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Developer Essay Practice Exam
Question 1. Which Salesforce development approach is most suitable for implementing simple business logic without code? A) Apex Triggers B) Workflow Rules C) Visualforce Pages D) Lightning Web Components Answer: B Explanation: Workflow Rules allow for simple declarative automation without the need for code, making them ideal for basic business logic. Question 2. When should a Master-Detail relationship be used over a Lookup relationship in Salesforce data modeling? A) When child records need to exist independently B) When deleting parent should not affect children C) When child record’s ownership depends on the parent D) When you need to link records of different objects Answer: C Explanation: Master-Detail relationships tightly couple records so the child’s ownership and sharing settings are controlled by the parent. Question 3. What is the primary benefit of using a Trigger Framework in large-scale Salesforce applications? A) Enforces single trigger per object B) Increases code coverage C) Reduces DML limits D) Improves UI performance
Developer Essay Practice Exam
Answer: A Explanation: Trigger Frameworks help organize trigger logic and enforce the best practice of having a single trigger per object for maintainability. Question 4. How does the Singleton design pattern benefit Apex service classes? A) Allows multiple instances B) Prevents recursive triggers C) Ensures only one instance exists per execution context D) Improves Visualforce rendering Answer: C Explanation: Singleton pattern restricts instantiation to one object, helping manage shared resources efficiently during a transaction. Question 5. What is a recommended strategy to avoid hitting SOQL governor limits in Apex code? A) Hardcode Ids B) Use queries inside for loops C) Bulkify queries outside loops D) Use HTTP callouts Answer: C Explanation: Bulkifying queries ensures SOQL statements are executed outside loops, preventing governor limit exceptions. Question 6. In a multi-tenant architecture, why is code bulkification critical? A) To bypass platform security B) To minimize resource consumption for all tenants
Developer Essay Practice Exam
Question 9. Which solution is effective for reporting on millions of records with acceptable performance? A) Regular SOQL without indexes B) Skinny Tables and indexed fields C) Inline Visualforce charts D) Hardcoded filters Answer: B Explanation: Skinny Tables and indexed fields improve query speed and report performance with large data volumes. Question 10. What is the significance of using Test.startTest() and Test.stopTest() in Apex tests? A) To delete test data B) To commit DML changes C) To reset governor limits in test context D) To skip test methods Answer: C Explanation: Test.startTest()/Test.stopTest() create a new set of governor limits, allowing proper testing of bulk and asynchronous logic. Question 11. Which Apex keyword enforces object and field-level security checks automatically? A) with sharing B) without sharing C) inherited sharing D) WITH SECURITY_ENFORCED Answer: D
Developer Essay Practice Exam
Explanation: WITH SECURITY_ENFORCED in SOQL ensures CRUD/FLS checks are enforced in query results. Question 12. What is the main use of the stripInaccessible() method in Apex? A) To remove null fields B) To enforce FLS on query results C) To encrypt data D) To send email notifications Answer: B Explanation: stripInaccessible() removes fields from SObjects that the running user cannot access, enforcing FLS in code. Question 13. Which sharing keyword allows an Apex class to respect the context of the caller? A) with sharing B) without sharing C) inherited sharing D) global sharing Answer: C Explanation: inherited sharing lets the class inherit the sharing context of the caller, ensuring flexible security enforcement. Question 14. What is a primary benefit of using Apex Managed Sharing? A) Customizes record-level access programmatically B) Bypasses org-wide defaults C) Removes sharing rules
Developer Essay Practice Exam
B) To avoid cross-site scripting C) To prevent unauthorized form submissions D) To bypass login Answer: C Explanation: CSRF protection ensures that site actions are performed by legitimate users, preventing malicious cross-site requests. Question 18. Which tool is ideal for processing millions of records asynchronously in Salesforce? A) @future method B) Batch Apex C) Lightning Flow D) Validation Rule Answer: B Explanation: Batch Apex is designed for high-volume, asynchronous data processing in manageable batches. Question 19. When should Queueable Apex be preferred over @future methods? A) For simple DML operations B) When job chaining or getting job Id is needed C) For Visualforce rendering D) For data import Answer: B Explanation: Queueable Apex supports job chaining and provides a job Id for tracking, unlike @future methods.
