Salesforce PDI Online Practice Questions and Exam Preparation

Salesforce PDI Online Questions & Answers

• Question 171:

  A developer creates a Lightning web component that imports a method within an Apex class. When a Validate button is pressed, the method runs to execute complex validations.

  In this implementation scenario, which two options are.. of the Controller according to the MVC architecture? Choose 2 answers

  A. HTML file
  B. Apex class
  C. JavaScript file
  D. XML file
  B. Apex class
  C. JavaScript file

  ---

  Explanation

  In the context of the MVC (Model-View-Controller) architecture for a Lightning Web Component (LWC), the Apex class and JavaScript file are responsible for handling the controller's role:

  Apex Class (Controller):

  Acts as the server-side controller.

  Executes business logic, such as the complex validations mentioned in the scenario.

  Exposes methods for the LWC to call using @AuraEnabled.

• Question 172:

  Which scenario is valid for execution by unit tests?

  A. Execute anonymous Apex as a different user.
  B. Generate a Visualforce PDF with getcontentaAsPDF ().
  C. Load data from a remote site with a callout.
  D. Set the created date of a record using a system method.
  B. Generate a Visualforce PDF with getcontentaAsPDF ().

  ---

  Explanation

  Unit Test Scenarios:

  Option B is valid because getContentAsPDF() can generate PDF content for testing purposes.

  Why Not Other Options?

  A: Unit tests cannot execute anonymous Apex as a different user.

  C: Unit tests cannot perform callouts unless mock responses are provided.

  D: The System.createdDate field cannot be set manually in unit tests.

  Testing Best Practices: https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode /apex_testing_best_practices.htm

• Question 173:

  Which two settings must be defined In order to update a record of a junction object? Choose 2 answers

  A. Read/Write access on the secondary relationship
  B. Read/Write access on the primary relationship
  C. Read/Write access on the junction object
  D. Read access on the primary relationship
  B. Read/Write access on the primary relationship
  C. Read/Write access on the junction object

  ---

  Explanation

  Option B: To update a junction object, the user needs Read/Write access to the primary relationship object.

  Option C: The user must also have Read/Write access on the junction object itself.

• Question 174:

  Which three Salesforce resources can be accessed from a Lightning web component? Choose 3 answers

  A. Static resources
  B. All external libraries
  C. SVG resources
  D. Third-party web components
  E. Content asset files
  A. Static resources
  C. SVG resources
  E. Content asset files

  ---

  Explanation

  Lightning Web Components (LWCs) have access to a variety of resources in Salesforce. Below are the supported resources:

  Static Resources (A):You can use static resources to reference JavaScript libraries, images, and other files needed in an LWC.

• Question 175:

  Einstein Next Best Action Is configured at Universal Containers to display recommendations to internal users on the Account detail page.

  If the recommendation is approved, a new opportunity record and task should be generated. If the recommendation is rejected, an Apex method must be executed to perform a callout to an external system.

  Which three factors should a developer keep Hi mind when implementing the Apex method? Choose 3 answers

  A. The method must use the @AuraEnabled annotation.
  B. The method must use the @Future annotation.
  C. The method must use the @invocableMethod annotation.
  D. The method must be defined as static.
  E. The method must be defined as public.
  B. The method must use the @Future annotation.
  D. The method must be defined as static.
  E. The method must be defined as public.

  ---

  Explanation

• Question 176:

  Which code statement includes an Apex method named updateAccounts in the class AccountController for use in a Lightning web component?

  A. import updateAccounts from "AccountControlles';
  B. import updateAccounts from "Salesforce/apex/AccountController:';
  C. import updateAccounts from "[email protected]';
  D. import updateAccounts from "@salesforce/apex/AccountController.updateAccounts";
  D. import updateAccounts from "@salesforce/apex/AccountController.updateAccounts";

  ---

  Explanation

  When working with a Lightning Web Component (LWC), the correct syntax for importing an Apex method is:import methodName from "@salesforce/apex/ControllerName.methodName";.

  Why not other options?

  A, B, and C: These use incorrect syntax for importing Apex methods in LWCs.

  References: Lightning Web Components Documentation

• Question 177:

  A developer is designing a many-to-many relationship between two custom objects.

