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Salesforce Plat-Dev-301 Exam Syllabus Topics:

Section	Objectives
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	- 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
Data Modeling and Management	- Data access and security 1. Sharing rules and Apex-managed sharing 2. Security enforcement in Apex - Advanced data modeling 1. Complex relationships and schema design 2. Large data volume considerations
Application Development	- Asynchronous processing 1. Scheduled Apex 2. Future methods and limits considerations 3. Batch Apex and Queueable Apex - Advanced Apex programming 1. Dynamic Apex and metadata-driven development 2. Apex design patterns and best practices 3. Exception handling and debugging strategies

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Salesforce Certified Platform Developer II - Multiple Choice Sample Questions (Q120-Q125):

NEW QUESTION # 120
A developer is creating a Lightning web component that displays a list of records in a lightning-datatable. After saving a new record to the database, the list is not updating.

What should the developer change in the code above for this to happen?

A. Add the @track decorator to the data variable.
B. Create a variable to store the result and call refreshpex().
C. Call rafrasnApex() ON this.dazta.
D. Create a new variable to store the result and annotate it with @track.

Answer: B

Explanation:
In Lightning Web Components (LWC), the data displayed in a component is not automatically refreshed when a new record is saved to the database. To refresh the displayed list of records in a lightning-datatable after a save operation, developers should use the refreshApex() function. This function is imported from the @salesforce/apex module and is used to refresh the cache and re-execute the Apex wire method to fetch the latest data from the server. The @track decorator is no longer necessary in most cases due to reactive properties being the default behavior in LWC as of Spring '20 release. Also, calling refreshApex() on this.data directly or creating a new tracked variable will not initiate a refresh of the cached data.
ferences:
Get Updated Data with refreshApex()
Lightning Web Components and Salesforce Data

NEW QUESTION # 121
A developer wrote a trigger on Opportunity that will update a custom Last Sold Date field on the Opportunity's Account whenever an Opportunity is closed. In the test class for the trigger, the assertion to validate the Last Sold Date field fails.
What might be causing the failed assertion?

A. The test class has not re-queried the Account record after updating the Opportunity.
B. The test class has not implemented seealldata=true in the test method.
C. The test class has not defined an Account owner when inserting the test data.
D. The test class is not using System. runs () to run tests as a Salesforce administrator.

Answer: A

Explanation:
The test class may not be re-querying the Account record after updating the Opportunity, which is necessary to verify the updated field values. If the test does not query the database to get the most recent data after the trigger runs, it will not see the changes made by the trigger.

NEW QUESTION # 122
A company recently deployed a Visualforce page with a custom controller that has a data grid of information about Opportunities in the org. Users report that they receive a "Maximum view state size limit" error message under certain conditions.
According to Visualforce best practice, which three actions should the developer take to reduce the view state?
Choose 3 answers

A. Refine any SOQL queries to return only data relevant to the page.
B. Use filters and pagination to reduce the amount of data.
C. Use the private keyword in the controller for variables,
D. Use the final keyword in the controller for variables that will not change.
E. Use the transient keyword in the Apex controller for variables that do not maintain state.

Answer: A,B,E

NEW QUESTION # 123
Assuming the CreateOneAccount class creates one account and implements the Queueable interface, which syntax properly tests the Apex code?
A)

B)

C)

D)

A. Option C
B. Option A
C. Option B
D. Option D

Answer: C

Explanation:
To test Queueable Apex, Test.startTest() and Test.stopTest() should be used to ensure the asynchronous code is executed before assertions are made. After calling Test.stopTest(), you would then query for the records to assert that the queueable job correctly created the Account records.

NEW QUESTION # 124
An org has a requirement that an Account must always have one and only one Contact listed as Primary. So selecting one Contact will de-select any others. The client wants a checkbox on the Contact called 'Is Primary' to control this feature.
The client also wants to ensure that the last name of every Contact is stored entirely in uppercase characters.
What is the optimal way to implement these requirements?

A. Write a single trigger on Contact for both after update and before update and callout to helper classes to handle each set of logic.
B. Write an after update trigger on Contact for the Is Primary logic and a separate before update trigger on Contact for the last name logic.
C. Write a Validation Rule on the Contact for the Is Primary logic and a before update trigger on Contact for the last name logic.
D. Write an after update trigger on Account for the Is Primary logic and a before update trigger on Contact for the last name logic.

Answer: A

Explanation:
A single trigger on Contact that handles both after update and before update events, utilizing helper classes for each logic set, is the most optimal implementation. It centralizes the logic for maintaining primary contacts and normalizing last names while allowing for clear separation of concerns through helper classes.

NEW QUESTION # 125
......

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