Plat-Dev-301 Latest Exam Labs - Salesforce New Plat-Dev-301 Test Test: Salesforce Certified Platform Developer II - Multiple Choice Pass Success

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Salesforce Plat-Dev-301 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: User Interface	18%	- Aura Components - Lightning Data Service - Visualforce advanced controllers - Lightning Web Components (LWC) advanced features
Topic 2: Testing, Debugging, and Deployment	15%	- Apex unit testing best practices - Test data strategies and mocking - Debugging and performance profiling - Deployment tools (SFDX, Metadata API)
Topic 3: Architecture	18%	- Namespace and package management - Apex Enterprise Patterns - Design patterns and Apex trigger frameworks - Governor limits and bulkification
Topic 4: Integration	15%	- Platform Events and Change Data Capture - External Services and Connect REST API - Named Credentials and authentication - REST and SOAP web services (Apex callouts)
Topic 5: Data Modeling	12%	- Large data volumes considerations - External objects and data sources - Advanced object relationships and data modeling
Topic 6: Logic and Process Automation	22%	- Invocable Actions and Platform Events - Dynamic Apex and SOQL/SOSL - Asynchronous Apex (Batch, Queueable, Future, Scheduled) - Advanced Apex programming

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Salesforce Unparalleled Plat-Dev-301 Latest Exam Labs Pass Guaranteed Quiz

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Salesforce Certified Platform Developer II - Multiple Choice Sample Questions (Q158-Q163):

NEW QUESTION # 158
A developer creates an application event that has triggered an infinite loop.
What may have caused this problem?

A. The event is fired from a custom renderer.
B. The event has multiple handlers registered in the project.
C. The event handler calls a trigger.
D. An event is fired 'ontouchend'' and is unhandled.

Answer: B

Explanation:
The infinite loop in the application event could be caused by multiple handlers registered in the project. If the event is fired and then handled in such a way that the handling leads to the event being fired again, this can create a loop. Care must be taken to ensure that the handling of the event does not re-trigger the same event unintentionally.

NEW QUESTION # 159
Universal Containers analyzes a Lightning web component and its Apex controller class that retrieves a list of contacts associated with an account. The code snippets are as follows:

Based on the code snippets, what change should be made to display the contacts' mailing addresses in the Lightning web component?

A. Add a new method in the Apex controller class to retneve the mailing addresses separately and modify the Lightning web component to invoke this method.
B. Modify the SOQL query in the getAccountContacts method to include the MailingAddress field and update the columns attribute in javascript file to add Mailing address fields.
C. Extend the lightning-datatable component in the Lightning web component to include a column for the MailingAddress field.
D. Modify the SOQL guery in the getAccountContacts method to include the MailingAddress field.

Answer: B

Explanation:
To display the contacts' mailing addresses in the Lightning web component, both the SOQL query in the getAccountContacts method and the columns attribute in the JavaScript file of the component need to be updated. The query must include the MailingAddress field, and the JavaScript file must be modified to add this field to the columns shown in the lightning-datatable.

NEW QUESTION # 160
How should a developer assert that a trigger with an asynchronous process has successfully run?

A. Insert records into Salesforce, use seeAllData=true, then perform assertions.
B. Create all test data in the test class, invoke Test.startTest{} and Test.etopTaat {} and then perform assertions.
C. Create all test data, use future in the rest class, then perform assertions.
D. Create all test data in the test class, use system. runs {} to invoke the trigger, then perform assertions.

Answer: B

Explanation:
Use Test.startTest() and Test.stopTest(). These methods ensure asynchronous code runs within test execution and allows for accurate assertions.

NEW QUESTION # 161
A company has an Apex process that makes multiple extensive database operations and web service callouts. The database processes and web services can take a long time to run and must be run sequentially.
How should the developer write this Apex code without running into governor limits and system limitations?

A. Use Queueable Apex to chain the jobs to run sequentially.
B. Use Limits class to stop entire process once governor limits are reached.
C. Use multiple 3zutuze methods for each process and callout.
D. Use Apex Scheduler to schedule each process.

Answer: A

Explanation:
Queueable Apex is suitable for complex processes that require chaining jobs to run sequentially. It can handle long-running processes without hitting governor limits, as each chained job runs in a new transaction with its own set of governor limits.

NEW QUESTION # 162
Business rules require a Contact ta always be created when a new Account is created.
What can be used when developing a custom screen to ensure an Account is not created if the creation of the Contact fails?

A. Disable validation rules on Contacts and set default values with a trigger.
B. Use the Database. Insect method with a11orNone SEL LO alee,
C. Use setSaverpoint (1) and rollback() with a try-catch block.
D. Use the Database. Delete method if the Contact insertion fails.

Answer: C

Explanation:
When developing a custom screen that requires both an Account and Contact to be created together, using setSavepoint() and rollback() within a try-catch block is a reliable way to ensure that if the Contact creation fails, the Account creation is also rolled back, maintaining data integrity.

NEW QUESTION # 163
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