Free Salesforce DEX-450 Questions and AnswersSalesforce DEX-450 | SPOTO

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Question #1

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?

A. Declare maxattempts as a member variable on the trigger definition

B. Declare maxattempts as a private static variable on a helper class

C. Declare maxattempts as a constant using the static and final keywords

D. Declare maxattempts as a variable on a helper class

View answer

Correct Answer: C

Question #2

Why would a developer use Test. startTest( ) and Test.stopTest( )?

A. To avoid Apex code coverage requirements for the code between these lines

B. To start and stop anonymous block execution when executing anonymous Apex code

C. To indicate test code so that it does not Impact Apex line count governor limits

D. To create an additional set of governor limits during the execution of a single test class

View answer

Correct Answer: D

Question #3

Which Salesforce feature allows a developer to see when a user last logged in to Salesforce if real-time notification is not required?

A. Asynchronous Data Capture Events

B. Developer Log

C. Event Monitoring Log

D. Calendar Events

View answer

Correct Answer: C

Question #4

How can a developer determine, from the DescribeSObjectResult, if the current user will be able to create records for an object in Apex?

A. By using the isInsertable() method

B. By using the isCreatable() method

C. By using the hasAccess() method

D. By using the canCreate() method

View answer

Correct Answer: B

Question #5

Which statement generates a list of Leads and Contacts that have a field with the phrase 'ACME'?

A. ListsearchList = (FIND "*ACME*" IN ALL FIELDS RETURNING Contact, Lead);

B. List> searchList = (FIND "*ACME*" IN ALL FIELDS RETURNING Contact, Lead);

C. MapsearchList = (FIND "*ACME*" IN ALL FIELDS RETURNING Contact, Lead);

D. List> searchList = (SELECT Name, ID FROM Contact, Lead WHERE Name like '% ACME%');

View answer

Correct Answer: B

Question #6

Which two statements are true regarding formula fields? Choose 2 answers

A. When using the and operator to concatenate strings, the result is automatically truncated to fit the destination

B. Fields that are referenced by formula field can not be deleted until the formula is modified or deleted

C. When concatenating fields, line breaks can be added to improve readability

D. Formula fields may reference formula field on the same object to a level of one deep

View answer

Correct Answer: BD

Question #7

How can a developer retrieve all Opportunity record type labels to populate a list collection? Choose 2 answers

A. Obtain describe object results for the Opportunity objct

B. Write a for loop that extracts values from the Opportunity

C. Use the global variable $RecordType and extract a list from the map

D. Write a SOQL for loop that iterates on the RecordType object

View answer

Correct Answer: AD

Question #8

Universal Containers wants Opportunities to no longer be editable when it reaches the Closed/Won stage. Which two strategies can a developer use to accomplish this? Choose 2 answers

A. Use a validation rule

B. Use an auto-response rule

C. Use a before-save Apex trigger,correct

D. Use an automatically launched Approval Process

View answer

Correct Answer: AC

Question #9

Universal Containers requires Service Representatives to update all Cases at least one every three days. To make sure of this policy is obeyed, a developer has been asked to implement a field that displays the number of days since the last Case update. What should the developer use to configure the solution?

A. Formula field

B. Workflow rule

C. Process Builder

D. Scheduled Apex Class

View answer

Correct Answer: A

Question #10

A developer is tasked with building a custom Lightning web component to collect Contact information. The form will be shared among many different types of users in the org. There are security requirements that only certain fields should be edited and viewed by certain groups of users. What should the developer use in their Lightning Web Component to support the security requirements?

A. aura-input-failed

B. force-input-failedcorrect

C. ui-input-failed

D. lightning-input-failed

View answer

Correct Answer: B

Question #11

A developer wants to import 500 Opportunity records into a sandbox. Why should the developer choose to use data Loader instead of Data Import Wizard?

A. Data Loader runs from the developer's browser

B. Data Import Wizard does not support Opportunities

C. Data Loader automatically relates Opportunities to Accounts

D. Data Import Wizard can not import all 500 records

View answer

Correct Answer: B

Question #12

What are two use cases for executing Anonymous Apex code? Choose 2 answers

A. schedule an Apex class to run periodicallycorrect

B. To delete 15,000 inactive Accounts in a single transaction after a deployment

C. To run a batch Apex class to update all Contactscorrect

D. To add unit test code coverage to an org

View answer

Correct Answer: AC

Question #13

What is true for a partial sandbox that is not true for a full sandbox? Choose 2 answers:

A. More frequent refreshes

B. Only Includes necessary metadata

C. Use of change sets

D. Limited to 5 GB of data

View answer

Correct Answer: AD

Question #14

A developer wants to import 500 Opportunity records into a sandbox. Why should the developer choose to use Data Loader instead of Data Import Wizard?

A. Data Import Wizard does not support Opportunities

B. Data Loader automatically relates Opportunities to Accounts

C. Data Loader runs from the developer's browser,

D. Data Import Wizard can not import all 500 records

View answer

Correct Answer: A

Question #15

A custom object Trainer_ < has a lookup field to another custom object cym__ c. Which SOQL query will get the record for the Viridian City Gym and all it's trainers?

