Verified DEX-450 Q&As - Pass Guarantee DEX-450 Exam Dumps [Q130-Q152] : Actual Test Materials : http://blog.actualtests4sure.com

QUESTION 130
Which action may cause triggers to fire?

Updates to Feed Items

Renaming or replacing a picklist entry

Changing a user’s default division when the transfer division option is checked

Cascading delete operations

QUESTION 131
When would a developer use a custom controller instead of a controller extension? Choose 2 answers:

When a Visualforce page needs to replace the functionality of a standard controller.

When a Visualforce page does not reference a single primary object.

When a Visualforce page should not enforce permissions or field-level security.

When a Visualforce page needs to add new actions to a standard controller.

QUESTION 132
Universal Containers (UC) uses a custom object called Vendor. The Vendor custom object has a master-detail relationship with the standard Account object.
Based on some internal discussions, the UC administrator tried to change the master-detail relationship to a lookup relationship, but was not able to do so.
What is a possible reason that this change was not permitted?

The Account object does not allow changing a field type for a custom field.

The organization wide default for the Vendor object is Public Read/Write.

The Account object has a roll-up summary field on the Vendor object.

Some of the Vendor records have null for the Account field.

QUESTION 133
A developer wants to handle the click event for a lightning:button component. The on click attribute for the component references a JavaScript function in which resource in the component bundle?

Helper.js

Handler.js

Controller.js

Renderer.js

QUESTION 134
What should a developer do to check the code coverage of a class after running all tests?

View the Code Coverage column in the list view on the Apex Classes page.

View the Class Test Percentage tab on the Apex Class fist view m Salesforce Setup.

View Use cede coverage percentage for the class using the Overall Code Coverage panel in the Developer Console Tests tab.

Select and run the class on the Apex Test Execution page in the Developer Console.

QUESTION 135
A developer is asked to set a picklist field to ‘Monitor’ on any new Leads owned by a subnet of Users.
How should the developer implement this request?

Create an after insert Lead trigger.

Create a before insert Lead trigger.

Create a Lead Workflow Rule Field Update.

Create a Lead formula field.

QUESTION 136
A developer created a trigger on the Account object and wants to test if the trigger is properly bulklfield. The developer team decided that the trigger should be tested with 200 account records with unique names.
What two things should be done to create the test data within the unit test with the least amount of code? Choose 2 answers A developer created a trigger on the Account object and wants to test if the trigger is properly bulklfield. The developer team decided that the trigger should be tested with 200 account records with unique names.
What two things should be done to create the test data within the unit test with the least amount of code?
Choose 2 answers

Use the @isTest(isParallel=true) annotation in the test class.

Use Test.loadData to populate data in your test methods.

Use the @isTest(seeAllData=true) annotation in the test class.

Create a static resource containing test data.

QUESTION 137
The Job_Application__c custom object has a field that is a Master-Detail relationship to the Contact object, where the Contact object is the Master. As part of a feature implementation, a developer needs to retrieve a list containing all Contact records where the related Account Industry is ‘Technology’ while also retrieving the contact’s Job_Application__c records.
Based on the object’s relationships, what is the most efficient statement to retrieve the list of contacts?

[SELECT Id, (SELECT Id FROM Job_Applications_r) FROM Contact WHERE
Account.Industry = ‘Technology’];

[SELECT Id, (SELECT Id FROM Job_Applications_r) FROM Contact WHERE
Accounts.Industry = ‘Technology’];

[SELECT Id, (SELECT Id FROM Job_Applications_c) FROM Contact WHERE
Accounts.Industry = ‘Technology’];

[SELECT Id, (SELECT Id FROM Job_Application_c) FROM Contact WHERE
Account.Industry = ‘Technology’];

QUESTION 138
What is true of a partial sandbox that is not true of a full sandbox? Choose 2 answers

More frequent refreshes

Limited to 5 GB of data

Use of change sets

Only includes necessary meta data

QUESTION 139
A Visual Flow uses an apex Action to provide additional information about multiple Contacts, stored in a custom class, contactInfo. Which is the correct definition of the Apex method that gets additional information?

