROM Name
D. SELECT Parent.Account FROM Contact
Answer: B. SELECT Account.Name FROM Contact
Explanation: This syntax accesses the parent object’s field from the child record.
✅ 16. What is the maximum number of records returned by a SOQL query in Apex by default?
A. 1,000
B. 50,000
C. 2,000
D. 10,000
Answer: B. 50,000
Explanation: A single SOQL query in Apex can return up to 50,000 records.
✅ 17. What is the purpose of Test.startTest() and Test.stopTest()?
A. To start and stop logs
B. To set limits on tests
C. To reset governor limits and test asynchronous code
D. To initiate test coverage reports
Answer: C. To reset governor limits and test asynchronous code
Explanation: These methods provide a fresh limit window and control async execution during tests.
✅ 18. Which of the following is true about DML operations in Apex?
A. You must use DML for all object creations
B. Only works on standard objects
C. Cannot be performed in triggers
D. DML can throw exceptions
Answer: D. DML can throw exceptions
Explanation: Always handle DML exceptions using try-catch blocks.
✅ 19. Which of the following best prevents recursive triggers?
A. Using a static Boolean flag
B. Using @future methods
C. Disabling triggers in production
D. Using Test.isRunningTest()
Answer: A. Using a static Boolean flag
Explanation: Static variables help ensure a trigger doesn’t run multiple times recursively.
✅ 20. What is true about @future methods?
A. Must return a value
B. Executes immediately
C. Cannot make callouts
D. Must be static and void
Answer: D. Must be static and void
Explanation: @future methods must be static, return void, and optionally make callouts.
✅ 21. How is field-level security enforced in Apex?
A. Automatically by Apex
B. By checking using Schema.DescribeFieldResult
C. By using SOQL only
D. Not needed in Apex
Answer: B. By checking using Schema.DescribeFieldResult
Explanation: Apex does not enforce FLS by default; developers must do so manually using isAccessible().
✅ 22. Which statement properly uses the instanceof keyword?
A. if(myObj.instanceof Account)
B. if(myObj instanceof Account)
C. if(instanceof myObj Account)
D. if(Account instanceof myObj)
Answer: B. if(myObj instanceof Account)
Explanation: This syntax checks if an object is an instance of a particular class.
✅ 23. What happens when a trigger exceeds governor limits?
A. It restarts
B. It pauses
C. It fails and throws an unhandled exception
D. It queues for retry
Answer: C. It fails and throws an unhandled exception
Explanation: Exceeding limits causes runtime errors and halts execution.
✅ 24. What is an Apex interface?
A. A data type
B. A keyword to call Visualforce
C. A collection
D. A contract for methods a class must implement
Answer: D. A contract for methods a class must implement
Explanation: Interfaces define method signatures that implementing classes must define.
✅ 25. What are custom metadata types used for?
A. Store object records
B. Store UI components
C. Store reusable app configurations
D. Store debug logs
Answer: C. Store reusable app configurations
Explanation: Custom metadata types store configuration data deployable between orgs.
✅ 26. What’s the default sharing behavior of Apex classes?
A. With sharing
B. Without sharing
C. Depends on user profile
D. Inherited from trigger
Answer: B. Without sharing
Explanation: By default, Apex classes run without sharing unless explicitly stated.
✅ 27. Which DML statement returns a result with success or error for each record?
A. insert
B. Database.insert(records, false)
C. update
D. delete
Answer: B. Database.insert(records, false)
Explanation: The Database class allows partial success and returns a result array.
✅ 28. What should you avoid when writing Apex code?
A. Bulkification
B. Test coverage
C. Hardcoding IDs
D. Try-catch blocks
Answer: C. Hardcoding IDs
Explanation: Hardcoded IDs are not portable and fail across orgs. Always use dynamic references.
✅ 29. What is a valid use case for Queueable Apex?
A. Send emails synchronously
B. Perform quick calculations
C. Process large data asynchronously
D. Avoid using triggers
Answer: C. Process large data asynchronously
Explanation: Queueable Apex is ideal for async processing with better control than @future.
✅ 30. What is the role of a trigger context variable like Trigger.isInsert?
A. Indicates which database server is active
B. Specifies user permissions
C. Identifies the trigger event
D. Defines trigger schema
Answer: C. Identifies the trigger event
Explanation: Context variables help determine the nature of the DML event like insert, update, delete.
