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Salesforce DEX-450 exam is a programmatic development certification that focuses on using Apex and Visualforce in the Lightning Experience. It is designed for developers who want to demonstrate their expertise in building custom applications and integrations on the Salesforce platform. DEX-450 exam covers a range of topics, including Apex programming language, Visualforce framework, and Lightning Components.
The Programmatic Development using Apex and Visualforce in Lightning Experience certification exam has a total of 60 multiple-choice questions that need to be answered within 105 minutes. The passing score is 65%, which means that the candidate needs to answer at least 39 questions correctly. DEX-450 Exam Fee is $200, and it can be taken either online or in the testing center.
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The DEX-450 exam is a 105-minute long test, consisting of 60 multiple-choice questions. To pass the exam, candidates must score at least 65%. DEX-450 exam covers a wide range of topics, including Apex programming language, Visualforce, Lightning components, and integration with other systems. DEX-450 Exam also evaluates the candidate's ability to design, develop, test, and deploy custom Salesforce applications using programmatic tools.
Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Sample Questions (Q32-Q37):
NEW QUESTION # 32
The Account object in an organization has a master detail relationship to a child object called Branch. The following automations exist:
* Rollup summary fields
* Custom validation rules
* Duplicate rules
A developer created a trigger on the Account object.
What two things should the developer consider while testing the trigger code?
Choose 2 answers
- A. Rollup summary fields can cause the parent record to go through Save.
- B. Duplicate rules are executed once all DML operations commit to the database.
- C. The validation rules will cause the trigger to fire again.
- D. The trigger may fire multiple times during a transaction.
Answer: A,D
NEW QUESTION # 33
A developer created a new after insert trigger on the Lead object that creates Task records for each Lead.
After deploying to production, an existing outside integration that inserts Lead records in batches to Salesforce is occasionally reporting total batch failures being caused by the Task insert statement. This causes the integration process in the outside system to stop, requiring a manual restart.
Which change should the developer make to allow the integration to continue when some records in a batch cause failures due to the Task insert statement, so that manual restarts are not needed?
- A. Deactivate the trigger before the integration runs.
- B. Remove the Apex class from the integration user's profile.
- C. Use the Database method with allow one set to false.
- D. Use a try-catch block after the insert statement.
Answer: C
NEW QUESTION # 34
Which Apex collection is used to ensure that all values are unique?
- A. An sObject
- B. An Enum
- C. A List
- D. A Set
Answer: D
NEW QUESTION # 35
A developer is alerted to an issue with a custom Apex trigger that is causing records to be duplicated.
What is the most appropriate debugging approach to troubleshoot the issue?
- A. Review the Historical Event logs to Identify the source of the issue.
- B. Disable the trigger m production and test to see If the issue still occurs.
- C. Add system.debug statements to the code to track the execution flow and identify the issue.
- D. Use the Apex Interactive Debugger to step through the code and Identify the issue.
Answer: C
NEW QUESTION # 36
What are two ways a developer can get the status of an enqueued job for a class that implements the queueable interface?
Choose 2 answers
- A. View the Apex Flex Queue
- B. View the Apex Jobs page
- C. Query the AsyncApexJob object
- D. View the Apex Status page
Answer: A,C
NEW QUESTION # 37
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