Study Guide Plat-Dev-301 Pdf - Plat-Dev-301 Reliable Test Questions

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Salesforce Plat-Dev-301 Exam Syllabus Topics:

SectionObjectives
Integration and APIs- External system integration
  • 1. REST and SOAP API usage
    • 2. Callouts from Apex
      - Platform events and messaging
      • 1. Event-driven architecture
        • 2. Change Data Capture concepts
          Testing and Deployment- Testing strategies
          • 1. Test data creation and mocking
            • 2. Code coverage and quality practices
              - Deployment lifecycle
              • 1. Change sets and deployment tools
                • 2. Version control and CI/CD concepts
                  Application Development- Asynchronous processing
                  • 1. Scheduled Apex
                    • 2. Batch Apex and Queueable Apex
                      • 3. Future methods and limits considerations
                        - Advanced Apex programming
                        • 1. Exception handling and debugging strategies
                          • 2. Dynamic Apex and metadata-driven development
                            • 3. Apex design patterns and best practices
                              Data Modeling and Management- Advanced data modeling
                              • 1. Large data volume considerations
                                • 2. Complex relationships and schema design
                                  - Data access and security
                                  • 1. Security enforcement in Apex
                                    • 2. Sharing rules and Apex-managed sharing

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                                      Salesforce Certified Platform Developer II - Multiple Choice Sample Questions (Q192-Q197):

                                      NEW QUESTION # 192
                                      A developer is building a Lightning web component that retrieves data from Salesforce and assigns it to the record property.

                                      What must be done in the component to get the data from Salesforce? A)

                                      B) C)

                                      Answer: B

                                      Explanation:
                                      Option A is the correct answer. The @wire decorator is used in conjunction with getRecord from lightning/uiRecordApi to retrieve a record from Salesforce. The syntax @wire(getRecord, { recordId: '$recordId', fields: '$fields' }) sets up a reactive property, which means it will automatically rerun whenever the recordId or fields property changes.
                                      Get Record Data


                                      NEW QUESTION # 193
                                      Universal Containers has an Apex trigger on Account that creates an Account Plan record when an Account is marked as a Customer.
                                      Recently a record-triggered flow was added so that whenever an Account is marked as a Customer, a "Customer Since' date field is updated with today's date. Since the addition of the flow, two Account Plan records are created whenever the Account is marked as a Customer.
                                      What might cause this to happen?

                                      Answer: B

                                      Explanation:
                                      If a flow is configured to evaluate when a record is created and every time it's edited, and an Apex trigger also fires upon the same conditions, it could result in duplicate operations. In this case, two Account Plan records are created because both the flow and the trigger execute upon the Account being marked as a Customer.


                                      NEW QUESTION # 194
                                      A company has code to update a Request and Request Lines and make a callout to their external ERP system's REST endpoint with the updated records.

                                      The callousUtil.makeRestCallout fails with a "You have uncommitted work pending. Please commit or rollback before calling cut' error. What should be done to address the problem?

                                      Answer: B

                                      Explanation:
                                      The error occurs because DML operations were performed before a callout. To fix this, the callout should be made from an asynchronous method such as one annotated with @future(callout=true), which allows DML operations to be committed separately from the callout.
                                      nces: Apex Developer Guide - Making Asynchronous Callouts


                                      NEW QUESTION # 195
                                      A developer is trying to decide between creating a Visualforce component or a Lightning component for a custom screen.
                                      Which functionality consideration impacts the final decision?

                                      Answer: D

                                      Explanation:
                                      Visualforce can render pages as PDFs, which Lightning Components cannot do. This functionality is crucial if PDF rendering is required.


                                      NEW QUESTION # 196
                                      A developer used custom settings to store some configuration data that changes occasionally. However, tests are now Failing in some of the sandboxes that were recently refreshed.
                                      What should be done to eliminate this issue going forward?

                                      Answer: B

                                      Explanation:
                                      Replacing custom settings with custom metadata types is a good solution to ensure that test data is consistent across environments. Custom metadata types are deployable, and their records are available in test methods by default, unlike List Custom Settings which need to be manually recreated in each environment after a refresh.


                                      NEW QUESTION # 197
                                      ......

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