A. SELECT Id; (SELECT Id FROM Trainers_r) FROM Gym_ _c WHERE Name = 'Viridian City Gym'correct

B. SELECT Id, (SELECT Id FROM Trainer_c) FROM Gym__c WHERE Name = 'Viridian City Gym'

C. SELECT ID FROM Trainer ￠ WHERE Gym__r

D. SELECT Id, (SELECT Id FROM Trainers_c) FROM Gym_c WHERE Name - 'Viridian City Gym’'

View answer

Correct Answer: A

Question #16

The following Apex method is part of the ContactService class that is called from a trigger: public static void setBusinessUnitToEMEA(Contact thisContact) { thisContact.Business_Unit_c = "EMEA”; update thisContact; } How should the developer modify the code to ensure best practices are met? A) B) C) D)

A. Option Acorrect

B. Option B

C. Option C

D. Option D

View answer

Correct Answer: A

Question #17

A developer runs the following anonymous code block:Listacc = [SELECT Id FROM Account LIMIT 10];Delete acc;Database.emptyRecycleBin (acc);system.debug(Limits.getDMLStatements()+ `, ` +Limits.getLimitDMLStatements());What is the result?

A. 11, 150

B. 150, 2

C. 150, 11

D. 2, 150

View answer

Correct Answer: D

Question #18

How does the Lightning Component framework help developers implement solutions faster?

A. By providing device-awareness for mobile and desktopscorrect

B. By providing an Agile process with default steps

C. By providing change history and version control

D. By providing code review standards and processes

View answer

Correct Answer: A

Question #19

A developer wants to handle the click event for a lightning:button componentthe onclick attribute for the component references a javascript function in which resource in the component bundle?

A. Helper

B. Handler

C. Renderer

D. Controller

View answer

Correct Answer: D

Question #20

What is the proper process for an Apex Unit Test

A. Query for test data using SeeAllData = true

B. Query for test data using SeeAllData = true

C. Create data for testing

D. Create data for testing

View answer

Correct Answer: D

Question #21

The initial value for a number field on a record is 1. A user updated the value of the number field to 10. This action invokes a workflow field update, which changes the value of the number field to 11. After the workflow field update, an update trigger fires.What is the value of the number field of the object that is obtained from Trigger.old?

A. Null

B. 11

C. 1

D. 10

View answer

Correct Answer: C

Question #22

What is the data type returned by the following SOSL search? {FIND 'Acme*' in name fields returning account,opportunity};

A. List,List

B. Map

C. Map

D. List>

View answer

Correct Answer: D

Question #23

A developer created a Lightning web component called status component to be Inserted into the Account record page. Which two things should the developer do to make this component available? Choose 2 answers

A. Add lightning_Recordpage to the statuscomponent

B. Add lightning RecordPage to the statusComp

C. Set is Exposes to true In the statuscomponent

D. Add Account to the statusComponent

View answer

Correct Answer: ABD

Question #24

What is a capability of formula fields? (Choose 3)

A. Generate a link using the HYPERLINK function to a specific record in a legacy system

B. Display the previous values for a field using the PRIORVALUE function

C. Return and display a field value from another object using the VLOOKUP function

D. Determine if a datetime field has passed using the NOW function

E. Determine which of three different images to display using the IF function

View answer

Correct Answer: ADE

Question #25

While working in a sandbox, an Apex test fails when run in the Test Runner. However, executing the Apex logic in the Execute Anonymous window succeeds with no exceptions or errors. Why did the method fail in the sandbox test framework but succeed in the Developer Console?

A. The test method is calling an @future method

B. The test method relies on existing data in the sandbox

C. The test method has a syntax error in the code

D. The test method does not use Sysetem

View answer

Correct Answer: B

Question #26

Universal Containers (UC) wants to lower its shipping cost while making the shipping process more efficient. The Distribution Officer advises UC to implement global addresses to allow multiple Accounts to share a default pickup address. The developer is tasked to create the supporting object and relationship for this business requirement and uses the Setup Menu to create a custom object called "Global Address". Which field should the developer add to create the most efficient model that supports the busines

A. Add a master-detail field on the Global Address object to the Account object

B. Add a lookup field on the Global Address object to the Account object

C. Add a lookup field on the Account object to the Global Address object

D. Add a master-detail field on the Account object to the Global Address object

View answer

Correct Answer: D

Question #27

A developer uses a before insert trigger on the Lead object to fetch the Territory__c object, where the Territory__c.PostalCode__c matches the Lead.PostalCode. The code fails when the developer uses the Apex Data Loader to insert 10,000 Lead records. The developer has the following code block: Line-01: for (Lead l : Trigger.new){Line-02: if (l.PostalCode != null) {Line-03: ListterrList = [SELECT Id FROM Territory__c WHERE PostalCode__c = :l.PostalCode];Line-04: if(terrList.size() > 0) Line-05: l.Territory__

A. Line-03: A SOQL query is located inside of the for loop code

B. Line-01: Trigger:new is not valid in a before insert Trigger

C. Line-02: A NullPointer exception is thrown if PostalCode is null

D. Line-05: The Lead in a before insert trigger cannot be updated

View answer

Correct Answer: A

Question #28

What is an accurate statement about variable scope? (Choose 3)

A. Parallel blocks can use the same variable name

B. A variable can be defined at any point in a block

C. Sub-blocks cannot reuse a parent block's variable name

D. Sub-blocks can reuse a parent block's variable name if it's value is null

E. A static variable can restrict the scope to the current block of its value is null

View answer

Correct Answer: ABC

Question #29

The following code snippet is executed by a Lightning web component in an environment with more than 2,000 lead records: Which governor limit will likely be exceeded within the Apex transaction?

A. Total number of SOOL quires issued

B. Total number of DML statements issued

C. Total number of records processed as a result of DML statementscorrect

View answer

Correct Answer: C

Question #30

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 discussion, the UC administrator tried to change the Master-Detail relationship to a Lookup relationship but was not able todo so. What is apossible reason that this change was not permitted?

A. The Account records contain Vendor roll-up summary fields

B. The Vendor object must use a Master-Detail field for reporting

C. The Vendor records have existing values in the Account object

D. The Account object is included on a workflow on the Vendor object

View answer

Correct Answer: A

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