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| Section | Weight | Objectives |
|---|---|---|
| User Interface Development | 20% | - Implement advanced Visualforce functionality - Optimize UI performance and usability - Build complex Lightning Web Components and Aura Components |
| Logic, Process Automation, and Integration | 27% | - Asynchronous Apex: future, queueable, batch, scheduled - Complex business logic and automation design - Advanced Apex programming and transaction management - REST/SOAP API, Platform Events, and external integrations |
| Testing, Debugging, and Deployment | 20% | - Debugging and error handling across layers - Advanced testing strategies and test frameworks - Deployment strategies, CI/CD, and change management |
| Performance and Data Management | 18% | - Optimize queries and handle large data volumes - Data modeling and complex data operations - Governor limits optimization and best practices |
| Advanced Developer Fundamentals | 15% | - Work with localization, multi-currency, and global features - Apply security best practices in development - Design and maintain scalable, reusable code |
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NEW QUESTION # 83
Which three Visualforce components can be used to initiate Ajax behavior to perform partial page updates?
Choose 3 answers
Answer: A,B,D
Explanation:
<apex:commandLink> and <apex:commandButton> components can cause the form data to be sent to the server and can be configured to refresh specific parts of the page.
<apex:actionSupport> adds AJAX support to other components and can trigger partial page updates based on events such as onclick, onchange, etc.
Visualforce Guide
NEW QUESTION # 84
Universal Containers analyzes a Lightning web component and its Apex controller class that retrieves a list of contacts associated with an account. The code snippets are as follows:
Based on the code snippets, what change should be made to display the contacts' mailing addresses in the Lightning web component?
Answer: D
Explanation:
To display the contacts' mailing addresses in the Lightning web component, both the SOQL query in the getAccountContacts method and the columns attribute in the JavaScript file of the component need to be updated. The query must include the MailingAddress field, and the JavaScript file must be modified to add this field to the columns shown in the lightning-datatable.
NEW QUESTION # 85
A Salesforce org has more than 50,000 contacts. A new business process requires a calculation that aggregates data from all of these contact records. This calculation needs to run once a day after business hours.
which two steps should a developer take to accomplish this?
Choose 2 answers
A)
B)
C)
D)
Answer: C,D
Explanation:
When dealing with large datasets and the need to perform complex calculations or data aggregation, batch Apex and scheduling are typically used to efficiently process records in batches and to execute the process during off-peak hours.
Option B is correct because using the @future annotation allows you to run methods in the background, but it is not suitable for operations that need to process more than 50,000 records, which is the governor limit for future methods.
Option C is correct because implementing the Schedulable interface allows you to schedule the class to run at specified times, such as after business hours, which is a requirement for this scenario.
Option A is incorrect because Queueable is typically used for chaining jobs and handling asynchronous processing of individual transactions, not for processing large datasets at scheduled times.
Option D is incorrect because the Database.Batchable interface is what's needed for processing large datasets, not Database.Stateful. The Database.Stateful interface is used to maintain state across batch job transactions.
Salesforce Developer Documentation on Using Batch Apex: Using Batch Apex Salesforce Developer Documentation on Scheduling Apex: Scheduling Apex
NEW QUESTION # 86
Which code snippet processes records in the most memory efficient manner, avoiding governor limits such as "Apex heap size too large"?
A)
B) C)
D)
Answer: B
Explanation:
Option D, which uses the Database.query() method in combination with a for loop, is the most memory-efficient way to process records. This is known as the Query Locator pattern, which allows you to work with a large number of records by querying them in batches. This approach helps to avoid hitting the governor limit for "Apex heap size too large" as it processes one record at a time from the database without storing the entire result set in memory.
Working with Very Large SOQL Queries
Apex Governor Limits
NEW QUESTION # 87
A developer implemented a custom data table in a Lightning web component with filter functionality. However, users are submitting support tickets about long load times when the filters are changed. The component uses an Apex method that is called to query for records based on the selected filters.
What should the developer do to improve performance of the component?
Answer: B
Explanation:
When faced with performance issues in a Lightning Web Component (LWC) due to SOQL query load times, the optimal approach is often to improve the query's selectivity. This can be achieved by using a selective SOQL query with a custom index. Salesforce can create custom indexes to improve the performance of queries that cannot be optimized through standard indexing. When a query is selective, it can efficiently retrieve records from the database using the index, thus reducing the query execution time and speeding up the component's performance when filters are changed. The other options (returning all records, using SOSL, or client-side caching) do not directly address the root cause of the performance issue, which is the need for a more efficient database operation.
Make SOQL Query Selective
Use of Indexes in SOQL Queries
NEW QUESTION # 88
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