Salesforce PDI Online Practice Questions and Exam Preparation

Salesforce PDI Online Questions & Answers

• Question 71:

  Universal Containers has implemented an order management application. Each Order can have one or more Order Line items. The Order Line object is related to the Order via a master-detail relationship. For each Order Line item, the total price is calculated by multiplying the Order Line item price with the quantity ordered.

  What is the best practice to get the sum of all Order Line item totals on the Order record?

  A. Roll-up summary field
  B. Formula field
  C. Apex trigger
  D. Quick action
  A. Roll-up summary field

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  Explanation

  A roll-up summary field is the best practice for aggregating values (e.g., sum, count, or average) from child records in a master-detail relationship. This feature automatically calculates the sum of all Order Line item totals and displays it on the parent Order record.

• Question 72:

  Which two are best practices when it comes to Aura component and application event handling? Choose 2 answers

  A. Try to use application events as opposed to component events.
  B. Reuse the event logic in a component bundle, by putting the logic in the helper.
  C. Use component events to communicate actions that should be handled at the application level.
  D. Handle low-level events in the event handler and re-fire them as higher-level events.
  B. Reuse the event logic in a component bundle, by putting the logic in the helper.
  D. Handle low-level events in the event handler and re-fire them as higher-level events.

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  Explanation

  Option B: Reusing event logic in the helper ensures cleaner and reusable code.

  Option D: Handling low-level events in handlers and re-firing them as higher-level events allows for better abstraction and modularity.

• Question 73:

  Consider the following code snippet:

  

  Given the multi-tenant architecture of the Salesforce platform, what is a best practice a developer should implement and ensure successful execution of the method?

  A. Avoid using variables as query filters.
  B. Avoid returning an empty List of records.
  C. Avoid performing queries inside for loops.
  D. Avoid executing queries without a limit clause.
  C. Avoid performing queries inside for loops.

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  Explanation

  Performing queries inside a loop can lead to governor limit exceptions due to too many SOQL queries in a single transaction. Instead, perform queries outside loops.

• Question 74:

  What are three considerations when using the @lnvocableMethod annotation in Apex? Choose 3 answers

  A. Only one method using the @invecableMethod annotation can be defined per Apex class_
  B. A method using the @invecableMethod annotation can have multiple input parameters.
  C. A method using the @invocablemethod annotation must be declaredas static,
  D. GO A method using the @invocablemethod annotation must define a return value.
  E. A method using the @invocableMethod annotation can be declared as Public or Global.
  A. Only one method using the @invecableMethod annotation can be defined per Apex class_
  C. A method using the @invocablemethod annotation must be declaredas static,
  E. A method using the @invocableMethod annotation can be declared as Public or Global.

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  Explanation

  Option A: Only one method annotated with @InvocableMethod can exist per class.

  Option C: The method must be static.

  Option E: The method can be declared as Public or Global for broader accessibility.

• Question 75:

  Which annotation exposes an Apex class as a RESTful web service?

  A. @RemoteAction
  B. @RestResource (urlMapping='/myService/*"')
  C. @HttpInvocable
  D. @Aurabnabled(cacheable=true)
  B. @RestResource (urlMapping='/myService/*"')

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  Explanation

  The @RestResource annotation exposes an Apex class as a RESTful web service. The urlMapping parameter defines the endpoint's URL.

• Question 76:

  A developer considers the following snippet of code:

  

  Based an this code, what is the value of x?

  A. 1
  B. 2
  C. 3
  D. 4
  D. 4

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  Explanation

  The Boolean isOK variable is declared but not initialized, meaning its value is null by default in Apex.

  The code evaluates the if-else conditions in sequence:

  Condition 1: isOK == false andand theString == 'Hello'

  isOK is null, so this evaluates to false.

  Condition 2: isOK == true andand theString == 'Hello'

  Again, isOK is null, so this evaluates to false.

  Condition 3: isOK != null andand theString == 'Hello'

  isOK is null, so isOK != null evaluates to false.

  Else block: None of the above conditions are true, so the code enters the else block and sets x = 4.

  References: Apex Boolean Data Type

• Question 77:

  code below deserializes input into a list of Accounts.

  

  Which code modification should be made to insert the Accounts so that field-level security is respected?

  A. 01: Public with sharing class AcctCreator
  B. 05: If (SobjectType.Account, isCreatable())
  C. 05: Accts = database.stripinaccesible (accts, Database. CREATEABLE);
  D. 05: SobjectAcessDecision sd= Security,stripINaccessible(AccessType,CREATABLE,
  A. 01: Public with sharing class AcctCreator

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  Explanation

• Question 78:

  A developer migrated functionality from JavaScript Remoting to a Lightning web component and wants to use the existing getOpportunities() method to provide data.

  What to do now?

  A. The method must be decorated with (cacheable=true).
  B. The method must be decorated with @AuraEnabied.
  C. The method must return a JSON Object.
  D. The method must return a String of a serialized JSON Array.
  A. The method must be decorated with (cacheable=true).

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  Explanation

• Question 79:

  A developer needs to have records with specific field values in order to test a new Apex class.

  What should the developer do to ensure the data is available to the test?

  A. Use SOQL to query the org for the required data.
  B. Use Test.loadData() and reference a CSV file in a static resource.
  C. Use Anonymous Apex to create the required data.
  D. Use Test. loadData() and reference a JSON file in Documents.
  B. Use Test.loadData() and reference a CSV file in a static resource.

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  Explanation

  Why Test.loadData() ?

  Simplifies test data creation by loading data from a CSV file stored as a static resource.

  Ideal for testing specific field values in bulk.

  Why Not Other Options?

  A: Querying data from the org violates test isolation principles.

  C: Anonymous Apex cannot be used within test classes.

  D: JSON files in Documents are not supported by Test.loadData().

  Test.loadData(): https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_testing_tools_load_data.htm

• Question 80:

  A Salesforce administrator used Flow Builder to create a flow named "accountOnboarding". The flow must be used inside an Aura component.

  Which tag should a developer use to display the flow in the component?

  A. lightning: flow
  B. lightning-low
  C. sure-flow
  D. aura: flow
  A. lightning: flow

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  Explanation

  To embed a Flow in an Aura component, the lightning:flow tag is used. It allows developers to interact with flows declaratively in Aura components.