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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Testing, Debugging, and Deployment | 20% | - Debugging and error handling across layers - Advanced testing strategies and test frameworks - Deployment strategies, CI/CD, and change management |
| Topic 2: Advanced Developer Fundamentals | 15% | - Design and maintain scalable, reusable code - Work with localization, multi-currency, and global features - Apply security best practices in development |
| Topic 3: Performance and Data Management | 18% | - Optimize queries and handle large data volumes - Data modeling and complex data operations - Governor limits optimization and best practices |
| Topic 4: User Interface Development | 20% | - Optimize UI performance and usability - Implement advanced Visualforce functionality - Build complex Lightning Web Components and Aura Components |
| Topic 5: Logic, Process Automation, and Integration | 27% | - Advanced Apex programming and transaction management - Asynchronous Apex: future, queueable, batch, scheduled - REST/SOAP API, Platform Events, and external integrations - Complex business logic and automation design |
>> New Plat-Dev-301 Exam Question <<
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NEW QUESTION # 200
A developer needs to send Account records to an external system for backup purposes. The process must take a snapshot of Accounts as they are saved and then make a callout to a RESTful web service. The web service can only receive, at most, one record per call.
What should a developer do to implement these requirements?
Answer: B
NEW QUESTION # 201
A developer created an Apex class that updates an Account based on input from a Lightning web component that Is used to register an Account. The update to the Account should only be made if it has not already been registered.
What should the developer do to ensure that users do not overwrite each other's updates to the same Account if they make updates at the same time? A)
B)
C)
D)
Answer: A
Explanation:
When multiple users are updating the same record at the same time, there is a risk of overwriting each other's changes. Salesforce provides a mechanism called 'record locking' to prevent this from happening.
Option D is correct because including FOR UPDATE in the SOQL query locks the retrieved records for the duration of the transaction. This prevents other transactions from updating the record until the current transaction is complete, which is essential for avoiding race conditions where two users might overwrite each other's updates.
Option A is incorrect because while adding a try/catch block around the update operation is good practice for handling exceptions, it does not prevent overwrites from concurrent updates.
Option B is incorrect because using upsert instead of update does not address the problem of concurrent updates. The upsert operation is used to either insert a new record or update an existing one based on whether a record with a matching ID or external ID already exists.
Option C is incorrect because FOR UPDATE should be used in the SOQL query to lock the records, not in the SELECT statement itself.
Salesforce Developer Documentation on Locking Statements: Locking Statements Salesforce Developer Blog on Handling Concurrency in Apex: Handling Concurrency in Apex
NEW QUESTION # 202
Universal Containers (UC) has enabled the translation workbench and has translated picklist values. UC has a custom multi-select picklist field, Product__c, on the Account object that allows sales reps to specify which of UC's products an Account already has. A developer is tasked with writing an Apex method that retrieves Account records, including the Product_c field.
What should the developer do to ensure the value of Products__c is in the current user's language?
Answer: D
Explanation:
Using toLabel() in the SOQL query ensures that picklist values are returned in the user's language, which is necessary for organizations that have the translation workbench enabled.
Multi-language Solutions: [Salesforce Developer Guide](https://developer.salesforce.com/docs/atlas.en-us.soql_sosl.meta/soql_s
NEW QUESTION # 203
What is the optimal way to fix this?
A)
B)
C)
D)
Answer: B
Explanation:
Test.startTest() and Test.stopTest() should wrap the method call for resource allocation. Test.setMock() sets a mock callout for the test to handle callouts.
NEW QUESTION # 204
A developer is asked to develop a new AppFxchange application. A feature of the program creates Survey records when a Case reaches a certain stage and is of a certain Record Type. This feature needs to be configurable, as different Salesforce instances require Surveys at different times. Additionally, the out-of-the-box AppExchange app needs to come with a set of best practice settings that apply to most customers.
What should the developer use to store and package the custom configuration settings for the app?
Answer: B
Explanation:
Custom metadata is best for storing configurable settings. It's deployable, packageable, and upgradeable. Allows different configurations for different instances.
NEW QUESTION # 205
......
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