Nov-2023 Salesforce DEX-450 Actual Questions and 100% Cover Real Exam Questions
DEX-450 Free Exam Questions and Answers PDF Updated on Nov-2023
Salesforce DEX-450 exam is a comprehensive certification that covers a wide range of programmatic development skills. It is ideal for developers who want to demonstrate their expertise in building custom applications and integrations on the Salesforce platform using Apex, Visualforce, and Lightning Components. Passing DEX-450 exam is a great way to showcase your skills and advance your career as a Salesforce developer.
NEW QUESTION # 63
The account object has a custom percent field, rating, defined with a length of 2 with 0 decimal places. An account record has the value of 50% in its rating field and is processed in the apex code below after being retrieved from the database with SOQL public void processaccount(){ decimal acctscore = acc.rating__c * 100; } what is the value of acctscore after this code executes?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION # 64
Universal Containers has 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. Set the attribute enableLightning to true in the definition.
- B. Enable Available for Lightning Experience, Lightning Communities, and the mobile app on Visualforce pages used by the custom application.
- C. Incorporate the Salesforce Lightning Design System CSS stylesheet into the JavaScript applications.
- D. Rewrite all Visualforce pages asLightning components.
Answer: C
NEW QUESTION # 65
Universal Hiring is using Salesforce to capture job applications. A salesforce administrator created two custom objects; Job c acting as the master object, Job application.__: acting as the detail.
What is the recommended tool a developer should use to meet the business requirement?
- A. Process Builder
- B. Record-triggered flow
- C. Apex trigger
- D. Formula field
Answer: D
NEW QUESTION # 66
A Next Best Action strategy uses an Enhance Element that invokes an Apex method to determine a discount level for a Contact, based on a number of factors. What is the correct definition of the Apex method?
- A. @InvocableMethod
global static ListRecommendation getLevel(List<Contactwrapper> input)
{ /*implementation*/ } - B. @InvocableMethod
global List<List<Recommendation>> getlevel(List<COntactWrapper> input)
{ /*implementation */ } - C. @InvocableMethod
global static List<List<Recommendation>> getLevel (List<ContactWrapper> input)
{ /*implementation */ } - D. @InvocableMethod
global Recommendation getlevel(ContactWrapper input)
{ /*implementation */ }
Answer: C
NEW QUESTION # 67
A developer wants to display all of the available record types for a Case object. The developer also wants to display the picklist values for the Case.Status field. The Case object and the Case.Status field are on a custom Visualforce page. Which action can the developer perform to get the record types and picklist values in the controller? (Choose 2)
- A. Use Schema.RecordTypeInfo returned by Case.sObjectType.getDescribe().getRecordTypeInfos().
- B. Use Schema.PicklistEntry returned by Case.Status.getDescribe().getPicklistValues().
- C. Use SOQL to query case records in the org to get all values for the Status picklist field.
- D. Use SOQL to query Case records in the org to get all the RecordType values available for Case.
Answer: A,B
NEW QUESTION # 68
How can a developer set up a debug log on a specific user?
- A. Ask the user for access to their account credentials, log in as the user and debug the issue.
- B. Create Apex code that logs code actions into a custom object.
- C. Set up a trace flag for the user, and define a logging level and time period for the trace.
- D. It is not possible to setup debug logs for users other than yourself.
Answer: C
NEW QUESTION # 69
A developer is creating an application to track engines and their parts. An individual part can be used in different types of engines. What data model should be used to track the data and to prevent orphan records?
- A. Create a master-detail relationship to represent the one-to-many model of engines to parts.
- B. Create a junction object to relate many engines to many parts through a master-detail relationship
- C. Create a lookup relationship to represent how each part relates to the parent engine object.
- D. Create a junction object to relate many engines to many parts through a lookup relationship
Answer: B
NEW QUESTION # 70
In which two trigger types can a developer modify the new sObject records that are obtained by the trigger.new context? Choose 2 answers
- A. Before update
- B. After insert
- C. After update
- D. Before insert
Answer: A,D
NEW QUESTION # 71
Which component is available to deploy using Metadata API? Choose 2 answers
- A. Case Layout
- B. ConsoleLayout
- C. Case Feed Layout
- D. Account Layout
Answer: A,D
NEW QUESTION # 72
What are two uses for External IDs? (Choose two.)
- A. To create a record in a development environment with the same Salesforce ID as in another environment
- B. To identify the sObject type in Salesforce
- C. To prevent an import from creating duplicate records using Upsert
- D. To create relationships between records imported from an external system.
Answer: C,D
NEW QUESTION # 73
A developer must build application that tracks which Accounts have purchase specific pieces of equal products. Each Account could purchase many pieces of equipment.
How should the developer track that an Account has purchased a piece of equipment.
- A. Use the Asset object.
- B. Use a Custom object.
- C. Use a Master-Detail on Product to Account
- D. Use a Lookup on Account to product.
Answer: C
NEW QUESTION # 74
What are two characteristics related to formulas? Choose 2 answers.
- A. Formula can reference themselves.
