DEX-450 Exam Questions Dumps, Selling Salesforce Products [Q62-Q85]

DEX-450 Exam Questions Dumps, Selling Salesforce Products

DEX-450 Cert Guide PDF 100% Cover Real Exam Questions

NEW QUESTION # 62
Which Apex collection is used to ensure that all values are unique?

• A. An sObject
• B. An Enum
• C. A Set
• D. A List

Answer: C

NEW QUESTION # 63
Application Events follow the traditional publish-subscribe model. Which method is used to fire an event?

• A. FireEvent()
• B. Fire()
• C. RegisterEvent()
• D. Emit()

Answer: B

NEW QUESTION # 64
How many Accounts will be inserted by the following block of code?

• A. 0
• B. 1
• C. 2
• D. 3

Answer: B

Explanation:
Additional Notes:
Governor Limits Enforcement:
Salesforce enforces governor limits to ensure efficient use of resources in a multi-tenant environment.
Exceeding limits results in a runtime exception (System.LimitException) that cannot be caught.
Exception Handling:
In this scenario, a System.LimitException is thrown, which cannot be handled by try-catch blocks.
Explanation:
Understanding the Code:
for (Integer i = 0 ; i < 500; i++) {
Account a = new Account (Name='New Account ' + i);
insert a;
}
What the Code Does:
Loops from i = 0 to i = 499 (total of 500 iterations).
In each iteration:
Creates a new Account record with the name 'New Account ' + i.
Performs an insert DML operation for each account.
Salesforce Governor Limits:
DML Statements Limit:
Maximum of 150 DML statements per Apex transaction.
Conclusion: Incorrect.
Option B: 0
Conclusion: Incorrect, as 150 accounts are inserted before hitting the limit.
Option C: 500
Conclusion: Incorrect, because the governor limit prevents more than 150 DML statements.
Option D: 150
Conclusion: Correct.
Optimizing the Code:
Bulk DML Operations:
Best Practice: Perform DML operations on lists rather than individual records to reduce the number of DML statements.
Optimized Code:
List<Account> accountList = new List<Account>();
for (Integer i = 0 ; i < 500; i++) {
Account a = new Account (Name='New Account ' + i);
accountList.add(a);
}
insert accountList;
Benefits:
Only one DML statement is used (insert accountList).
All 500 accounts are inserted successfully.
Reference:
Analyzing the Code Against Limits:
Number of DML Statements Used:
The code performs one DML statement per iteration.
Total DML statements attempted: 500.
Governor Limit Exceeded:
After 150 DML statements, the code exceeds the limit.
At the 151st insert, a LimitException is thrown.
Number of Accounts Successfully Inserted:
Only the first 150 accounts are inserted before the exception halts execution.
Option Analysis:
Option A: 100
Final Answer:
Best Practices Summary:
Use Collections for DML Operations: Process records in bulk using lists or maps.
Avoid Loops with DML Statements: Do not place DML operations inside loops.

NEW QUESTION # 65
Which approach should be used to provide test data for a test class?

• A. Use a test data factory class to create test data.
• B. Execute anonymous code blocks that create data.
• C. Query for existing records in the database.
• D. Access data in @TestVisible class variables.

Answer: A

NEW QUESTION # 66
What is true of a partial sandbox that is not true of a full sandbox? Choose 2 answers

• A. Use of change sets
• B. Limited to 5 GB of data
• C. Only includes necessary meta data
• D. More frequent refreshes

Answer: B,D

NEW QUESTION # 67
In a single record, a user selects multiple values from a multi-select picklist.
How are the selected values represented in Apex?

• A. As a Set<String> with each value as an element in the set
• B. As a List<String> with each value as an element in the list
• C. As a String with each value separated by a comma
• D. As a String with each value separated by a semicolon

Answer: D

NEW QUESTION # 68
Consider the following code snippet:

As part of the deployment cycle, a developer creates the following test class:

When the test class runs, the assertion fails.
Which change should the developer implement in the Apex test method to ensure the test method executes successfully?

• A. Query the Standard User into memory and enclose lines 15 and 16 within the system ,runAs; method.
• B. Query the Administrator use into memory and enclose lines 15 and 16 within the system,runAs (use); method.
• C. Add @Istest% seeAllDataTrue; to line 12 and enclose lines 15 and 16 within Test .set(Test); and test ste-ptest();.
• D. Add System, runAs (Use; to line 14 and enclose line 15 within Test, startTest); and Test ().

Answer: D

NEW QUESTION # 69
Refer to the following code snippet for an environment has more than 200 Accounts belonging to the Technology' industry:

When the code execution, which two events occur as a result of the Apex transaction?
When the code executes, which two events occur as a result of the Apex transaction?
Choose 2 answers

• A. The Apex transaction succeeds regardless of any uncaught exception and all processed accounts are updated.
• B. If executed In a synchronous context, the apex transaction is likely to fall by exceeding the DHL governor limit.
• C. If executed in an asynchronous context, the apex transaction is likely to fall by exceeding the DML governor limit
• D. The Apex transaction fails with the following message. "SObject row was retrieved via SOQL without querying the requested field Account.Is.Tech__c''.

