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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Logic and Process Automation | 22% | - Dynamic Apex and SOQL/SOSL - Asynchronous Apex (Batch, Queueable, Future, Scheduled) - Invocable Actions and Platform Events - Advanced Apex programming |
| Topic 2: User Interface | 18% | - Visualforce advanced controllers - Aura Components - Lightning Data Service - Lightning Web Components (LWC) advanced features |
| Topic 3: Architecture | 18% | - Namespace and package management - Apex Enterprise Patterns - Governor limits and bulkification - Design patterns and Apex trigger frameworks |
| Topic 4: Integration | 15% | - Platform Events and Change Data Capture - REST and SOAP web services (Apex callouts) - External Services and Connect REST API - Named Credentials and authentication |
| Topic 5: Data Modeling | 12% | - Large data volumes considerations - Advanced object relationships and data modeling - External objects and data sources |
| Topic 6: Testing, Debugging, and Deployment | 15% | - Apex unit testing best practices - Debugging and performance profiling - Deployment tools (SFDX, Metadata API) - Test data strategies and mocking |
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NEW QUESTION # 182
Users report that a button on a custom Lightning web component (LWC) is not saving the data they enter. The button looks to be clicked, but the LWC simply sits there, seemingly doing nothing.
What should the developer use to ensure error messages are properly displayed?
Answer: A
Explanation:
To ensure error messages are properly displayed in a Lightning web component, the developer should use JavaScript to handle errors in the component's client-side code and use HTML to display the message on the UI. This can be combined with Apex exception handling for server-side operations.
NEW QUESTION # 183
A developer is writing a Visualforce page that queries accounts in the system and presents a data table with the results. The users want to be able to filter the results based on up to five fields. However, the users want to pick the five fields to use as filter fields when they run the page.
Which Apex code feature is required to facilitate this solution?
Answer: A
Explanation:
The requirement described in the question calls for a flexible way to query records based on user-selected fields. Dynamic SOQL is the perfect tool for this job as it allows the construction of a SOQL string at runtime, which can include any number of fields and filter conditions that are determined at the time the user interacts with the page. This enables the creation of a highly customizable query interface. A, B, and C are not suitable for this requirement as they serve different purposes: A (Streaming API) is for receiving real-time streams of data changes, B (Metadata API) is for managing the metadata of your Salesforce org, and C (variable binding) is used in Visualforce to bind data between the page and the controller but does not provide dynamic query capabilities.
Reference
Dynamic SOQL: Dynamic SOQL in Apex Developer Guide
NEW QUESTION # 184
Which statement is considered a best practice for writing bulk safe Apex triggers?
Answer: D
Explanation:
Bulk-safe triggers use collections to aggregate DML operations. This practice minimizes the number of DML statements, which is essential for bulk processing.
NEW QUESTION # 185
A Visuzlforce page loads slowly due to the large amount of data it displays.
Which strategy can a developer use to improve the performance?
Answer: D
Explanation:
Lazy loading is a strategy to improve the performance of a Visualforce page that loads a large amount of data. By loading the data on demand, rather than in the controller's constructor, the initial page load is faster, and additional data is only loaded when necessary.
NEW QUESTION # 186
Consider the above 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?
Answer: A,D
Explanation:
Moving the SOQL query outside the loop prevents it from being executed multiple times, which can lead to hitting governor limits. The last line updating the accountList is indeed needed to save the changes made to the Account records, so removing it is not recommended. Instead, the query should be moved outside the loop and records should be collected in a map for efficiency, which is not one of the provided options. Reference:
Apex Developer Guide - Best Practices for Apex
NEW QUESTION # 187
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