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| Section | Weight | Objectives |
|---|---|---|
| Performance | 12% | - Use caching mechanisms (Platform Cache, View State) - Optimize Apex and SOQL queries - Identify and resolve performance bottlenecks - Implement bulkify patterns |
| Lightning Component Framework | 14% | - Implement inheritance using base components - Debug Lightning component issues using browser developer tools - Use @track decorator and reactive properties correctly - Use Lightning Data Service to perform CRUD operations - Use component events and application events appropriately |
| Testing and Debugging | 14% | - Write Apex test classes with proper coverage - Analyze debug logs and resolve issues - Use Developer Console and debugging tools - Implement mock implementations for testing |
| Integration | 14% | - Handle integration errors and retry logic - Implement OAuth 2.0 authentication flows - Use REST API and SOAP API in Apex - Implement outbound messaging and callouts - Use Named Credentials and External Data Sources |
| Apex Programming | 18% | - Write and execute Apex triggers - Implement best practices for trigger logic - Use asynchronous Apex (future methods, queueable, batch) - Handle exceptions and implement error handling - Design and implement integration patterns |
| Data Modeling and Management | 14% | - Implement custom metadata and custom settings - Design complex data models with relationships - Handle large data volumes with indexing and partitioning - Use schema builder and relationship queries |
| Salesforce Platform Fundamentals | 14% | - Understand Salesforce architecture and Governor Limits - Use Process Builder and Flow appropriately - Understand the order of execution - Implement sharing and access control |
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NEW QUESTION # 80
A developer has working business logic code, but sees the following error in the test class:
You have uncommitted work pending. Please commit or rollback before calling out.
What is a possible solution?
Answer: B
Explanation:
The error "You have uncommitted work pending. Please commit or rollback before calling out" usually indicates that DML operations (like insert, update, delete) are being performed before a callout in a test context. This is not allowed because Salesforce does not support this sequence of operations in a single transaction. However, the use of seeAllData=true is generally not a recommended practice and does not address the core issue of mixed DML and callouts in tests. The correct solution is to use a mocking framework to simulate the callout response. By using Test.setMock(), developers can avoid performing actual callouts in test methods, thus bypassing the uncommitted work error.
References:
Apex Developer Guide - Testing HTTP Callouts
Apex Developer Guide - Isolation of Test Data from Organization Data in Unit Tests
NEW QUESTION # 81
A Salesforce Platform Developer is leading a team that is tasked with deploying a new application to production. The team has used source-driven development, and they want to ensure that the application is deployed successfully.
What tool or mechanism should be used to verify that the deployment is successful?
Answer: D
Explanation:
The Salesforce CLI with Salesforce DX can be used to execute and verify the deployment of metadata to production. It allows the developer to run specified tests and ensure that the deployment meets all required conditions for success.References: Salesforce DX Developer Guide
NEW QUESTION # 82
A developer created a Lightning web component mat allows users to Input a text value that is used to search for Accounts by calling an Apex method. The Apex method returns a list of account to apply and is called imperatively from a JavaScript event handler.
Which two changes should the developer make so the Apex method functions correctly.
Choose 2 answers
Answer: B,D
NEW QUESTION # 83
A developer wrote a class named AccountHistoryManager that relies on field history tracking. The class has a static method called getAccountHistory that takes in an account as a parameter and returns a list of associated AccountHistory object records.
The following test fails:
What should be done to make this test pass?
Answer: C
NEW QUESTION # 84
Given the following containment hierarchy:
HTML
<template>
<c-my-child-components></c-my-child-components>
</template>
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?
Answer: C
Explanation:
In Lightning Web Components (LWC), data flows "down" via properties and "up" via events. When a child component needs to communicate a change in a property or state to its parent, it must dispatch a CustomEvent. To pass specific data-such as the new value of the passthrough property-along with the event, the developer must use the detail property within the event initialization object.
Option C is the correct syntax. It creates a new CustomEvent named 'passthrough' and assigns the current value of the component's property (this.passthrough) to the detail key. The parent component can then listen for this event (using onpassthrough={handleEvent}) and access the value via event.detail. Option A is incorrect because it wraps the variable in quotes, passing the literal string "this.passthrough" instead of the actual data. Option B creates an event but fails to include the data payload, meaning the parent would know an event occurred but wouldn't receive the new value. Option D uses incorrect syntax for event naming and variable referencing. Using the standard CustomEvent constructor with the detail property is the platform- standard way to ensure robust, typed data communication between component layers in the Shadow DOM.
NEW QUESTION # 85
......
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