Plat-Dev-301 by Salesforce Valid Free Exam Practice Test

Question 1

A developer implemented a custom data table in a Lightning web component with filter functionality. However, users are submitting support tickets about long load times when the filters are changed. The component uses an Apex method that is called to query for records based on the selected filters.
What should the developer do to improve performance of the component?

A. Use a selective SOQL query with a custom Index. B. Return all records into a list when the component is created and filter the array In JavaScript. C. Use SOSL to query the records on filter change. D. Use setstoraclel() in the Apex method to store the response In the client-side cache.

Correct Answer: A

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Question 2

A developer is debugging an Apex-based order creation process that has a requirement to have three savepoints, SP1, SP2, and 5P3 {created in order), before the final execution of the process.
During the final execution process, the developer has a routine to roll back to SP1 for a given condition. Once the condition is fixed, the code then calls 2 roll back to SP3 to continue with final execution. However, when the roll back to SP3 is called, a Funtime error occurs.
Why does the developer receive a runtime error?

A. SP3 became invalid when SP1 was rolled back. B. The developer used too many savepoints in one trigger session. C. The developer has too many DML statements between the savepoints. D. The developer should have called SF2 before calling SP3.

Correct Answer: A

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Question 3

Exhibit.

Given the code above, which two changes need to be made in the Apex Controller for the code to work? Choose 2 answers

A. Remove line 06 from the Apex Controller and instead use firstName in the return on line 07. B. Change the method signature to be global static, not public to String. C. Annotate the entire class as @AuraEnabled instead of just the single method. D. Change the argument in the Apex Controller line 05 from subject to string.

Correct Answer: A,D

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Question 4

Universal Containers allows customers to log into a Salesforce Community and update their orders via a custom Visualforce page. Universal Containers' sales representatives can edit the orders on the same Visualforce page.
What should a developer use in an Apex test class to test that record sharing is enforced on the Visualforce page?

A. use System. runsAs () to test as an administrator and a community user. B. use System. profiles=() to test as a sales rep and a community user. C. use System. profiles() to test as an administrator and a community user. D. use System. profiles1h=() to test as a sales rep and a community user.

Correct Answer: A

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Question 5

Universal Containers wants to notify an external system in the event that an unhandled exception occurs when their nightly Apex batch job runs.
What is the appropriate publish/subscribe logic to meet this requirement?

A. Have the external system subscribe to a standard Platform Event that gets fired. B. Have the external system subscribe to a customPlatform Event that gets fired with EventBus.publish(1, C. Have the external system subscribe to a custom Platform Event that gets fired with addError{). D. Have the external system subscribe to a standardPlatform Event that gets fired with with Eventbus.publish(1.

Correct Answer: B

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Question 6

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. Modify the SOQL guery in the getAccountContacts method to include the MailingAddress field. B. 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. C. 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. D. Extend the lightning-datatable component in the Lightning web component to include a column for the MailingAddress field.

Correct Answer: C

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Question 7

A developer wants to write a generic Apex method that will compare the Salesforce Name field between any two object records. For example, to compare the Name field of an Account and an Opportunity; or the Name of an Account and a Contact.
Assuming the Name field exists, how should the developer do this?

A. Use a string. Replace () method to parse the contents of each Name field and then compare the results. B. describe) function to compare the values of each Name field. C. Use the Salesforce Metadata API to extract the value of each object and compare the Name fields. D. Cast each object into an sObject and use sObject.get to compare the Name fields.

Correct Answer: D

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Question 8

Refer to the test method below''

The test method calls a web service that updates an external system with Account information and sets the Accounts integration_Updated__c checkbox to True when it completes. The test fails to execute and exits with an error: "Methods defined as TestMethod do not support Web service callouts." A) B)

C)

D)

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

Correct Answer: A

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Question 9

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

Correct Answer: C

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Question 10

An environment has two Apex triggers: an after-update trigger on Account and an after-update trigger on Contact.
The Account after-update trigger fires whenever an Account's address is updated, and it updates every associated Contact with that address. The Contact after-update trigger fires on every edit, and it updates every Campaign Member record related to the Contact with the Contact's state.
Consider the following: A mass update of 200 Account records' addresses, where each Account has 50 Contacts. Each Contact has one Campaign Member. This means there are 10,000 Contact records across the Accounts and 10,000 Campaign Member records across the contacts.
What will happen when the mass update occurs?

A. There will be no error, since each trigger fires within its own context and each trigger does not exceed the limit of the number of records processed by DML statements. B. The mass update will fail, since the two triggers fire in the same context, thus exceeding the number of records processed by DML statements. C. There will be no error and all updates will succeed, since the limit on the number of records processed by DML statements was not exceeded. D. The mass update of Account address will succeed, but the Contact address updates will fail due to exceeding number of records processed by DML statements.

Correct Answer: B

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Question 11

Refer to the following code snippet:

A developer created a JavaScript function as part of a Lightning web component (LWC) that surfaces information about Leads by wire calling geyFetchLeadList whencertain criteria are met. Which three changes should the developer implement in the Apex class above to ensure the LWC can display data efficiently while preserving security? Choose 3 answers

A. Annotate the Apex method with @AuraEnabled(Cacheable=True). B. Annotate the Apex method with @AuraEnabled. C. Implement the with keyword in the class declaration. D. Use the WZ E D clause within the SOQL query. E. Implement the with sharing keyword in the class declaration.

Correct Answer: A,B,E

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Salesforce Certified Platform Developer II - Multiple Choice - Plat-Dev-301 Exam Practice Test