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Salesforce Mule-Dev-301

Mule-Dev-301

Exam Code: Mule-Dev-301

Exam Name: Salesforce Certified MuleSoft Developer II

Updated: Oct 12, 2026

Q&A Number: 62 Q&As

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Salesforce Mule-Dev-301 Exam Syllabus Topics:

SectionObjectives
Topic 1: Integration and API-led Connectivity- System, Process, and Experience APIs design
- API-led connectivity principles
Topic 2: Anypoint Platform Development- Mule application development
- Anypoint Studio usage and project structure
Topic 3: Deployment and Testing- Unit testing and integration testing approaches
- Deployment strategies across environments
Topic 4: Error Handling and Troubleshooting- Debugging and logging techniques
- Exception handling strategies in Mule applications
Topic 5: Security and Governance- Authentication and authorization mechanisms
- API policies and security enforcement
Topic 6: DataWeave and Data Transformation- DataWeave scripting and transformations
- Mapping, filtering, and payload manipulation

Salesforce Certified MuleSoft Developer II Sample Questions:

Question #1
When a client and server are exchanging messages during the mTLS handshake, what is being agreed on during the cipher suite exchange?

A. An encryption algorithm
B. A protocol
C. The public key format
D. The TLS version


Question #2
A Mule application includes a subflow containing a Scatter-Gather scope. Within each leg of the Scatter- Gather, an HTTP connector calls a PUT endpoint to modify records in different upstream systems. The subflow is called from inside an Until Successful scope to retry if a transient exception is raised.
A technical spike is being performed to increase reliability of the Mule application.
Which steps should be performed within the Mule flow above to ensure idempotent behavior?

A. Ensure an error-handling flow performs corrective actions to roll back all changes if any leg of the Scatter-Gather fails
B. Change the PUT requests inside the Scatter-Gather to POST requests
C. None; the flow already exhibits idempotent behavior
D. Remove the PUT requests from the Scatter-Gather and perform them sequentially


Question #3
A Mule application deployed to a standalone Mule runtime uses VM queues to publish messages to be consumed asynchronously by another flow.
In the case of a system failure, what will happen to in-flight messages in the VM queues that have not been consumed?

A. For persistent queues, the message will be processed after the system comes online
B. For any type of queue, the message will be processed after the system comes online
C. For transient queues, the message will be processed after the system comes online
D. For any type of queue, the message will be lost


Question #4
A developer has created the first version of an API designed for business partners to work with commodity prices.
What should the developer do to allow more than one major version of the same API to be exposed by the implementation?

A. In Anypoint Studio, generate scaffolding from the RAML, and then modify the flow names generated by APIkit to include a variable with the major version number
B. In Design Center, open the RAML and modify each operation to include the major version number
C. In Design Center, open the RAML and modify baseUri to include a variable that indicates the version number
D. In Anypoint Studio, generate scaffolding from the RAML, and then modify the < http:listener > in the generated flows to include a parameter to replace the version number


Question #5
Refer to the exhibits.
Based on the code snippet, schema.json file, and payload below, what is the outcome of the given code snippet when a request is sent with the payload?
Exhibits:

A. The Mule flow will execute successfully with status code 200, and in response will display the message
"Age in years which must be equal to or greater than zero."
B. The Mule flow will throw the exception "JSON:SCHEMA_NOT_HONOURED"
C. The Mule flow will execute successfully with status code 200, and the response will be the JSON sent in request
D. The Mule flow will execute successfully with status code 204


Solutions:

Question #1
Correct Answer: A
Question #2
Correct Answer: C
Question #3
Correct Answer: A
Question #4
Correct Answer: C
Question #5
Correct Answer: B

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