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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Advanced Developer Fundamentals | 15% | - Apply security best practices in development - Design and maintain scalable, reusable code - Work with localization, multi-currency, and global features |
| Topic 2: User Interface Development | 20% | - Optimize UI performance and usability - Implement advanced Visualforce functionality - Build complex Lightning Web Components and Aura Components |
| Topic 3: Testing, Debugging, and Deployment | 20% | - Advanced testing strategies and test frameworks - Debugging and error handling across layers - Deployment strategies, CI/CD, and change management |
| Topic 4: Performance and Data Management | 18% | - Data modeling and complex data operations - Optimize queries and handle large data volumes - Governor limits optimization and best practices |
| Topic 5: Logic, Process Automation, and Integration | 27% | - Complex business logic and automation design - Asynchronous Apex: future, queueable, batch, scheduled - Advanced Apex programming and transaction management - REST/SOAP API, Platform Events, and external integrations |
>> Exam Plat-Dev-301 Simulations <<
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NEW QUESTION # 68
Refer to the test method below''
The test method calls a web service that updates an external system with Account information and sets the Accounts integration_Updated__c checkbox to True when it completes. The test fails to execute and exits with an error: "Methods defined as TestMethod do not support Web service callouts." A) B)
C)
D)
Answer: A
Explanation:
The correct order in tests with callouts is Test.startTest(), then Test.setMock(), followed by the method invocation, and finally Test.stopTest(). This ensures the mock callout is used.
NEW QUESTION # 69
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?
Answer: C
Explanation:
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).
NEW QUESTION # 70
A developer wrote a trigger on Opportunity that will update a custom Last Sold Date field on the Opportunity's Account whenever an Opportunity is closed. In the test class for the trigger, the assertion to validate the Last Sold Date field fails.
What might be causing the failed assertion?
Answer: C
Explanation:
The test class may not be re-querying the Account record after updating the Opportunity, which is necessary to verify the updated field values. If the test does not query the database to get the most recent data after the trigger runs, it will not see the changes made by the trigger.
NEW QUESTION # 71
Which three actions must be completed in a Lightning web component for a JavaScript file In a static resource to be loaded? Choose 3 answers
Answer: A,B,D
NEW QUESTION # 72
A developer is creating a page in App Builder that will be used in the Salesforce mobile app.
Which two practices should the developer follow to ensure the page operates with optimal performance?
Choose 2 answers
Answer: B,D
Explanation:
For mobile app pages in App Builder, best practices include limiting the number of heavy components like Tabs and Accordion because they can negatively impact performance due to increased client-side processing and data transfer. Also, using Performance Analysis in App Builder helps in identifying components that may slow down page performance and provides recommendations for improvements. Reference:
Optimize Performance in the Salesforce Mobile App
Lightning App Builder Performance Analysis
NEW QUESTION # 73
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