Plat-Dev-201指南 - Plat-Dev-201考試

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Salesforce Plat-Dev-201 考試大綱：

主題	簡介
主題 1	Developer Fundamentals: Covers Salesforce multi-tenant concepts, MVC and Lightning Component Framework, declarative vs. programmatic customization decisions, data modeling, and basic Agentforce use cases for developers.
主題 2	Testing, Debugging, and Deployment: Covers writing tests for Apex and flows, using Salesforce developer tools (DX, CLI, Developer Console), debugging and monitoring system issues, and deploying code and configurations across environments.
主題 3	User Interface: Covers building secure custom UIs using Lightning Web Components, Visualforce, and Flow, including component events, framework benefits, and preventing UI and data access security vulnerabilities.
主題 4	Process Automation and Logic: Focuses on automating business logic using declarative tools and Apex, including SOQL SOSL DML, control flow, governor limits, transaction execution order, exception handling, and Apex classes and triggers best practices.

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最新的 Salesforce Developers Plat-Dev-201 免費考試真題 (Q125-Q130):

問題 #125
A primaryid_c custom field exists on the candidate_c custom object. The filed is used to store each candidate's id number and is marked as Unique in the schema definition. As part of a data enrichment process. Universal Containers has a CSV file that contains updated data for all candidates in the system, the file contains each Candidate's primary id as a data point. Universal Containers wants to upload this information into Salesforce, while ensuring all data rows are correctly mapped to a candidate in the system.
Which technique should the developer implement to streamline the data upload?

A. Update the primaryid__c field definition to mark it as an External Id
B. Create a before Insert trigger to correctly map the records.
C. Create a Process Builder on the Candidate_c object to map the records.
D. Upload the CSV into a custom object related to Candidate_c.

答案：A

問題 #126
Universal Containers recently transitioned from Classic to Lighting Experience. One of its business processes requires certain value from the opportunity object to be sent via HTTP REST callout to its external order management system based on a user-initiated action on the opportunity page.
Example values are as follow:
Name
Amount
Account
Which two methods should the developer implement to fulfill the business requirement? (Choose
2 answers)

A. Create a Process Builder on the Opportunity object that executes an Apex immediate action to perform the HTTP REST callout whenever the Opportunity is updated.
B. Create a Visualforce page that performs the HTTP REST callout, and use a Visualforce quick action to expose the component on the Opportunity detail page.
C. Create an after update trigger on the Opportunity object that calls a helper method using
@Future(Callout=true) to perform the HTTP REST callout.
D. Create a Lightning component that performs the HTTP REST callout, and use a Lightning Action to expose the component on the Opportunity detail page.

答案：B,D

問題 #127
A custom Visualforce controller calls the ApexPages,addMessage () method, but no messages are rendering on the page.
Which component should be added to the Visualforce page to display the message?

A. <apex: pageMessage severity="info''/>
B. <Apex: message for='' info''/>
C. <apex: pageMessages />
D. <Apex: facet name='' message''/>

答案：C

問題 #128
Which two scenarios require an Apex method to be called imperatively from a Lightning web component? Choose 2 answer

A. Calling a method that makes a web service callout
B. Calling a method with the click of a button
C. Calling a method that is not annotated with cacheable-true
D. Calling a method that is external to the main controller for the Lightning web component

答案：C,D

問題 #129
A developer must perform a complex SOQL query that joins two objects in a Lightning component.
How can the Lightning component execute the query?

A. Create a flow to execjte the query and invoke from the Lightning component
B. Use the Salesforce Streaming API to perform the SOQL query.
C. Write the query in a custom Lightning web component wrapper ana invoke from the Lightning component,
D. Invoke an Apex class with the method annotated as &AuraEnabled to perform the query.

答案：C

問題 #130
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