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| Section | Weight | Objectives |
|---|---|---|
| Data Modeling | 12% | - External objects and data sources - Large data volumes considerations - Advanced object relationships and data modeling |
| User Interface | 18% | - Aura Components - Visualforce advanced controllers - Lightning Web Components (LWC) advanced features - Lightning Data Service |
| Integration | 15% | - Named Credentials and authentication - Platform Events and Change Data Capture - External Services and Connect REST API - REST and SOAP web services (Apex callouts) |
| Testing, Debugging, and Deployment | 15% | - Apex unit testing best practices - Deployment tools (SFDX, Metadata API) - Test data strategies and mocking - Debugging and performance profiling |
| Architecture | 18% | - Governor limits and bulkification - Apex Enterprise Patterns - Namespace and package management - Design patterns and Apex trigger frameworks |
| Logic and Process Automation | 22% | - Invocable Actions and Platform Events - Asynchronous Apex (Batch, Queueable, Future, Scheduled) - Dynamic Apex and SOQL/SOSL - Advanced Apex programming |
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NEW QUESTION # 179
A company has a native iOS order placement app that needs to connect to Salesforce to retrieve consolidated information from many different objects in a JSON format.
Which is the optimal method to implement this in Salesforce?
Answer: A
Explanation:
Apex REST web services are the best method for creating custom endpoints that return data in a specific format, such as JSON, which is perfect for a native iOS application that needs to integrate with Salesforce for retrieving data.
NEW QUESTION # 180
Refer to the following code snippets:
A developer is experiencing issues with a Lightning web component. The component must surface information about Opportunities owned by the currently logged-in user.
When the component is rendered, the following message is displayed: "Error retrieving data". Which modification should be implemented to the Apex class to overcome the issue?
Answer: C
Explanation:
The @AuraEnabled(cacheable=true) attribute allows caching of method results on the client side, reducing server trips for already fetched data, which is useful for read-only data.
NEW QUESTION # 181
Which technique can run custom logic when a Lightning web component is loaded?
Answer: B
Explanation:
The connectedCallback() lifecycle hook in Lightning Web Components (LWC) is used to perform logic after a component is inserted into the DOM, making it the ideal place to execute custom logic when the component is loaded.
NEW QUESTION # 182
Consider the below trigger intended to assign the Account to the manager of the Account's region:
Which two changes should a developer make in this trigger to adhere to best practices? Choose 2 answers A)
B)
C)
D)
Answer: A,D
Explanation:
The best practices for writing triggers in Salesforce include bulkifying your code to handle multiple records efficiently and reducing the number of SOQL queries, especially within loops, to avoid hitting governor limits.
Option B is correct because moving the SOQL query outside of the for loop is essential to bulkify the trigger. Performing a query within a loop can cause a SOQL governor limit to be reached if the trigger is processing many records. The best practice is to collect all necessary data before the loop starts and then process it within the loop.
Option C is correct as well, because using a Map to cache the results of a SOQL query by Id is another way to bulkify the code. This allows you to query all the necessary data once and then access it efficiently in memory, avoiding repeated queries.
Option A is incorrect because adding isExecuting before the update doesn't address any best practices related to bulkification or SOQL query optimization.
Option D is incorrect because the last line should not be removed if the developer intends to perform DML on the accountList. However, this line should be outside of the loop and is unnecessary if the trigger context is 'before insert' or 'before update', since in those contexts, changes to records in Trigger.new are implicitly saved without the need for explicit DML.
Apex Developer Guide on Triggers: Triggers and Order of Execution
Salesforce Developer Blog on Trigger Best Practices: Trigger Best Practices
NEW QUESTION # 183
A developer is creating a Lightning web component to display a calendar. The component will be used in multiple countries. In some locales, the first day of the week is a Monday, or a Saturday, or a Sunday. 'What should the developer do to ensure the calendar displays accurately for users in every locale?
Answer: D
Explanation:
Use the @salesforce/i18n module with the firstDayOfWeek property. It provides locale-aware functionality essential for internationalization.
NEW QUESTION # 184
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