Answer: D

NEW QUESTION # 70
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.
• B.
• C.
• D.

Answer: A

NEW QUESTION # 71
How many accounts will be inserted by the following block ofcode? for(Integer i = 0 ; i < 500; i++) { Account a = new Account(Name='New Account ' + i); insert a; }

• A. 0
• B. 1
• C. 2
• D. 3

Answer: B

NEW QUESTION # 72
Universal Containers decides to use exclusively declarative development to build out a new Salesforce application. Which three options should be used to build out the database layer for the application? Choose 3 answers

• A. Custom Objects and Fields
• B. Process Builder
• C. Roll-Up Summaries
• D. Triggers
• E. Relationships

Answer: B,C,E

NEW QUESTION # 73
Universal Containers recently transitioned from Classic to Lightning Experience.
One of its business processes requires certain values from the Opportunity cbject to be sent via an HTTP REST callout to its external order management system when the user presses a custom button on the Opportunity detail page. Example values are as follows:
* Name
* Amount
* Account
Which two methods should the developer implement to fulfill the business requirement?
Choose 2 answers

• A. Create a Lightning component quick action that performs the HTTP REST callout, and use a Lightning Action to expose the component on the Opportunity detail page.
• B. Create a Remote Action on the Opportunity object that executes an Apex immediate action to perform the HTTP REST callout whenever the Opportunity Is updated.
• C. Create an after update trigger on the Opportunity object that calls a helper method using @Future (Callour=true) to perform the HTTP REST callout.
• D. Create a custom Visualforce quick action that performs the HTTP REST callout, and use a Visualforce quick action to expose the component on the Opportunity detail page.

Answer: A,D

Explanation:
To send Opportunity values via an HTTP REST callout when a user presses a custom button in Lightning Experience:
Option B: Create a custom Visualforce quick action
A Visualforce page with a custom controller can perform the callout.
The Visualforce page can be added as a quick action on the Opportunity page.
A Lightning component can perform the callout when invoked.
The component can be added to the Opportunity page as a quick action.
Reference:
"You can use Visualforce to create custom quick actions."
- Salesforce Help: Quick Actions
Option C: Create a Lightning component quick action
"Use Lightning components to create custom actions that can be added to Lightning Experience and the Salesforce mobile app."
- Salesforce Help: Lightning Component Actions
Why Other Options Are Incorrect:
Option A:
Remote Actions are used in Visualforce for client-side calls and are not applicable here.
Performing the callout whenever the Opportunity is updated does not meet the requirement of initiating the action via a button click.
Option D:
An after-update trigger would execute on every update, not just when the user presses a button.
Using @future methods may not execute immediately and can't be invoked directly by the user action.

NEW QUESTION # 74
Why would a developer use Test. startTest( ) and Test.stopTest( )?

• A. To start and stop anonymous block execution when executing anonymous Apex code
• B. To indicate test code so that it does not Impact Apex line count governor limits.
• C. To create an additional set of governor limits during the execution of a single test class.
• D. To avoid Apex code coverage requirements for the code between these lines

Answer: C

NEW QUESTION # 75
An sObject named Application_c has a lookup relationship to another sObject named Position_c. Both Application _c and Position_c have a picklist field named Status_c.When the Status_c field on Position_c is updated, the Status_c field on Application_c needs to be populated automatically with the same value, and execute a workflow rule on Application_c.How can a developer accomplish this?

• A. By configuring a cross-object field update with a workflow.
• B. By changing Application_c.Status_c into a roll -up summary field.
• C. By changing Application_c.Status_c into a formula field.
• D. By using an Apex trigger with a DML operation.

Answer: D

NEW QUESTION # 76
Which three per-transaction limits have higher governor limits in asynchronous Apex transactions?

• A. Maximum CPU time
• B. Maximum heap size
• C. Total SOQL queries
• D. Records returned by SOQL
• E. Maximum execution time

Answer: A,C,D

NEW QUESTION # 77
Which three resources in an Azure Component can contain JavaScript functions?

• A. helper
• B. Controllers
• C. Renderer
• D. Style
• E. Design

Answer: A,B,C

NEW QUESTION # 78
A developer wrote an Apex method to update a list of Contacts and wants to make it available for use by Lightning web components.
Which annotation should the developer add to the Apex method to achieve this?

• A.
• B.
• C.
• D.

Answer: C

NEW QUESTION # 79
Which three data types can a SOQL query return?
Choose 3 answers

• A. Long
• B. sObject
• C. List
• D. Integer
• E. Double

Answer: B,C,D

Explanation:
A SOQL query can return the following data types:
Option A: sObject
Example:
Account acc = [SELECT Id, Name FROM Account WHERE Id = :accountId];
Option D: List
Example:
List<Contact> contacts = [SELECT Id, Name FROM Contact WHERE AccountId = :accountId]; Option E: Integer Example:
Integer contactCount = [SELECT COUNT() FROM Contact WHERE AccountId = :accountId]; Why Other Options Are Incorrect:
Option B: Double
Aggregate functions like SUM() return Decimal, not Double.
Reference:
"Aggregate functions other than COUNT() must be aliased (using the AS keyword) so that they can be retrieved in the records."
- SOQL and SOSL Reference
Option C: Long
Long is not a data type returned by SOQL queries.

