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The DEX-450 certification exam measures the knowledge and skills required to build custom applications on the Salesforce platform using Apex and Visualforce in Lightning Experience. It covers a range of topics including Apex programming syntax, Apex data types, Apex controllers, Apex triggers, Visualforce pages, and Lightning components. DEX-450 exam also covers best practices for designing and implementing custom applications on the Salesforce platform.
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The DEX-450 exam is an essential certification for developers who want to demonstrate their expertise in programmatic development using Apex and Visualforce in Lightning Experience. This credential can help professionals advance their careers, build their reputation in the industry, and gain recognition as experts in Salesforce development.
Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Sample Questions (Q64-Q69):
NEW QUESTION # 64
Which aspect of Apex programming is limited due to multitenancy?
- A. The number of methods in an Apex Class
- B. The number of active Apex classes
- C. The number of records processed in a loop
- D. The number of records returned from database queries
Answer: D
NEW QUESTION # 65
Which feature allows a developer to create test records for use in test classes?
- A. Webservicetests
- B. Documents
- C. Static resources
- D. Httpcalloutmocks
Answer: A
NEW QUESTION # 66
What is the maximum number of SOQL queries used by the following code? List<Account> aList = [SELECT Id FROM Account LIMIT 5]; for (Account a : aList){ List<Contact> cList = [SELECT Id FROM Contact WHERE AccountId = :a.Id); }
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION # 67
A developer needs to create a baseline set of data (Accounts, Contacts, Products, Assets) for an entire suite of tests allowing them to test independent requirements various types of Salesforce Cases. Which approach can efficiently generate the required data for each unit test?
- A. Create test data before test.startTest() in the test unit.
- B. Use @TestSetup with a void method
- C. Add @IsTest(seeAllData=true) at the start of the unit test class
- D. Create a mock using Stub API
Answer: B
NEW QUESTION # 68
A developer wrote the following two classes:
The StatusFetcher class successfully compiled and saved. However, the Calculator class has a compile time error.
How should the developer fix this code?
- A. Change the class declaration for the statusFetcher class to public with inherited sharing.
- B. Make the isActive method in the StatusFetcher class public.
- C. Make the doCalculations method in the Calculation class private.
- D. Change the class declaration for the Calculator class to public with inherited sharing.
Answer: B
NEW QUESTION # 69
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