Free Salesforce DEX401 Exam Questions

Become Salesforce Certified with updated DEX401 exam questions and correct answers

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Total 235 Questions | Updated On: Aug 03, 2026

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Question 1

Refer to the exhibits.

A web client sends sale data in a POST request to the Mule application. The Transform Message component then enrich the payload by prepending a vendor name to the sale data.

What is written to the sales.csv file when the flow executes?

A : The enriched payload in JSON format

B : The enriched payload in XML format

C : The enriched payload in CSV format

D : An error message

Answer: A

Question 2

A Utlility.dwl is located in a Mule project at src/main/resources/modules. The Utility.dwl file defines a function named encryptString that encrypts a String What is the correct DataWeave to call the encryptString function in a Transform Message component?

A : 1. %dw 2.02. output application/json3. import modules::Utility4. ---5. Utility::encryptString( 'John Smith' )

B : 1. %dw 2.02. output application/json3. import modules::Utility4. ---5. encryptString( 'John Smith' )

C : 1. %dw 2.02. output application/json3. import modules.Utility4. ---5. encryptString( 'John Smith' )

D : 1. %dw 2.02. output application/json3. import modules.Utility4. ---5. Utility.encryptString( 'John Smith' )

Answer: B

Question 3

As a part of requirement , application property defined below needs to be accessed as dataweave expression. What is the correct expression to map it to port value?

A : { port : p('db.port')}

B : { port : {db:port}}

C : { port : p['db.port']}

D : Application property cannot be accessed in Dataweave

Answer: A

Question 4

A company has an API to manage departments, with each department identified by a unique deptld. The API was built with RAML according to MuleSoft best practices.

What is valid RAML to specify a method to update the details for a specific department?

A :