- B. Formulas can reference values in related objects.
- C. Formulas are calculated at runtime and are not stored in the database.
- D. Fields that are used in a formula field can be deleted or edited without the formula.
Answer: B,C
NEW QUESTION # 75
A developer created a Visualforce page and a custom controller with methods to handle different buttons and events that can occur on the page.
What should the developer do to deploy to production?
- A. Create a test class that provides coverage of the Visualforce page.
- B. Create a test page that provides coverage of the custom controller.
- C. Create a test page that provides coverage of the Visualforce page.
- D. Create a test class that provides coverage of the custom controller.
Answer: D
NEW QUESTION # 76
A developer needs to create records for the object Property__c. The developer creates the following code block:List propertiesToCreate = helperClass.createProperties();try { // line 3 } catch (Exception exp ) { //exception handling }Which line of code would the developer insert at line 3 to ensure that at least some records are created, even if a few records have errors and fail to be created?
- A. Database.insert(propertiesToCreate, System.ALLOW_PARTIAL);
- B. insert propertiesToCreate;
- C. Database.insert(propertiesToCreate);
- D. Database.insert(propertiesToCreate, false);
Answer: D
NEW QUESTION # 77
Universal Containers has a support process that allows users to request support from its engineering team using a custom object, Engineering_Support__c.
Users should be able to associate multiple engineering_Support__c records to a single Opportunity record.
Additionally, aggregate Information about the Engineering_support__c records should be shown on the Opportunity record.
What should a developer Implement to support these requirements?
- A. Lookup field from Engineering_support__c to Opportunity
- B. Lookup field from Opportunity to Engineering_Support__c
- C. Master-detail field from Engineering_Support__c to Opportunity.
- D. Master-detail field from Opportunity to Engineering_Support__c
Answer: C
NEW QUESTION # 78
A developer needs to save a List of existing Account records named myAccounts to the database, but the records do not contain Salesforce Id values. Only the value of a custom text field configured as an External ID with an API name of Foreign_Key__c is known.
Which two statements enable the developer to save the records to the database without an Id? (Choose two.)
- A. Upsert myAccounts(Foreign_Key__c);
- B. Upsert myAccounts Foreign_Key__c;
- C. Database.upsert (myAccounts, Foreign_Key__c);
- D. Database.upsert(myAccounts).Foreign_Key__c;
Answer: B,C
NEW QUESTION # 79
How should a developer avoid hitting the governor limits in test methods?
- A. Use Test.startTest() to reset governor limits.
- B. Use @IsTest (SeeAllData=true) to use existing data.
- C. Use @TestVisible on methods that create records.
- D. Use Test.loadData() to load data from a static resource.
Answer: A
NEW QUESTION # 80
A developer observes that an Apex test method fails in the Sandbox. To identify the issue, the developer copies the code inside the test method and executes it via the Execute Anonymous tool in the Developer Console. The code then executes with no exceptions or errors. Why did the test method fail in the sandbox and pass in the Developer Console?
- A. The test method is calling an @future method.
- B. The test method does not use System.runAs to execute as a specific user.
- C. The test method has a syntax error in the code.
- D. The test method relies on existing data in the sandbox.
Answer: D
NEW QUESTION # 81
A developer has javascript code that needs to be called by controller functions in multiple components by extending a new abstract component. Which resource in the abstract component bundle allows the developer to achieve this
- A. Rendered.js
- B. Superrender.js
- C. Helper.js
- D. Controller.js
Answer: C
NEW QUESTION # 82
In order to override a standard action with a visualforce page, which attribute must be defined in the <apex:page> tag?
- A. Override
- B. Pagereference
- C. Controller
- D. Standardcontroller
Answer: D
NEW QUESTION # 83
A developer must modify the following code snippet to prevent the number of SOQL queries issued from exceeding the platform governor limit. public class without sharing OpportunityService( public static List<OpportunityLineItem> getOpportunityProducts(Set<Id> opportunityIds){ List<OpportunitylineItem> oppLineItems = new List<OpportunityLineItem>(); for(Id thisOppId : opportunityIds){ oppLineItems.addAll([Select Id FROM OpportunityLineItems WHERE OpportunityId = :thisOppId)]; } return oppLineItems; } } The above method might be called during a trigger execution via a Lightning component. Which technique should be implemented to avoid reaching the governor limit?
- A. Refactor the code above to perform only one SOQL query, filtering by the Set of opportunityIds.
- B. Refector the code above to perform the SOQL query only if the Set of opportunityIds contains less 100 Ids.
- C. Use the System.Limits.getlimitQueries() method to ensure the number of queries is less than 100.
- D. Use the System.Limits.getQueries() method to ensure the number of queries is less than 100.
Answer: D
NEW QUESTION # 84
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Earning the Salesforce DEX-450 certification can open up a world of opportunities for developers in the Salesforce ecosystem. With this certification, developers can demonstrate their ability to build custom applications that meet the unique needs of their clients and users. Additionally, developers with this certification are highly sought after by employers looking to build and maintain robust Salesforce applications.
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