Programmatic Development using Apex and Visualforce in Lightning Experience (DEX-450) Free Practice Test

Question 1

A developer wants to send an outbound message when a record meets a specific criteria.
Which two features satisfy this use case?

A. Flow Builder can be used to check the record criteria and send an outbound message.

B. Entitlement Process can be used to check the record criteria and send an outbound message without Apex code.

C. Approval Process can be used to check the record criteria and send an outbound message without Apex code.

D. Next Best Action can be used to check the record criteria and send an outbound message.

Correct Answer: B,C

Question 2

Where are two locations a developer can look to find information about the status of batch or future methods?
Choose 2 answers

A. Developer Console

B. Apex Jobs

C. Apex Flex Queue

D. Paused Flow Interviews component

Correct Answer: B

Question 3

Which two operations affect the number of times a trigger can fire?
Choose 2 answers

A. Roll-up summary fields

B. After-save record-triggered flow

C. Criteria-based sharing calculations

D. Email messages

Correct Answer: A,B

Question 4

What are two benefits of using External IDs?
Choose 2 answers

A. An External ID can be used with Salesforce Mobile to make external data visible.

B. An External 1D is indexed and can improve the performance of SOOL queries.

C. An External ID can be a formula field ta help create a unique key from two fields in Salesforce.

D. An External ID field can be used to reference an ID from another external system.

Correct Answer: B,D

Question 5

Universal Containers is building a recruiting app with an Applicant object that stores information about an individual person and a Job object that represents a job. Each applicant may apply for more than one job.
What should a developer implement to represent that an applicant has applied for a job?

A. Master-detail field from Applicant to Job

B. Junction object between Applicant and Job

C. Formula field on Applicant that references Job

D. Lookup field from Applicant to Job

Correct Answer: B

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Question 6

Which Apex class contains methods to return the amount of resources that have been used for a particular governor, such as the number of DML statements?

A. Limits

B. OrgLimits

C. Exception

D. Messaging

Correct Answer: A

Question 7

A developer creates a new Apex trigger with a helper class, and writes a test class that only exercises 95% coverage of the new Apex helper class.
Change Set deployment to production fails with the test coverage warning:
"Test coverage of selected Apex Trigger is 0%, at least 1% test coverage is required." What should the developer do to successfully deploy the new Apex trigger and helper class?

A. Create a test class and methods to cover the Apex trigger.

B. Increase the test class coverage on the helper class.

C. Remove the failing test methods from the test class

D. Run the tests using the Run All Tests' method.

Correct Answer: A

Question 8

What should a developer use to fix a Lightning web component bug in a sandbox?

A. Developer Console

B. Execute Anonymous

C. VS Code

D. Force.com IDE

Correct Answer: C

Question 9

Universal Containers has a large number of custom applications that were built using a third-party JavaScript framework and exposed using Visualforce pages. The company wants to update these applications to apply styling that resembles the look and feel of Lightning Experience.
What should the developer do to fulfill the business request in the quickest and most effective manner?

A. Rewrite all Visualforce pages as Lightning components.

B. Set the attribute enableLightning to true in the definition.

C. Enable Available for Lightning Experience, Lightning Communities, and the mobile app on Visualforce pages used by the custom application.

D. Incorporate the Salesforce Lightning Design System CSS stylesheet Into the JavaScript applications.

Correct Answer: D

Question 10

A developer needs to create a baseline set of data (Accounts, Contacts, Products, Assets) for an entire suite of Apex tests allowing them to test isolated requirements for various types of Salesforce cases.
Which approach can efficiently generate the required data for each unit test?

A. Create test data before Test .startTest() in the unit test.

B. Add @IsTest (seeAllData=true) at the start of the unit test class.

C. Use @TestSetup with a void method.

D. Create a mock using the HttpcalloutMock interface.

Correct Answer: C

Question 11

Cloud Kicks Fitness, an ISV Salesforce partner, is developing a managed package application. One of the application modules allows the user to calculate body fat using the Apex class, Bodyfat, and its method, calculateBodyFat (). The product owner wants to ensure this method is accessible by the consumer of the application when developing customizations outside the ISV's package namespace.
Which approach should a developer take to ensure calculateBodyFat () is accessible outside the package namespace?

A. Declare the class as global and use the public access modifier on the method.

B. Declare the class as public and use the global access modifier on the method.

C. Declare the class and method using the global access modifier.

D. Declare the class and method using the public access modifier.

Correct Answer: C

Question 12

Consider the following code snippet for a Visualforce page that is launched using a Custom Button on the Account detail page layout.

When the Save button is pressed the developer must perform a complex validation that involves multiple objects and, upon success, redirect the user to another Visualforce page.
What can the developer use to meet this business requirement?

A. Apex

B. trigger

C. extension

D. Controller

Correct Answer: B

Question 13

An org has an existing flow that edits an Opportunity with an Update Records element. A developer must update the flow to also create a Contact and store the created Contact's ID on the Opportunity.
Which update must the developer make in the flow?

A. Add a new Create Records element.

B. Add a new Update Records element.

C. Add a new Roll Back Records element.

D. Add a new Get Records element.

Correct Answer: A

Question 14

Which annotation should a developer use on an Apex method to make it available to be wired to a property in a Lightning web component?

A. @RemoteAction (cacheable-true)

B. @RemoteAction

C. @AuraEnabled

D. @AuraEnabled(cacneable=true)

Correct Answer: D

Question 15

A Primaryld_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 contains each Candidate's primary .. as a data point. Universal Containers wants to upload this information into Salesforce, while ensuring all data rows are correctly mapped to a candidate in the system.
Which technique should the developer implement to streamline the data upload?

A. Create a before insert trigger to correctly map the records,

B. Upload the CSV into-a custom object related to candidate__c.

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.

Correct Answer: C

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Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience (DEX-450) Free Practice Test