Salesforce Certified MuleSoft Developer II : Mule-Dev-301

Mule-Dev-301 pass collection

Exam Code: Mule-Dev-301

Exam Name: Salesforce Certified MuleSoft Developer II

Updated: Aug 28, 2026

Q & A: 62 Questions and Answers

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Salesforce Mule-Dev-301 Exam Syllabus Topics:

SectionWeightObjectives
Implement Maintainable and Modular Mule Applications and Their Maven Builds25%- Implement modular Mule application structures
  • 1. Create custom API rules
  • 2. Optimize Maven build configurations
  • 3. Implement Maven-based automated deployments
  • 4. Implement unit testing with MUnit framework
  • 5. Execute MUnit tests with Maven
Secure Data at Rest and in Transit20%- Implement security best practices
  • 1. Expose APIs over HTTPS
  • 2. Implement TLS mutual authentication
  • 3. Secure sensitive data in Mule applications
  • 4. Create and distribute certificates and keys
  • 5. Implement secure property management
Expose Production-Ready Anypoint Platform Managed APIs13%- Manage APIs with Anypoint Platform
  • 1. Implement server-side API caching
  • 2. Configure API policies
  • 3. Request and manage API access
  • 4. Implement HTTP callbacks
  • 5. Implement API versioning
Implement Monitorable Mule Applications15%- Implement monitoring and logging
  • 1. Implement monitoring dashboards and alerts
  • 2. Expose health check endpoints
  • 3. Change log levels dynamically
  • 4. Configure and evaluate application logs
Implement Performant and Reliable Mule Applications27%- Optimize reliability and performance
  • 1. Implement ObjectStore persistence
  • 2. Implement performant API invocations
  • 3. Implement asynchronous processing
  • 4. Validate assertions using validation modules
  • 5. Build fault-tolerant message processing

Salesforce Certified MuleSoft Developer II Sample Questions:

1. Which pattern should be used to invoke multiple HTTP APIs in parallel and roll back failed requests in sequence?

A) A Parallel for Each scope with each HTTP request wrapped in a Try scope
B) Scatter-Gather as central Saga orchestrator for all API request with compensating actions for failing routes
C) A database as a transactional outbox and an Until Successful router to retry any requests
D) VM queues as a reliability pattern with error handlers to roll back any requests


2. A developer is working on a project that requires encrypting all data before sending it to a backend application. To accomplish this, the developer will use PGP encryption in the Mule 4 Cryptography module.
What is required to encrypt the data before sending it to the backend application?

A) The application needs the private key from the backend service to encrypt the data
B) The application needs the public key from the backend service to encrypt the data
C) The application needs to configure HTTPS TLS context information to encrypt the data
D) The application needs to both the private and public keys to encrypt the data


3. Refer to the exhibit.
What action must be performed to log all the errors raised by the VM Connector?

A) Add <AsyncLOgger name='orgroute.extensions vm' level=ERROR'I> inside the Logger tag
B) Nothing, as error-level events are automatically logged
C) Configure <Logger level-'ERROR'/> inside the VM Connector configuration
D) Add <AsyncLOgger name='orgroute.extensions vm' level=ERROR'/> inside the Appenders tag


4. A Mule application includes a subflow containing a Scatter.Gather scope. Within each log of the Scatter.Gatter. an HTTP connector calls a PUT endpoint to modify records in different upstream system. The subflow is called inside an Unit successful scope to retry if a transitory 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 the ensure idempontent behavior?

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


5. In a Mule project, Flow-1 contains a flow-ref to Flow-2 depends on data from Flow-1 to execute successfully.
Which action ensures the test suites and test cases written for Flow-1 and Flow-2 will execute successfully?

A) Chain together the test suites and test cases for Flow-1 and Flow-2
B) Use ''Before Test Case'' To collect data from Flow-1 test cases before running Flow-2 test cases
C) Use ''Set Event to pass the input that is needed, and keep the test cases for Flow-1 and Flow-2 independent
D) Use 'After Test Case' to produce the data needed from Flow-1 test cases to pass to Flow-2 test cases


Solutions:

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

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