Salesforce Mule-Dev-201 : Salesforce Certified MuleSoft Developer

Mule-Dev-201 real exams

Exam Code: Mule-Dev-201

Exam Name: Salesforce Certified MuleSoft Developer

Updated: Sep 18, 2026

Q & A: 237 Questions and Answers

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Salesforce Mule-Dev-201 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Structuring Mule Applications10%- Manage error handling and scopes
- Organize configurations and properties
- Use flows, subflows and flow references
Topic 2: Security and Governance7%- Apply security policies
- Manage access and authentication
- Enforce governance standards
Topic 3: Accessing and Modifying Mule Events10%- Use DataWeave for transformation
- Access and modify payload, attributes and variables
- Enrich events using connectors
Topic 4: Designing APIs8%- Use REST API methods and resources
- Define API specifications with RAML
- Define parameters, responses and data types
Topic 5: Testing and Debugging10%- Debug applications using Anypoint Studio
- Write unit tests with MUnit
- Use mocking and test doubles
Topic 6: Creating Application Networks7%- Describe Anypoint Platform components
- Explain API-led connectivity principles
- Identify application network concepts
Topic 7: Deploying and Managing Applications10%- Explain deployment models
- Deploy to CloudHub and on-premises
- Monitor and manage applications
Topic 8: Error Handling and Transactions8%- Handle retries and dead-letter queues
- Configure error handlers
- Implement transaction management
Topic 9: Data Transformation with DataWeave10%- Handle different data formats
- Write expressions and functions
- Transform complex data structures
Topic 10: Building API Implementations10%- Use connectors to integrate systems
- Implement routing and transformation logic
- Implement APIs from specifications

Salesforce Certified MuleSoft Developer Sample Questions:

Question #1

What payload is returned by a Database SELECT operation that does not match any rows in the database?

  • A. false
  • B. Empty Array
  • C. null
  • D. Exception
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

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Question #2

Refer to the exhibits.


A web client sends a POST request with the payload {"oid": "1000", "itemid": "AC200", "qty": "4" } to the Mule application. The File Write operation throws a FILE:CONNECTIVITY error.
Whatresponse message is returned to the web client?

  • A. ''FILE:CONNECnvnY'
  • B. "OTHER ERROR"
  • C. "File written"
  • D. "ORDER:NOT_CREATED"
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

Question #3

Refer tothe exhibits.


The Batch job processes an array of strings.
What information is logged by the logger component after the batch job scope completes processing of the input payload?

  • A. Total Records Processed: 3Successful Records: 3Failed Records: 0
  • B. Total Records Processed: 3Successful Records: 3Failed Records: 0payload: ["A","B","C"]
  • C. Total Records Processed: 3Successful Records: 3Failed Records: 0payload: ["a", "b", "c"]
  • D. ["A","B","C"]
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

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Question #4

Refer to the exhibits.


Mule application has an HTTP request configurationwhere host name is hardcoded. Organization is looking to move host and port values to configuration file. What valid expression can be used to so that HTTP configuration can pick the value from configuration file?

  • A. ${http.host}
  • B. #{training.host}
  • C. #[training.host]
  • D. ${training.host}
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

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Question #5

Refer to the exhibit.

The default scope in choice router recursively calls the color flow.
A web client sends a PUT request to the HTTP listener with payload Blue.
What response is returned to the web client?

  • A. "Green"
  • B. A timeout error
  • C. ["Blue", "Red", "Blk"]
  • D. "Blk"
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

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