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: Aug 23, 2026

Q & A: 237 Questions and Answers

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Salesforce Mule-Dev-201 Exam Syllabus Topics:

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

Salesforce Certified MuleSoft Developer Sample Questions:

1. A
web client submits a request to http://localhost:8081?flrstName=john. What is the correct DataWeave expression to access the firstName parameter?

A) #[message.inboundProperties.'http.query.params'.firstName]
B) #[message.queryParams.hrstName]
C) #[attributes.'http.query.params'.firstName]
D) #[attributes.queryParams.firstName]


2. 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) Application property cannot be accessed in Dataweave
C) { port : p('db.port')}
D) { port : {db:port}}


3. Refer to the exhibits. The Set Payload transformer in the addltem child flow uses DataWeave to create an orderobject.
What is the correct DataWeave code for the Set Payload transformer in the createOrder flow to use the addltem child flow to add a router call with the price of 100 to the order?

A) lookup( "addltern", { price: "100", item: "router", itemType: "cable" } )
B) addltem( { payload: { price: "100", item: "router", itemType: "cable" > } )
C) lookup( "addltem", { payload: { price: "100", item: "router", itemType: "cable" } > )
D) addltem( { price: "100", item: "router", itemType: "cable" } )


4. How would you debug Mule applications?

A) By Deploying apps on production
B) Use third party debugger application
C) Using debugger component
D) Checking RAML specifications


5. What is the correct way to format the decimal 200.1234 as a string to two decimal places?

A) 200.1234 as String{format: ".0#"}
B) 200.1234 as String as format: ".0#"
C) 200.1234 as string {format: ".0#"}
D) 200.1234 as string as format: ".0#"


Solutions:

Question # 1
Answer: D
Question # 2
Answer: C
Question # 3
Answer: C
Question # 4
Answer: C
Question # 5
Answer: A

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