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Salesforce Plat-Dev-301 Exam Syllabus Topics:

Section	Objectives
Topic 1: Testing and Deployment	- Deployment lifecycle 1. Version control and CI/CD concepts 2. Change sets and deployment tools - Testing strategies 1. Code coverage and quality practices 2. Test data creation and mocking
Topic 2: Integration and APIs	- Platform events and messaging 1. Event-driven architecture 2. Change Data Capture concepts - External system integration 1. Callouts from Apex 2. REST and SOAP API usage
Topic 3: Application Development	- Asynchronous processing 1. Future methods and limits considerations 2. Batch Apex and Queueable Apex 3. Scheduled Apex - Advanced Apex programming 1. Dynamic Apex and metadata-driven development 2. Exception handling and debugging strategies 3. Apex design patterns and best practices
Topic 4: 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

>> Plat-Dev-301 Exam Syllabus <<

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Salesforce Certified Platform Developer II - Multiple Choice Sample Questions (Q184-Q189):

NEW QUESTION # 184
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?

A. Set a database savepoint to rollback if there are errors.
B. Use Catabase.inserc() and set the all = parameter to true,
C. Delete the parent record in the catch statement when an error occurs on the child record DML operation.
D. Use addExror() on the parent record if an error occurs on the child record.

Answer: A

Explanation:
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

NEW QUESTION # 185
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 Account for the Is Primary logic and a before update trigger on Contact for the last name logic.
C. 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.
D. Write a Validation Rule on the Contact 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 # 186
There is an Apex controller and a Visualforce page in an org that displays records with a custom filter consisting of a combination of picklist values selected by the user.
The page takes too long to display results for some of the input combinations, while for other input choices it throws the exception, "Maximum view state size limit exceeded".
What step should the developer take to resolve this issue?

A. Adjust any code that filters by picklist values since they are not indexed,
B. Use a StandardSetController or SOQL LIMIT in the Apex controller to limit the number of records displayed at a time.
C. Remove instances of the transient keyword from the Apex controller to avoid the view state error.
D. Split the layout to filter records in one Visualforce page and display the list of records in a second page using the same Apex controller.

Answer: B

Explanation:
To resolve the issue of the Visualforce page taking too long to display results or exceeding the view state limit, the developer should use a StandardSetController or implement SOQL LIMIT in the Apex controller. This limits the number of records that are processed and displayed at one time, which can prevent view state errors and improve performance.

NEW QUESTION # 187
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 implemented seealldata=true in the test method.
B. The test class has not defined an Account owner when inserting the test data.
C. The test class is not using System. runs () to run tests as a Salesforce administrator.
D. The test class has not re-queried the Account record after updating the Opportunity.

Answer: D

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 # 188
Which technique can run custom logic when a Lightning web component is loaded?

A. Call 52. engqueusiction and pass in the method to call.
B. Use an <aura:handler> init event to call a function.
C. Use the connectedCallback { } method.
D. Use the randersd loack { } method.

Answer: C

Explanation:
The connectedCallback() lifecycle hook in Lightning Web Components (LWC) is used to perform logic after a component is inserted into the DOM, making it the ideal place to execute custom logic when the component is loaded.

NEW QUESTION # 189
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