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| Section | Weight | Objectives |
|---|---|---|
| Architecture | 18% | - Governor limits and bulkification - Design patterns and Apex trigger frameworks - Namespace and package management - Apex Enterprise Patterns |
| Data Modeling | 12% | - Advanced object relationships and data modeling - Large data volumes considerations - External objects and data sources |
| Integration | 15% | - Named Credentials and authentication - REST and SOAP web services (Apex callouts) - Platform Events and Change Data Capture - External Services and Connect REST API |
| User Interface | 18% | - Lightning Data Service - Lightning Web Components (LWC) advanced features - Visualforce advanced controllers - Aura Components |
| Logic and Process Automation | 22% | - Asynchronous Apex (Batch, Queueable, Future, Scheduled) - Invocable Actions and Platform Events - Advanced Apex programming - Dynamic Apex and SOQL/SOSL |
| Testing, Debugging, and Deployment | 15% | - Deployment tools (SFDX, Metadata API) - Debugging and performance profiling - Apex unit testing best practices - Test data strategies and mocking |
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NEW QUESTION # 114
When the sales team views an individual customer record, they need to see recent interactions for the customer. These interactions can be sales orders, phone calls, or Cases. The date range for recent interactions will be different for every customer record type.
How can this be accomplished?
Answer: B
Explanation:
A Lightning component can dynamically query and display interactions based on the customer's record type. The component can receive the record type as a parameter and adjust the query accordingly, providing the required functionality without batch processing or additional configurations.
NEW QUESTION # 115
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: D
Explanation:
@testSetup method improves test performance. It allows data sharing across test methods within a class, reducing redundant data creation.
NEW QUESTION # 116
Refer to the markup below:
A Lightning web component displays the Account name and two custom fields out of 275 that exist on the abject. The custom fields are correctly declared and populated. However, the developer receives complaints that the component performs slowly. What can the developer do to improve the performance?
Answer: D
Explanation:
To improve performance, the developer should specify only the fields needed by using the fields attribute in the lightning-record-form instead of loading all fields with layout-type="Full". This reduces the amount of data being retrieved and processed, thus improving the component's performance.
NEW QUESTION # 117
What are three reasons that a developer should write Jest tests for Lightning web components?
Choose 3 answers
Answer: A,C,E
Explanation:
Jest tests are essential for developing Lightning Web Components (LWC) because they allow developers to ensure the quality and correctness of their components in isolation from the rest of the application. Reason A is incorrect because testing non-public properties breaks encapsulation and is considered bad practice. B is correct because Jest tests can simulate user interactions with the component, such as clicking buttons or entering text, to ensure it behaves as expected. C is correct as well because Jest tests can confirm that the component renders the expected DOM output, which is crucial for ensuring that the HTML structure of the component is accurate. D is not the best choice since Jest is more suited for testing components in isolation rather than how multiple components interact; integration tests are more appropriate for that. Lastly, E is correct because Jest tests can verify that events are fired at the appropriate times, which is a critical part of the component's interaction with the rest of the application.
Reference
Jest Testing: Lightning Web Components Testing
Jest Testing Best Practices: Lightning Web Components Jest Best Practices
NEW QUESTION # 118
Which two queries are selective SOQL queries and can be used for a large data set of 200,000 Account records?
Choose 2 answers
Answer: A,C
Explanation:
Selective queries in SOQL are optimized for performance. Query B is selective because it filters out empty names, which are likely to be less in number. Query C is selective if the list of names is small, and 'Customer_Number_c' is indexed or can be used as an external ID field. Working with Very Large SOQL Queries
NEW QUESTION # 119
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