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Newest DEX-450 Learning Materials: Programmatic Development using Apex and Visualforce in Lightning Experience Deliver Splendid Exam Braindumps

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Salesforce DEX-450 exam is designed for professionals who are looking to enhance their knowledge and skills in programmatic development using Apex and Visualforce in a Lightning Experience. Programmatic Development using Apex and Visualforce in Lightning Experience certification exam measures the candidate's ability to design, develop, test, and deploy custom applications using these technologies. Passing DEX-450 Exam demonstrates the candidate's proficiency in the Salesforce platform's programmatic development environment and sets them apart as an expert in this field.

Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Sample Questions (Q174-Q179):

NEW QUESTION # 174
What should a developer do to check the code coverage of a class after running all tests?

A. View the Class Test Percentage tab on the Apex Class list view in Salesforce Setup.
B. Select and run the class on the Apex Test Execution page in the Developer Console.
C. View the Code Coverage column in the list view on the Apex Classes page.
D. View the code coverage percentage for the class using the Overall Code Coverage panel in the Developer Console Tests tab,

Answer: D

Explanation:
To check the code coverage of a class after running all tests, a developer can use the Developer Console.
Option B: View the code coverage percentage for the class using the Overall Code Coverage panel in the Developer Console Tests tab.
Correct Method.
In the Developer Console, navigate to the Tests tab.
After running tests, the Overall Code Coverage panel displays code coverage statistics.
You can see the coverage percentage for individual classes.
There is no Class Test Percentage tab on the Apex Class list view in Salesforce Setup.
Code coverage is not displayed there.
Option C: View the Code Coverage column in the list view on the Apex Classes page.
Incorrect.
The Code Coverage column is not displayed by default in the Apex Classes list view.
Code coverage details are accessed via the Developer Console or Apex Test Execution.
Option D: Select and run the class on the Apex Test Execution page in the Developer Console.
Partially Correct but Not the Best Answer.
While you can run tests from the Apex Test Execution page, it doesn't directly show code coverage for individual classes.
The best place to view code coverage is the Overall Code Coverage panel.
Conclusion:
The developer should view the code coverage percentage in the Developer Console's Overall Code Coverage panel, which is Option B.
Reference:
Checking Code Coverage in the Developer Console
Running and Monitoring Tests
Incorrect Options:
Option A: View the Class Test Percentage tab on the Apex Class list view in Salesforce Setup.
Incorrect.

NEW QUESTION # 175
What does the Lightning Component framework provide to developers?

A. Templates to create custom components.
B. Extended governor limits for applications
C. Prebuilt component that can be reused.
D. Support for Classic and Lightning UIS.

Answer: C

NEW QUESTION # 176
Given the following block code: try{ List <Accounts> retrievedRecords = [SELECT Id FROM Account WHERE Website = null]; }catch(Exception e){ //manage exception logic } What should a developer do to ensure the code execution is disrupted if the retrievedRecordslist remains empty after the SOQL query?

A. Check the state of the retrievedRecords variable and access the first element of the list if the variable is empty.
B. Check the state of the retrieveRecords variable and throw a custom exception if the variable is empty.
C. Replace the retrievedRecords variable declaration from a List of Account to a single Account.
D. Check the state of the retrievedRecords variable and use System.assert(false) if the variable is empty

Answer: D

NEW QUESTION # 177
A Lightning component has a wired property, searchResults, that stores a list of Opportunities. Which definition of the Apex method, to which the searchResults property is wired, should be used?

A. @AuraEnabled(cacheable=false) public List<Opportunity> search(String term) { /*implementation*/ }
B. @AuraEnabled(cacheable=true) public List<Opportunity> search(String term) { /*implementation*/ }
C. @AuraEnabled(cacheable=true)
public static List<Opportunity> search(String term) { /* implementation*/ }
D. @AuraEnabled(cacheable=false) public static List<Opportunity> search(String term) { /*implementation*/ }

Answer: C

NEW QUESTION # 178
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 records retrieved by SOQL queries
B. Total number of DML statement issued
C. Total number of records processed as a result of DML statements
D. Total number of SOQL queries issued

Answer: A

NEW QUESTION # 179
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