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| Section | Weight | Objectives |
|---|---|---|
| Logic and Process Automation | 22% | - Asynchronous Apex (Batch, Queueable, Future, Scheduled) - Dynamic Apex and SOQL/SOSL - Invocable Actions and Platform Events - Advanced Apex programming |
| Integration | 15% | - External Services and Connect REST API - Named Credentials and authentication - Platform Events and Change Data Capture - REST and SOAP web services (Apex callouts) |
| User Interface | 18% | - Lightning Data Service - Lightning Web Components (LWC) advanced features - Aura Components - Visualforce advanced controllers |
| Testing, Debugging, and Deployment | 15% | - Test data strategies and mocking - Deployment tools (SFDX, Metadata API) - Apex unit testing best practices - Debugging and performance profiling |
| Data Modeling | 12% | - External objects and data sources - Advanced object relationships and data modeling - Large data volumes considerations |
| Architecture | 18% | - Design patterns and Apex trigger frameworks - Governor limits and bulkification - Apex Enterprise Patterns - Namespace and package management |
現在多くの会社では、特別なGAQM、EMC、ISC認証などを持っているなら、高い給料が得られています。我々の提供するPlat-Dev-301問題集はあなたに試験に順調に合格することができます。試験に参加する前に、我々の模擬問題集Plat-Dev-301資料が必要です。この問題集を選択したら、あなたは100％試験に合格することができます。
質問 # 117
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?
正解：B
解説：
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
質問 # 118
Given the following containment hierarchy:
What is the correct way to communicate the new value of a property named ''passthrough'' to my-parent-component if the property is defined within my-child-component?
A)
B)
C)
D)
正解：C
解説：
To communicate a property change up a containment hierarchy in Lightning Web Components (LWC), the child component should dispatch a custom event with the detail of the change. The parent component listens for this event and handles it accordingly.
Option A is the correct method because it creates a new custom event with the detail property containing the new value of passthrough. This event is then dispatched, and the parent component can listen for this event to handle the updated value.
Options B, C, and D are incorrect because they either don't pass any data with the event or they don't use the detail object which is the standard way to pass data with custom events in LWC.
Lightning Web Components Developer Guide - Communicating with Events
質問 # 119
A developer needs to store variables to control the style and behavior of a Lightning Web Component.
Which feature can be used to ensure that the variables are testable in both Production and all Sandboxes?
正解：B
解説：
Custom metadata types are the best feature for storing variables that control style and behavior of a Lightning Web Component. Unlike custom settings, custom metadata is deployable and testable in both Production and all Sandboxes.
質問 # 120
A company has an Apex process that makes multiple extensive database operations and web service callouts. The database processes and web services can take a long time to run and must be run sequentially.
How should the developer write this Apex code without running into governor limits and system limitations?
正解：D
解説：
Queueable Apex is suitable for complex processes that require chaining jobs to run sequentially. It can handle long-running processes without hitting governor limits, as each chained job runs in a new transaction with its own set of governor limits.
質問 # 121
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)
正解：C
解説：
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.
質問 # 122
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