PD2 practice questions 171–180

1. Question 171 · 279 in bank

   Select 2

   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 two.)

   • AProcess Builder
   • BApex method that returns a Continuation object
   • CLightning web component
   • DScreen Flow

   Show answer

   Answer: BD

   Explanation

   I think the correct answers are B and D. The requirement to collect major inputs from end users is generally a task that flows (especially screen flows) excel at. They can be configured and adjusted without special coding skills, which allows for faster implementation of business processes. On the other hand, the development and implementation of LWC generally require more advanced technical skills and time.

   Source: Adapted from community discussion — [Removed]

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2. Question 172 · 279 in bank

   As part of a new integration, a developer is asked to implement a new custom search functionality that is capable of performing unrestricted queries and can account for all values within a custom picklist field, Type__c, on the Opportunity object. The search feature must also account for NULL values. The organization-wide default for the Opportunity object is set to Public Read-Only, and a new custom index has been created for the Type__c field. There are more than 5 million Opportunity records within the environment, and a considerable amount of the existing records have NULL values for the picklist. Which technique should the developer implement to maximize performance when querying NULL values?

   • AUse a SOSL query to return ALL opportunities that have a value of NULL in any field.
   • BUse the OR operator to combine WHERE clauses to strictly search for each value within the picklist, including Type__c = NULL.
   • CPerform two SOQL queries; one to query Opportunities where Type__c != NULL, and another to query where Type__c = NULL, then join the result set using Apex.
   • DCreate a formula field that substitutes NULL values for a string of text, create an index for the formula field, then use the formula within the WHERE clause.

   Show answer

   Answer: D

   References

   • developer.salesforce.com documentation

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3. Question 173 · 279 in bank

   Select 3

   Universal Containers (UC) currently does all development in its full copy sandbox. Recently, UC has projects that require multiple developers to develop concurrently. UC is running into issues with developers making changes that cause errors in work done by other developers. Additionally, when they are ready to deploy, many unit tests fail which prevents the deployment. Which three types of orgs should be recommended to UC to eliminate these problems? (Choose three.)

   • AData Migration org
   • BDevelopment org
   • CSystems Integration org
   • DContinuous Integration (CI) Org
   • EStaging org

   Show answer

   Answer: BCE

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4. Question 174 · 279 in bank

   A developer wrote the following method to find all the test accounts in the org:

   

   However, the test method below fails.

   

   What should be used to fix this failing test?

   • ATest.loadData to set up expected data
   • B@isTear(SeeAllData=true) to access org data for the test
   • CTest.fixedSearchResults() method to set up expected data
   • D@testSetup method to set up expected data

   Show answer

   Answer: C

   References

   • developer.salesforce.com documentation

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5. Question 175 · 279 in bank

   Refer to the following code snippets:

   

   A developer is experiencing issues with a Lightning web component. The component must surface information about Opportunities owned by the currently logged-in user. When the component is rendered, the following message is displayed: "Error retrieving data". Which modification should be implemented to the Apex class to overcome the issue?

   • AEdit the code to use the without sharing keyword in the Apex class.
   • BUse the Cacheable=true attribute in the Apex method.
   • CUse the Continuation=true attribute in the Apex method.
   • DEnsure the OWD for the Opportunity object is Public.

   Show answer

   Answer: D

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6. Question 176 · 279 in bank

   Consider the following code snippet:

   

   How should the component communicate to the component that an order has been selected by the user?

   • ACreate and fire a standard DOM event.
   • BCreate and fire a component event.
   • CCreate and dispatch a custom event.
   • DCreate and fire an application event.

   Show answer

   Answer: C

   Explanation

   C. Lightning Web Components do not use Component and Application Events. Instead, they use standard browser DOM events (or custom events) for communicating up the containment hierarchy. It can be dispatched by calling the EventTarget.dispatchEvent()method.

   Source: Adapted from community discussion — RegNav

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7. Question 177 · 279 in bank

   @isTest static void testIncrement() { Account acct = new Account(Name = 'Test'); acct.Number_Of_Times_Viewed__c = 0; insert acct; AuditUtil.incrementViewed(acct.Id); Account acctAfter = [SELECT Number_Of_Times_Viewed__c FROM Account WHERE Id = :acct.Id][0] System.assertEquals(1, acctAfter.Number_Of_Times_Viewed__c); } The test method above calls an @future method that increments the Number_of_Times_Viewed__c value. The assertion is failing because the Number_of_Times_Viewed__c equals 0. What is the optimal way to fix this?

   • AChange the initialization to acct.Number_Of_Times_Viewed__c = 1.
   • BAdd Test.startTest() before and Test.stopTest() after AuditUtil.incrementViewed.
   • CAdd Test.startTest() before and Test.stopTest() after insert acct.
   • DChange the assertion to System.assertEquals(0, acctAfter.Number_Of_Times_Viewed__c).

   Show answer

   Answer: B

   Explanation

   B is correct because if async processing is enclosed between startTest and stopTest then system collects all async and processed them as sync.

   Source: Adapted from community discussion — ChiaSam

   References

   • developer.salesforce.com documentation

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8. Question 178 · 279 in bank

   A developer is working with existing functionality that tracks how many times a stage has changed for an Opportunity. When the Opportunity's stage is changed, a workflow rule is fired to increase the value of a field by one. The developer wrote an after trigger to create a child record when the field changes from 4 to 5. A user changes the stage of an Opportunity and manually sets the count field to 4. The count field updates to 5, but the child record is not created. What is the reason this is happening?

   • AAfter triggers fire before workflow rules.
   • BTrigger.new does not change after a field update.
   • CAfter triggers are not fired after field updates.
   • DTrigger.old does not contain the updated value of the count field.

   Show answer

   Answer: D

   References

   • Salesforce Help

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9. Question 179 · 279 in bank

   Select 2

   A Salesforce org has more than 50,000 contacts. A new business process requires a calculation that aggregates data from all of these contact records. This calculation needs to run once a day after business hours. Which two steps should a developer take to accomplish this? (Choose two.)

   • AUse the @future annotation on the method that performs the aggregate calculation.
   • BImplement the Schedulable interface in the class that contains the aggregate calculation method.
   • CUse the @readOnly annotation on the method that performs the aggregate calculation.
   • DImplement the Queuable interface in the class that contains the aggregate calculation method.

   Show answer

   Answer: BD

   Explanation

   BC "The @ReadOnly annotation allows you to perform less restrictive queries against the Lightning Platform database by increasing the limit of the number of returned rows for a request to 1,000,000. All other limits still apply. The annotation blocks the following operations within the request: DML operations, calls to System.schedule, and enqueued asynchronous Apex jobs."

   Source: Adapted from community discussion — Ullr

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10. Question 180 · 279 in bank

    Refer to the code below:

    

    When the code runs, it results in a System Limit Exception with the error message: Apex heap size too large. What should be done to fix this error?

    • AUse a SOQL for loop to process the data.
    • BConvert the List into a Set.
    • CUse Limits.getLimitHeapSize().
    • DUse a try/catch block to catch the error.

    Show answer

    Answer: A

    References

    • Salesforce Help

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PD2 practice, question 171. 279 questions available.