Try and practice the latest Salesforce : Mule-Dev-201 real questions & answers
Updated: Oct 12, 2026
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Salesforce Mule-Dev-201 Exam Overview:
| Certification Vendor: | Salesforce |
|---|---|
| Exam Name: | Salesforce Certified MuleSoft Developer Exam |
| Exam Number: | Mule-Dev-201 |
| Exam Duration: | 120 minutes |
| Passing Score: | 70% |
| Related Certifications: | Salesforce Certified MuleSoft Developer II Salesforce Certified MuleSoft Architect |
| Exam Price: | US$200 |
| Real Exam Qty: | 60-65 |
| Exam Format: | Multiple Choice, Multiple Select, Scenario-based |
| Available Languages: | Japanese, English |
| Certificate Validity Period: | No expiration; requires maintenance updates |
| Recommended Training: | MuleSoft Developer Course Trailhead MuleSoft Modules |
| Exam Registration: | Pearson VUE Scheduling Salesforce Certification Registration |
| Sample Questions: | Salesforce Mule-Dev-201 Sample Questions |
| Exam Way: | Online proctored or onsite at Pearson VUE testing centers |
| Pre Condition: | No mandatory prerequisites; recommended 6+ months experience with Mule 4 and Anypoint Platform, completion of MuleSoft Developer course |
| Official Syllabus URL: | https://help.salesforce.com/s/articleView?id=005298959&language=en_US |
Salesforce Mule-Dev-201 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Testing and Debugging | 10% | - Debug applications using Anypoint Studio - Write unit tests with MUnit - Use mocking and test doubles |
| Topic 2: Building API Implementations | 10% | - Implement routing and transformation logic - Implement APIs from specifications - Use connectors to integrate systems |
| Topic 3: Accessing and Modifying Mule Events | 10% | - Access and modify payload, attributes and variables - Use DataWeave for transformation - Enrich events using connectors |
| Topic 4: Designing APIs | 8% | - Define parameters, responses and data types - Define API specifications with RAML - Use REST API methods and resources |
| Topic 5: Creating Application Networks | 7% | - Explain API-led connectivity principles - Identify application network concepts - Describe Anypoint Platform components |
| Topic 6: Error Handling and Transactions | 8% | - Configure error handlers - Handle retries and dead-letter queues - Implement transaction management |
| Topic 7: Structuring Mule Applications | 10% | - Use flows, subflows and flow references - Organize configurations and properties - Manage error handling and scopes |
| Topic 8: Deploying and Managing Applications | 10% | - Deploy to CloudHub and on-premises - Explain deployment models - Monitor and manage applications |
| Topic 9: Data Transformation with DataWeave | 10% | - Handle different data formats - Transform complex data structures - Write expressions and functions |
| Topic 10: Security and Governance | 7% | - Apply security policies - Enforce governance standards - Manage access and authentication |
Salesforce Certified MuleSoft Developer Sample Questions:
Which of the below functionality is provided by zip operator in DataWeave?
- A. Used for sending attachments
- B. Minimize the size of long text using encoding.
- C. All of the above
- D. Merges elements of two lists (arrays) into a single list
Correct Answer: D 🗳️
Explanation: Only visible for Actual4Cert members. You can sign-up / login (it's free).
Refer to the exhibits.
The Validation component in the private flow throws an error. What response message is returnedto a client request to the main flow's HTTP Listener?
- A. Validation Error
- B. Success - main flow
- C. Error - main flow
- D. Error - private flow
Correct Answer: C 🗳️
Explanation: Only visible for Actual4Cert members. You can sign-up / login (it's free).
Refer to the exhibit.
What DataWeave expression transforms the conductorlds arrayto the XML output?
- A.
- B.
- C.
- D.
Correct Answer: A 🗳️
Refer to the exhibits.
The main flow contains anHTTP Request. The HTTP Listeners and HTTP Request use default configurations.
What
values are accessible in the child flow after a web client submits a request to http://localhost:8081/order? col or = red?
- A. payloadquantity var color query param
- B. payloadquantity var
- C. payloadcolor query param
- D. payload
Correct Answer: D 🗳️
What DataWeave expressiontransforms the array a to the XML output?
- A. 1.1. trains:2.2. {(3.3. a map ((engId, index) ->4.4. train: {5.5. TrainNumber: engId6.6.7.7. }8.8. )9.9. )}
- B. 1.1. {2.2. trains:3.3. a map ((engId, index) ->4.4. train: {5.5. TrainNumber: engId6.6.7.7. }8.8. )9.}
- C. 1.1. {(2.2. trains:3.3. a map ((engId, index) ->4.4. train: {5.5. TrainNumber: engId6.6.7.7. }8.8. )9.)}
- D. 1.1. trains:2.2. a map ((engId, index) ->3.3. train: {4.4. TrainNumber:engId5.5.6.6. }7.7. )
Correct Answer: A 🗳️
Explanation: Only visible for Actual4Cert members. You can sign-up / login (it's free).
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