Salesforce Certified MuleSoft Developer: Mule-Dev-201 Exam
"Salesforce Certified MuleSoft Developer", also known as Mule-Dev-201 exam, is a Salesforce Certification. With the complete collection of questions and answers, PrepAwayPDF has assembled to take you through 237 Q&As to your Mule-Dev-201 Exam preparation. In the Mule-Dev-201 exam resources, you will cover every field and category in Salesforce MuleSoft Certification helping to ready you for your successful Salesforce Certification.
- Exam Code: Mule-Dev-201
- Exam Name: Salesforce Certified MuleSoft Developer
- Certification Provider: Salesforce
- Corresponding Certification: Salesforce MuleSoft
- Updated: Aug 22, 2026
- No. of Questions: 237 Questions & Answers with Testing Engine
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Salesforce Mule-Dev-201 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Creating Application Networks | 7% | - Describe Anypoint Platform components - Explain API-led connectivity principles - Identify application network concepts |
| Data Transformation with DataWeave | 10% | - Handle different data formats - Write expressions and functions - Transform complex data structures |
| Designing APIs | 8% | - Define parameters, responses and data types - Use REST API methods and resources - Define API specifications with RAML |
| Deploying and Managing Applications | 10% | - Explain deployment models - Monitor and manage applications - Deploy to CloudHub and on-premises |
| Error Handling and Transactions | 8% | - Configure error handlers - Implement transaction management - Handle retries and dead-letter queues |
| Security and Governance | 7% | - Apply security policies - Enforce governance standards - Manage access and authentication |
| Testing and Debugging | 10% | - Use mocking and test doubles - Write unit tests with MUnit - Debug applications using Anypoint Studio |
| Structuring Mule Applications | 10% | - Use flows, subflows and flow references - Manage error handling and scopes - Organize configurations and properties |
| Building API Implementations | 10% | - Implement APIs from specifications - Implement routing and transformation logic - Use connectors to integrate systems |
| Accessing and Modifying Mule Events | 10% | - Enrich events using connectors - Access and modify payload, attributes and variables - Use DataWeave for transformation |
Salesforce Certified MuleSoft Developer Sample Questions:
1. Refer to the payload.

The Set payload transformer sets the payload to an object. The logger component'smessage attribute is configured with the string "Result #["INFO"++ payload]" What is the output of logger when this flow executes?
A) 1. 1. "You called the function '++' with these arguments:2. 2. 1: String ("INFO")3. 3: Object ({student:
{name: "Anay" as String {class: "java.lang.String"},age: 6 as Numbe...)
B) Result INFO{"student":{"name":"Anay","age":6}}
C) Result INFOpayload
D) Error : You evaluated inline expression # without ++
2. According to Mulesoft, how are Modern APIs treated as?
A) Products
B) Rest API's
C) SOAP API's
D) Code
3. Refer to the exhibits.

What payload and quantity are logged at the end of the main flow?
A) [[1,2,3,4], 14]
B) [[1,2,3,4], 10]
C) [[order1, order2, order3, order4], 14]
D) [orderlorder2order3order4,14]
4. Refer to exhibits.
What message should be added to Logger component so that logger prints "The city is Pune" (Double quote should not be part of logged message)?
A) #["The city is" ++ payload.City]
B) #[The city is ${payload.City}
C) The city is + #[payload.City]
D) The city is #[payload.City]
5. Refer to the exhibit.

How should be the where clause written for the configured input parameters in such a way that it achieves below SQL query?
A) WHERE city = :city AND state = :state
B) WHERE city := city AND state := state
C) WHERE city = attributes.cityAND state = attributes.state
D) WHERE city := ${city} AND state := ${state}
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: A | Question # 3 Answer: A | Question # 4 Answer: D | Question # 5 Answer: A |
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