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| Section | Weight | Objectives |
|---|---|---|
| Data Modeling | 12% | - Advanced object relationships and data modeling - External objects and data sources - Large data volumes considerations |
| User Interface | 18% | - Visualforce advanced controllers - Lightning Web Components (LWC) advanced features - Lightning Data Service - Aura Components |
| Testing, Debugging, and Deployment | 15% | - Deployment tools (SFDX, Metadata API) - Test data strategies and mocking - Debugging and performance profiling - Apex unit testing best practices |
| Integration | 15% | - REST and SOAP web services (Apex callouts) - Named Credentials and authentication - External Services and Connect REST API - Platform Events and Change Data Capture |
| Architecture | 18% | - Apex Enterprise Patterns - Namespace and package management - Governor limits and bulkification - Design patterns and Apex trigger frameworks |
| Logic and Process Automation | 22% | - Dynamic Apex and SOQL/SOSL - Advanced Apex programming - Asynchronous Apex (Batch, Queueable, Future, Scheduled) - Invocable Actions and Platform Events |
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NEW QUESTION # 116
An Aura component has a section that displays some information about an Account and it works well on the desktop, but users have to scroll horizontally to see the description field output on their mobile devices and tablets.
How should a developer change the component to be responsive for mobile and tablet devices? A)
B)
C)
D)
Answer: D
Explanation:
To make the Aura component responsive, the developer should set multipleRows="true" to allow the layout items to wrap onto multiple rows on smaller devices. Additionally, setting the size attribute for different device sizes ensures that the layout adapts to the screen width.
NEW QUESTION # 117
Refer to the code snippet below:
A custom object called Credit_Memo__c exists in a Salesforce environment. As part of a new feature development that retrieves and manipulates this type of record, the developer needs to ensure race conditions are prevented when a set of records are modified within an Apex transaction. In the preceding Apex code, how can the developer alter the query statement to use SOQL features to prevent race conditions within a transaction? A)
B)
C)
D)
Answer: D
Explanation:
To prevent race conditions during an Apex transaction, the SOQL query can be modified to include the "FOR UPDATE" keyword. This keyword locks the records that are returned by the query, preventing other transactions from modifying them until the current transaction is complete. This ensures that the retrieved records cannot be changed by another process before the current transaction is completed, thus preventing race conditions. The correct option to use in the code snippet provided is:
[SELECT Id, Name, Amount__c FROM Credit_Memo__c WHERE Customer_Id__c = :customerId LIMIT 50 FOR UPDATE] This will lock up to 50 records of Credit_Memo__c with the specified Customer_Id__c for the duration of the transaction.
FOR UPDATE
Preventing Record Update Conflicts
NEW QUESTION # 118
Refer to the Lightning component below:
The Lightning Component allows users to click a button to save their changes and then redirects them to a different page. Currently when the user hits the Save button, the records are getting saved, but they are not redirected. Which three techniques can a developer use to debug the JavaScript? Choose 3 answers
Answer: A,C,D
Explanation:
When debugging JavaScript in a Lightning Component, developers can utilize the following techniques:
A . Use console.log() messages in the JavaScript: This is a standard debugging technique to log information to the browser console, which can help trace the execution flow or output variable values.
B . Use the browser's dev tools to debug the JavaScript: Modern browsers come equipped with developer tools that can be used to set breakpoints, step through code, and inspect variables at runtime.
C . Enable Debug Mode for Lightning components for the user: Enabling Debug Mode for users provides more detailed error messages and unminified versions of client-side libraries, making it easier to debug issues.
Using the Developer Console to view checkpoints (Option D) and debug logs (Option E) is more relevant for Apex debugging rather than JavaScript.
Salesforce Documentation on Debugging Lightning Components: Debugging
NEW QUESTION # 119
A company notices that their unit tests in a test class with many methods to create many records for prerequisite reference data are slow.
What can a developer to do address the issue?
Answer: B
Explanation:
@testSetup method improves test performance. It allows data sharing across test methods within a class, reducing redundant data creation.
NEW QUESTION # 120
A developer wrote a test class that successfully asserts a trigger on Account, It fires and updates data correctly In a sandbox environment.
A Salesforce admin with a custom profile attempts to deploy this trigger via a change set into the production environment, but the test class falls with an Insufficient privileges error.
What should a developer do to fix the problem?
Answer: A
Explanation:
When a test class fails with an "Insufficient privileges" error during deployment, it indicates that the user profile under which the tests are being executed doesn't have the necessary permissions to perform the actions required by the test. In a sandbox, the test might have been running with a different set of permissions compared to the production environment.
By using System.runAs(), you can specify a user context in which the test should run, which allows you to simulate the appropriate permissions. For this to work, you need to create a User instance in your test class with the profile that has the necessary permissions and then enclose the logic of your test within a System.runAs() block with this user.
This is a preferred solution over seeAllData=true, which would give the test access to all data in the production environment, potentially leading to tests that are not isolated and thus less reliable. It's also preferred over changing organization-wide settings or relying on specific setup in test classes, such as making sure Test.startTest() is not inside a loop.
Salesforce Documentation on Using the runAs Method: Testing with the runAs Method Salesforce Help Article on System Permissions: Profiles and Permissions
NEW QUESTION # 121
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