NEW QUESTION # 80
A developer needs to provide a Visualforce page that lets users enter Product-specific details during a Sales cycle. How can this be accomplished? (Choose 2)

• A. Download a Managed Package from the AppExhange that provides a custom Visualforce page to modify.
• B. Download an Unmanaged Package from the AppExchange that provides a custom Visualforce page to modify.
• C. Create a new Visualforce page and an Apex controller to provide Product data entry.
• D. Copy the standard page and then make a new Visualforce page for Product data entry.

Answer: B,C

NEW QUESTION # 81
A developer wrote a workflow email alert on case creation so that an email is sent to the case owner manager when a case is created. When will the email be sent?

• A. Before Trigger execution.
• B. After Committing to database.
• C. Before Committing to database.
• D. After Trigger execution.

Answer: B

NEW QUESTION # 82
A software company is using Salesforce to track the companies they sell their software to in the Account object. They also use Salesforce to track bugs in their software with a custom object, Bug__c.
As part of a process improvement initiative, they want to be able to report on which companies have reported which bugs. Each company should be able to report multiple bugs and bugs can also be reported by multiple companies.
What is needed to allow this reporting?

• A. Lookup field on sug_c to Account
• B. Roll-up summary field of Bug__c on Account
• C. Junction object between Bug_c and Account
• D. Master-detail field on Bug__c to Account

Answer: C

Explanation:
The requirement is to model a many-to-many relationship between Account and Bug__c:
Each Account (company) can report multiple bugs.
Each Bug__c can be reported by multiple accounts.
To represent a many-to-many relationship in Salesforce, we use a junction object.
Option A: Junction object between Bug__c and Account
Correct Answer.
Create a custom junction object, e.g., AccountBug__c, with two master-detail relationships:
One to Account.
One to Bug__c.
This allows linking accounts and bugs in a many-to-many fashion.
Enables reporting on which companies have reported which bugs.
This would create a one-to-many relationship (one account to many bugs), but a bug cannot be associated with multiple accounts.
Option C: Lookup field on Bug__c to Account
Incorrect.
Similar to Option B, it creates a one-to-many relationship.
Option D: Roll-up summary field of Bug__c on Account
Incorrect.
Roll-up summary fields require a master-detail relationship.
Does not address the many-to-many requirement.
Conclusion:
To allow reporting on the many-to-many relationship, a junction object between Bug__c and Account is needed, which is Option A.
Reference:
Creating Many-to-Many Relationships
Incorrect Options:
Option B: Master-detail field on Bug__c to Account
Incorrect.

NEW QUESTION # 83
The Account object in an organization has a master-detail relationship to a child object called Branch. The following automations exist:
* Roll-up summary fields
* Custom validation rules
* Duplicate rules
developer created a trigger on the Account object.
Which two things should the developer consider while testing the trigger code?
Choose 2 answers

• A. Duplicate rules are executed once all DML operations commit to the database.
• B. Rollup summary fields can cause the parent record to go through Save.
• C. The validation rules will cause the trigger to fire again.
• D. The trigger may fire multiple times during a transaction.

Answer: B,D

Explanation:
A . Roll-up summary fields can cause the parent record to go through Save:
When a roll-up summary field on a parent object (like Account) is updated due to changes in child records (like Branch), the parent record (Account) is implicitly saved again.
This can result in the execution of the trigger on the parent object. Developers must consider this behavior to avoid unintended recursion or infinite loops.
Reference:
C . The trigger may fire multiple times during a transaction:
Triggers can execute multiple times within a single transaction, especially when there are operations such as updates to the parent record caused by roll-up summary fields or workflows.
Developers should implement logic to ensure that the trigger handles multiple executions correctly (e.g., using a static variable to prevent recursion).
Why not the other options?
B . Duplicate rules are executed once all DML operations commit to the database:
This is incorrect because duplicate rules execute before the DML operation is committed. Duplicate rules prevent duplicate records from being created or updated before the database operation occurs.
D . The validation rules will cause the trigger to fire again:
This is incorrect because validation rules do not cause triggers to fire again. Validation rules validate the record and may prevent DML operations, but they do not independently re-trigger the Apex trigger.
Trigger Context and Recursion
Roll-Up Summary Field Documentation

NEW QUESTION # 84
A developer needs to create a custom Interface in Apex.
Which three considerations must the developer keep in mind while developing the Apex Interface?
Choose 3 answers

• A. The Apex class must be declared using the interface keyword.
• B. The Apex interface class access modifier can be set to Private, Public, or Global.
• C. New methods can be added to a public interface within a released package.
• D. A method implementation can be defined within the Apex Interface.
• E. A method defined In an Apex Interface cannot have an access modifier.

Answer: A,D,E

NEW QUESTION # 85
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