퍼펙트한Plat-Dev-301인증시험대비덤프공부최신덤프자료

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Salesforce Plat-Dev-301 Exam Syllabus Topics:

SectionObjectives
Topic 1: 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
          Topic 2: Data Modeling and Management- Advanced data modeling
          • 1. Complex relationships and schema design
            • 2. Large data volume considerations
              - Data access and security
              • 1. Security enforcement in Apex
                • 2. Sharing rules and Apex-managed sharing
                  Topic 3: Testing and Deployment- Deployment lifecycle
                  • 1. Change sets and deployment tools
                    • 2. Version control and CI/CD concepts
                      - Testing strategies
                      • 1. Code coverage and quality practices
                        • 2. Test data creation and mocking
                          Topic 4: Application Development- Advanced Apex programming
                          • 1. Dynamic Apex and metadata-driven development
                            • 2. Exception handling and debugging strategies
                              • 3. Apex design patterns and best practices
                                - Asynchronous processing
                                • 1. Scheduled Apex
                                  • 2. Future methods and limits considerations
                                    • 3. Batch Apex and Queueable Apex

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                                      Plat-Dev-301인증시험대비 덤프공부 완벽한 시험 최신 기출문제

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                                      최신 Salesforce Developer Plat-Dev-301 무료샘플문제 (Q37-Q42):

                                      질문 # 37
                                      As part of point-to-point integration, a developer must call an external web service which, due to high demand, takes a long time to provide a response. As part of the request, the developer must collect key Inputs from the end user before making the callout. Which two elements should the developer use to Implement these business requirements?
                                      Choose 2 answers

                                      정답：B,C

                                      설명：
                                      For implementing business requirements that involve collecting key inputs from the end user before making a long-running callout, a combination of a Lightning web component and an Apex method that returns a Continuation object is ideal. The Lightning web component can be used to build a user-friendly interface to collect the inputs, and the Continuation object in Apex allows for managing the callout in an asynchronous way. This pattern prevents the user interface from freezing and provides a better user experience by allowing the callout to run in the background.
                                      Apex Developer Guide - Asynchronous Callouts to Long-Running Web Services Lightning Web Components Developer Guide


                                      질문 # 38
                                      A company manages information about their product offerings in custom objects named Catalog and Catalog Item. Catalog Item has a master-detail field to Catalog, and each Catalog may have as many as 100,000 Catalog Items.
                                      Both custom objects have a CurrencylsoCode text field that contains the currency code they should use. If a Catalog's CurrencylsoCode changes, all of its Catalog Items' CurrencylsoCodes should be changed as well.
                                      What should a developer use to update the CurrencylsoCodes on the Catalog Items when the Catalog's CurrencylsoCode changes?

                                      정답：B

                                      설명：
                                      Use Database.Batchable for handling large data sets. It can efficiently process 100,000 Catalog Items asynchronously and update CurrencylsoCodes.


                                      질문 # 39
                                      A business requires that every parent record must have a child record. A developer writes an Apex method with two DML statements to insert a parent record and a child record.
                                      A validation rule blocks child records from being created. The method uses a try/catch block to handle the DML exception.
                                      What should the developer do to ensure the parent always has a child record?

                                      정답：B

                                      설명：
                                      By setting a savepoint before the DML operations and rolling back to that savepoint in the event of an exception, the developer can ensure that the parent record is not committed without a corresponding child record.
                                      Apex Developer Guide


                                      질문 # 40
                                      The use of the transient keyword in Visualforce page controllers helps with which common performance issue?

                                      정답：D

                                      설명：
                                      The transient keyword in Visualforce page controllers marks variables that should not be part of the view state, which can significantly reduce the size of the view state. This can help avoid view state limit errors and improve page performance because a smaller view state requires less time to send to the client.


                                      질문 # 41
                                      Given the following code:

                                      Assuming there were 10 Contacts and five Accounts created today, what is the expected result?

                                      정답：B

                                      설명：
                                      The loop contains a SOQL query inside, causing it to run multiple times. This will throw a QueryException because the Account query returns more than one row.


                                      질문 # 42
                                      ......

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