@InvocableMethod(label=’Additional Info’)
public List<ContactInfo> getInfo(List<Id> contactIds)
{ /*implementation*/ }

@InvocableMethod(label=’additional Info’)
public static ContactInfo getInfo(Id contactId)
{ /*implementation*/ }

@invocableMethod(label)=’Additional Info’)
public static List<ContactInfo> getInfo(List<Id> contactIds)
{ /*Implementation*/ }

@InvocableMethod(Label=’additional Info’)
public ContactInfo(Id contactId)
{ /*implementation*/ }

QUESTION 140
A developer encounters APEX heap limit errors in a trigger.
Which two methods should the developer use to avoid this error? (Choose two.)

Use the transient keyword when declaring variables.

Query and store fields from the related object in a collection when updating related objects.

Remove or set collections to null after use.

Use SOQL for loops instead of assigning large queries results to a single collection and looping through the collection.

QUESTION 141
A developer wants to list all of the Tasks for each Account on the Account detail page. When a task is created for a Contact, what does the developer need to do to display the Task on the related Account record?

Nothing. The task is automatically displayed on the Account page.

Nothing. The Task cannot be related to an Account and a Contact.

Create a Workflow rule to relate the Task to the Contact’s Account.

Create an Account formula field that displays the Task information.

QUESTION 142
A developer must create an Apex class, contactcontroller, that a Lightning component can use to search for Contact records. User of the Lightning component should only be able to search Contact records to which they have access. Which two will restrict the records correctly?

public class ContactController

public with sharing class ContactController

public without sharing class ContactController

public inherited sharing class ContactController

QUESTION 143
A developer must create a lightning component that allows users to input contact record information to create a contact record, including a salary__c custom field. what should the developer use, along with a lightning-record-edit form, so that salary__c field functions as a currency input and is only viewable and editable by users that have the correct field levelpermissions on salary__C?

<ligthning-input-field field-name=”Salary__c”>
</lightning-input-field>

<lightning-formatted-number value=”Salary__c” format-style=”currency”>
</lightning-formatted-number>

<lightning-input type=”number” value=”Salary__c” formatter=”currency”>
</lightning-input>

<lightning-input-currency value=”Salary__c”>
</lightning-input-currency>

QUESTION 144
Which two number expression evaluate correctly? Choose 2 answers

Integer I = 3.14159;

Decimal D = 3.14159;

Long I = 3.14159;

Double D =3.14159;

QUESTION 145
A developer needs to apply the look and feel of lightning experience to a number of applications built using a custom third-party javascript framework and rendered in visualforce pages which option achieves this?

Set the attribute enablelightning to “true” in the definition

Replace the third-party javascript library with native visualforce tags

Configure the user interface options in the setup menu to enable legacy mode for visualforce

Incorporate salesforce lightning design system css style sheets into the javascript applications

QUESTION 146
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?

Use Anonymous Apex to create the required data.

Use Test.loadDataO < > and reference a CSV file in a static resource.

Use SOQL to query the org for the required data.

Use Test.loadDataO and reference a JSON file in Documents.

QUESTION 147
A developer has a unit test that is failing. To identify the issue, the developer copies the code inside the test method and executes it via the Execute Anonymous Apex Tool. The code then executes without failing. Why did the unit test failed, but not the Execute Anonymous?

The test method has a syntax error in the code.

The test method relies on existing data in the database

The test method use a try/catch block

The test method calls an @future method.

QUESTION 148
A developer writes the following code:

What is the result of the debug statement?

1, 100

1, 150

2, 150

2, 200

QUESTION 149
A developer has an integer variable called maxAttempts. The developer meeds to ensure that once maxAttempts is initialized, it preserves its value for the lenght of the Apex transaction; while being able to share the variable’s state between trigger executions. How should the developer declare maxAttempts to meet these requirements?

Declare maxattempts as a member variable on the trigger definition.

Declare maxattempts as a private static variable on a helper class

Declare maxattempts as a constant using the static and final keywords

Declare maxattempts as a variable on a helper class

QUESTION 150
A developer has a Visualforce page and custom controller to save Account records. The developer wants to display any validation rule violation to the user. How can the developer make sure that validation rule violations are displayed?

Add cuatom controller attributes to display the message.

Include <apex:message> on the Visualforce page.

Use a try/catch with a custom exception class.

Perform the DML using the Database.upsert() method.

QUESTION 151
How can a developer check the test coverage of active Process Builder and Flows deploying them in a Changing Set?

Use the Flow properties page.

Use the code Coverage Setup page

Use the Apex testresult class

Use SOQL and the Tooling API

QUESTION 152
Since Aura application events follow the traditional publish-subscribe model, which method is used to fire an event?

ernit()

fireEvent()

fire()

registerEvent()

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