  What is required to implement this relationship?

  A. Two lookup relationships
  B. A junction object with two master-detail relationships
  C. A formula field on each object
  D. A roll-up summary field
  B. A junction object with two master-detail relationships

  ---

  Explanation

  In Salesforce, many-to-many relationships are implemented using a junction object. This junction object contains two master-detail relationships, each pointing to one of the related objects. This design allows each record from either object to be associated with multiple records from the other object. The master-detail relationships also enable roll-up summary fields and enforce referential integrity. Lookup relationships alone do not fully support many-to-many behavior, and formula fields or roll-up summaries do not establish relationships between records.

• Question 178:

  A PrimaryId__c custom field exists on the Candidate__c custom object. The field is used to store each candidate's ID number and is marked as Unique in the schema definition.

  As part of a data enrichment process, Universal Containers has a CSV file that contains updated data for all candidates in the system. The file includes each candidate's PrimaryId__c value as a data point. Universal Containers wants to upload this information into Salesforce while ensuring that all data rows are correctly mapped to the corresponding Candidate__c records in the system.

  Which technique should the developer implement to streamline the data upload?

  A. Upload the CSV into-a custom object related to candidate__c.
  B. Create a before insert trigger to correctly map the records,
  C. Update the Primarytd_c field definition to mark it. as.an External Id.
  D. Create a before save flow to correctly map the records.
  C. Update the Primarytd_c field definition to mark it. as.an External Id.

  ---

  Explanation

  C. Update the PrimaryId__c field definition to mark it as an External Id:

  Marking PrimaryId__c as an External Id allows Salesforce to use this field to match records during the data import process, streamlining the process of mapping CSV rows to existing Candidate__c records.

  External Id fields are indexed and can be used in tools like Data Loader Data Import Wizard , , or API-based upserts to ensure that records are matched correctly based on the value of the external ID field.

  In this case, since PrimaryId__c is unique, marking it as an external ID eliminates the need for custom triggers or flows.

  Why this is the best solution?

  This technique leverages built-in Salesforce capabilities (no need for custom code or automation).

  It ensures accurate record matching and is the standard approach for data enrichment tasks involving unique identifiers.

  Why not the other options?

  A. Upload the CSV into a custom object related to Candidate__c:

  This approach unnecessarily introduces another object, adding complexity. The goal is to update existing Candidate__c records, not store the data in a separate object.

  B. Create a before insert trigger to correctly map the records:

  Using triggers for this purpose is overengineering. Salesforce already provides tools like upsert for this exact use case. Writing a trigger would require additional effort and could introduce unintended errors or performance issues.

  D. Create a before save flow to correctly map the records:

  While flows are powerful, they are not the optimal solution for this use case. Data mapping is better handled using an external ID during import to ensure proper matching and updates.

  References:

  External IDs in Salesforce Upsert with Data Loader Unique and External ID Fields

• Question 179:

  Which two are phases in the Aura application event propagation framework? Choose 2 answers

  A. Control
  B. default
  C. Buddle
  D. Emit
  B. default
  C. Buddle

  ---

  Explanation

  Event Propagation Phases in Aura Framework:

  Default Phase: The framework executes handlers with event.setDefault().

  Bubble Phase: The event propagates upward from the target component to the root component.

  Why Not Other Options?

  A. Control: Not a valid Aura event propagation phase.

  D. Emit: This is part of event creation, not propagation.

  Aura Event Propagation: https://developer.salesforce.com/docs/atlas.en-us.lightning.meta/lightning/events_application.htm

• Question 180:

  A developer wants to retrieve records efficiently when the data volume is very large.

  Which feature should be used?

  A. Standard SOQL
  B. Dynamic SOQL
  C. Batch Apex
  D. Execute Anonymous
  C. Batch Apex

  ---

  Explanation

  Batch Apex is designed specifically for processing large data volumes that exceed synchronous governor limits. It breaks the overall workload into smaller chunks, each processed in its own transaction with separate governor limits. This allows developers to safely process millions of records without hitting limits such as total rows retrieved or CPU time. Standard and dynamic SOQL are subject to synchronous limits, and Execute Anonymous is intended for ad hoc execution rather than large-scale processing.