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| Section | Weight | Objectives |
|---|---|---|
| Integration | 14% | - Use REST API and SOAP API in Apex - Use Named Credentials and External Data Sources - Implement OAuth 2.0 authentication flows - Implement outbound messaging and callouts - Handle integration errors and retry logic |
| Apex Programming | 18% | - Design and implement integration patterns - Implement best practices for trigger logic - Handle exceptions and implement error handling - Write and execute Apex triggers - Use asynchronous Apex (future methods, queueable, batch) |
| Salesforce Platform Fundamentals | 14% | - Implement sharing and access control - Understand the order of execution - Use Process Builder and Flow appropriately - Understand Salesforce architecture and Governor Limits |
| Data Modeling and Management | 14% | - Design complex data models with relationships - Implement custom metadata and custom settings - Handle large data volumes with indexing and partitioning - Use schema builder and relationship queries |
| Performance | 12% | - Identify and resolve performance bottlenecks - Optimize Apex and SOQL queries - Implement bulkify patterns - Use caching mechanisms (Platform Cache, View State) |
| Testing and Debugging | 14% | - Implement mock implementations for testing - Write Apex test classes with proper coverage - Analyze debug logs and resolve issues - Use Developer Console and debugging tools |
| Lightning Component Framework | 14% | - Use @track decorator and reactive properties correctly - Use component events and application events appropriately - Use Lightning Data Service to perform CRUD operations - Implement inheritance using base components - Debug Lightning component issues using browser developer tools |
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NEW QUESTION # 94
A company has a Lightning page with many Lightning Components, some that cache reference data. It is reported that the page does not always show the most current reference data. What can a developer use to analyze and diagnose the problem in the Lightning page?
Answer: C
Explanation:
Comprehensive and Detailed 150 to 25110 words of Explana12tion:
The Salesforce Lightning Inspector is a Chrome DevTools extension used to investigate and optimize Lightning components. When a page fails to show the most current reference data, the issue often lies within the client-side caching mechanism. The Storage tab (A) is specifically designed to help developers inspect the client-side data stores used by the Lightning Data Service (LDS) and custom component caching.
In this tab, a developer can view the contents of the various storage caches (such as actions, records, and lists). It allows the developer to see exactly what data is currently stored in the cache, its expiration time, and whether the data is being retrieved from the server or served directly from the cache. By analyzing the Storage tab, a developer can determine if a component is incorrectly holding onto "stale" data instead of refreshing from the server.
The Actions tab (C) is useful for monitoring the status of server-side controller actions, and the Event Log (B) tracks the sequence of application and component events. However, for a data consistency issue specifically related to caching, the Storage tab provides the most direct visibility into the underlying cause. Using this tool, a developer can verify if the cache invalidation logic is working correctly or if the storage limits are causing unexpected data eviction.
NEW QUESTION # 95
What is the transaction limit for the number of records using QueryLocator?
Answer: B
Explanation:
Explanation
Explanation/Reference:
"Scope" parameter in "executeBatch" can be set up to 2,000 records
NEW QUESTION # 96
A developer is asked to modify a Lightning web component so that it displays in one column on phones and in two columns on tablets, desktops, and larger devices.
Given to the code below:
Which should the developer add to the code to meet the requirements?
Answer: A
Explanation:
The requirement is for the Lightning web component to display in one column on phones and in two columns on larger devices. To achieve this, we should specify the size attributes for different devices using the design tokens provided by the Lightning Design System.
Option B is correct because size="6" will set each lightning-layout-item to take up half the available space (since the grid system is based on a 12-column structure), creating two columns on tablets, desktops, and larger devices. small-device-size="12" will ensure that on small devices like phones, each item will take up the full width, resulting in a single column.
Options A, C, and D do not meet the requirement correctly, as they either do not set the size correctly for small devices or do not specify the sizes for both small and larger devices appropriately.
References:
Lightning Design System Grid Documentation: Lightning Grid
NEW QUESTION # 97
A page throws an 'Attempt to dereference a null object' error for a Contact.
What change in the controller will fix the error?
Answer: B
NEW QUESTION # 98 
The test method above tests an Apex trigger that the developer knows will make a lot of queries when a lot of Account are simultaneously updated to be customer.
The test method fails at the Line 20 because of too many SOQL queries
What is the correct way to fix this?
The test method above tests an Apex trigger that the developer knows will make a lot of queries when a lot of Accounts are simultaneously updated to be customers.
The test method fails at the Line 20 because of too many SOQL queries.
What is the correct way to fix this?
Answer: C
NEW QUESTION # 99
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