Developer Essay Practice Exam
Question 20. What is the main advantage of Scheduled Apex? A) Real-time updates B) Running jobs at specific times or intervals C) Triggering DML D) API callouts Answer: B Explanation: Scheduled Apex allows developers to execute logic at defined times, supporting scheduled business processes. Question 21. Which SOQL best practice ensures queries are selective for optimal performance? A) Always use LIKE operator B) Use filters on indexed fields C) Query all fields D) Use aggregate functions only Answer: B Explanation: Filters on indexed fields increase selectivity and improve SOQL query performance, especially with LDV. Question 22. How do you perform a parent-to-child relationship query in SOQL? A) Using __r notation B) Using WHERE clause only C) Using child__c notation D) Using LIMIT keyword Answer: A
Developer Essay Practice Exam
D) By using workflows Answer: B Explanation: Static variables in handler classes help prevent triggers from recursively firing during a transaction. Question 26. Why is exception handling with try-catch blocks important in Apex? A) To bypass CRUD checks B) To gracefully handle errors and avoid uncommitted work C) To increase governor limits D) To enforce record types Answer: B Explanation: Exception handling ensures errors are caught, allowing for logging, user notification, and transaction rollback if needed. Question 27. What is the effect of a DML exception in a single Apex transaction? A) Only the failed record is not saved B) All changes in the transaction are rolled back C) The transaction continues with next record D) The debug log is deleted Answer: B Explanation: A DML exception in Apex causes all changes within that transaction to roll back, ensuring data consistency. Question 28. Which method is best for enforcing field-level security in Apex code? A) Using profiles only
Developer Essay Practice Exam
B) Using WITH SECURITY_ENFORCED in SOQL C) Using validation rules D) Hardcoding user permissions Answer: B Explanation: WITH SECURITY_ENFORCED enforces FLS checks on queried fields in Apex. Question 29. How can you simulate HTTP callout responses in Apex tests? A) Using Test.startTest() B) Using the HttpMock interface C) Using real API endpoints D) Using batch jobs Answer: B Explanation: HttpMock allows simulation of HTTP callouts for test coverage without real network calls. Question 30. What is the key advantage of using Named Credentials for integration? A) Hardcodes credentials in Apex B) Provides secure, centralized authentication management C) Disables callout limits D) Enables guest user access Answer: B Explanation: Named Credentials manage authentication securely and simplify integration configurations. Question 31. What is the main purpose of Platform Events in Salesforce? A) To process batch jobs
Developer Essay Practice Exam
Question 34. Why is code coverage important in Apex development? A) It increases API limits B) It is required for deployment to production C) It creates test records D) It enables debugging Answer: B Explanation: Salesforce enforces minimum code coverage for Apex code deployment to production, ensuring tested logic. Question 35. What is the benefit of using assertions in test methods? A) To skip test execution B) To verify expected outcomes and validate logic C) To increase governor limits D) To avoid DML statements Answer: B Explanation: Assertions check that code behaves as expected, validating both positive and negative scenarios. Question 36. How can Debug Logs be used to troubleshoot complex Salesforce logic? A) By disabling logging B) By reviewing execution flows and governor limit usage C) By deleting records D) By exporting data Answer: B
Developer Essay Practice Exam
Explanation: Debug Logs show execution details, helping identify errors and governor limit issues. Question 37. What is the best way to profile large Visualforce pages? A) By reducing test coverage B) By monitoring View State size and query performance C) By disabling FLS D) By increasing heap size Answer: B Explanation: Profiling the View State and optimizing queries helps improve Visualforce page performance. Question 38. Which design pattern should be used to provide a consistent interface to a group of related Apex classes? A) Strategy B) Singleton C) Factory D) Trigger Handler Answer: A Explanation: The Strategy pattern defines a family of algorithms and enables selection at runtime, ensuring consistent interfaces. Question 39. What is the primary use of the Service layer in an Apex application? A) To store test data B) To orchestrate business logic and call selectors C) To create custom settings
Developer Essay Practice Exam
C) Enhanced security D) Immediate deployment Answer: B Explanation: Querying excessive fields can exceed heap limits and slow down performance. Question 43. Why is the use of indexed fields critical in Large Data Volume scenarios? A) To create new objects B) To speed up queries and avoid full table scans C) To increase storage D) To enable validation rules Answer: B Explanation: Indexed fields allow the database to quickly locate records, making queries efficient even with millions of records. Question 44. What is the purpose of using aggregate SOQL queries? A) To process DML B) To summarize data (e.g., COUNT, SUM, AVG) C) To enforce FLS D) To increase test coverage Answer: B Explanation: Aggregate queries return summarized data, supporting reporting and analytics in Salesforce. Question 45. How does Salesforce ensure multi-tenancy does not compromise data security?
Developer Essay Practice Exam
A) By sharing all data B) By using logical data separation and security controls C) By disabling sharing rules D) By limiting API calls Answer: B Explanation: Salesforce uses logical separation, sharing, and security controls to keep tenant data isolated and secure. Question 46. Which keyword on an Apex class enforces sharing rules of the current user? A) with sharing B) without sharing C) global D) abstract Answer: A Explanation: The with sharing keyword enforces record-level sharing for the current user context. Question 47. What is the main benefit of using custom exceptions in Apex? A) To increase heap size B) To provide meaningful error messages and control error handling C) To bypass FLS D) To auto-deploy classes Answer: B Explanation: Custom exceptions communicate specific error conditions and support robust error handling.
Developer Essay Practice Exam
Explanation: Adding filters on indexed fields improves selectivity and avoids query errors. Question 51. Which deployment tool is best for managing changes across multiple Salesforce environments? A) Change Sets B) Data Loader C) Reports D) Apex Data Loader Answer: A Explanation: Change Sets are designed to deploy metadata between Salesforce environments. Question 52. What is the purpose of the System.runAs() method in Apex tests? A) To bypass governor limits B) To test logic under different user profiles and sharing contexts C) To delete records D) To disable triggers Answer: B Explanation: System.runAs() allows simulation of different user permissions and sharing contexts in unit tests. Question 53. When should you use Platform Events over Change Data Capture (CDC)? A) For real-time event-driven architecture with custom payloads B) For tracking all field changes C) For batch processing
Developer Essay Practice Exam
D) For static resource management Answer: A Explanation: Platform Events are customizable for specific integration scenarios, while CDC is for tracking field changes. Question 54. What is the primary function of an Apex Selector class? A) To perform DML B) To encapsulate and standardize SOQL queries C) To create objects D) To enforce sharing Answer: B Explanation: Selector classes centralize query logic, improving code reuse and maintainability. Question 55. How can you optimize Lightning component rendering performance? A) By loading all data at once B) By using lazy loading and efficient data retrieval C) By disabling FLS D) By increasing batch size Answer: B Explanation: Lazy loading reduces initial load time and enhances component responsiveness. Question 56. What does the “with sharing” keyword not enforce? A) Record-level sharing B) Field-Level Security
