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Salesforce Mule-Dev-301 Exam Syllabus Topics:

Section	Weight	Objectives
Secure Data at Rest and in Transit	20%	- Implement security best practices 1. Expose APIs over HTTPS 2. Create and distribute certificates and keys 3. Implement secure property management 4. Secure sensitive data in Mule applications 5. Implement TLS mutual authentication
Expose Production-Ready Anypoint Platform Managed APIs	13%	- Manage APIs with Anypoint Platform 1. Implement API versioning 2. Implement server-side API caching 3. Configure API policies 4. Implement HTTP callbacks 5. Request and manage API access
Implement Monitorable Mule Applications	15%	- Implement monitoring and logging 1. Implement monitoring dashboards and alerts 2. Change log levels dynamically 3. Expose health check endpoints 4. Configure and evaluate application logs
Implement Maintainable and Modular Mule Applications and Their Maven Builds	25%	- Implement modular Mule application structures 1. Implement Maven-based automated deployments 2. Execute MUnit tests with Maven 3. Optimize Maven build configurations 4. Create custom API rules 5. Implement unit testing with MUnit framework
Implement Performant and Reliable Mule Applications	27%	- Optimize reliability and performance 1. Validate assertions using validation modules 2. Build fault-tolerant message processing 3. Implement performant API invocations 4. Implement asynchronous processing 5. Implement ObjectStore persistence

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Salesforce Certified MuleSoft Developer II Sample Questions (Q20-Q25):

NEW QUESTION # 20
An order processing system is composed of multiple Mule application responsible for warehouse, sales and shipping. Each application communication using Anypoint MQ. Each message must be correlated against the original order ID for observability and tracing.
How should a developer propagate the order ID as the correlation ID across each message?

A. Use the default correlation ID, Anypoint MQ will sutomatically propagate it.
B. Use the underlying HTTP request of Anypoint MQ to set the 'X-CORRELATION_ID' header to the order ID
C. Set a custom Anypoint MQ user property to propagate the order ID and set the correlation ID in the receiving applications.
D. Wrap all Anypoint MQ Publish operations within a With CorrelationID scope from the Tracing module, setting the correlation ID to the order ID

Answer: D

Explanation:
To propagate the order ID as the correlation ID across each message using Anypoint MQ, the developer should wrap all Anypoint MQ Publish operations within a With CorrelationID scope from the Tracing module, setting the correlation ID to the order ID. The With CorrelationID scope allows setting a custom correlation ID for any event that occurs within it. The Tracing module also enables distributed tracing across different Mule applications and services using Anypoint Monitoring. Reference: https://docs.mulesoft.com/tracing-module/1.0/tracing-module-reference#with-correlation-id-scope https://docs.mulesoft.com/tracing-module/1.0/tracing-module-concepts

NEW QUESTION # 21
A Mule application uses API autodiscovery to access and enforce policies for a RESTful implementation.
What needs to be configured for the flowRef attribute of the autodiscovery global element?

A. Any of the APIkit generated implementation flows
B. The name of the flow that has APIkit Console to receive all incoming RESTful operation requests
C. The name of the flow that has HTTP Listener to receive all incoming RESTful operation requests
D. Nothing because flowRef is an optional attribute which can be passed during runtime

Answer: C

NEW QUESTION # 22
A Mule application deployed to multiple Cloudhub 2.0 replicas needs to temporarily persist large files over 10MB between flow executions, and routinely needs to query whether the file data exists on separate executions.
How can this be achieved?

A. Store the key and full contents of the file, caching the filename and location between requests
B. Use an in-memory Object Store
C. Store the contents of the file on separate storage, and store the key and location of the file Object using Object Store v2
D. Store the key and full contents of the file in an Object Store

Answer: C

Explanation:
To temporarily persist large files over 10MB between flow executions, and routinely query whether the file data exists on separate executions, the developer should store the contents of the file on separate storage, and store the key and location of the file object using Object Store v2. This way, the developer can avoid storing large files in memory or exceeding the size limit of Object Store v2 (10MB per object). The developer can also use Object Store v2 operations to query, retrieve, or delete the file object by its key. Reference: https://docs.mulesoft.com/object-store/osv2-faq#can-i-store-files-in-object-store-v2

NEW QUESTION # 23
A scatter-gather router is configured with four routes:Route A, B, C and D.
Route C false.

A. Error,errorMesage.payload.results ['2']
B. Payload failures['2']
C. Payload ['2']
D. Error,errorMessage,payload.failures['2']

Answer: A

Explanation:
The result of accessing route C failure is Error,errorMessage,payload.failures['2']. This is because a scatter-gather router returns an aggregated message that contains an array of results from each route and an array of failures from each route. The failures array contains error objects with information about each failed route execution. To access route C failure, which is the third route (index 2), the developer needs to use Error.errorMessage.payload.failures['2'] expression. Reference: https://docs.mulesoft.com/mule-runtime/4.3/scatter-gather-reference#scatter-gather-output

NEW QUESTION # 24
When implementing a synchronous API where the event source is an HTTP Listener, a developer needs to return the same correlation ID back to the caller in the HTTP response header.
How can this be achieved?

A. Enable the CorrelationID checkbox in the HTTP Listener configuration
B. No action is needed as the correlation ID is returned to the caller in the response header by default
C. Enable the auto-generate CorrelationID option when scaffolding the flow
D. Configure a custom correlation policy

Answer: B

Explanation:
Correlation IDs are part of Mule event processing and provide the primary mechanism for tracing an execution across application components. Mule first examines the source message for a correlation identifier.
For an HTTP Listener request, an incoming X-CORRELATION-ID or MULE_CORRELATION_ID header can establish the Mule event's correlation ID. If the source does not provide one, Mule generates a unique correlation ID for the event.
For the synchronous HTTP Listener scenario tested by the MuleSoft Developer II curriculum, the same correlation context is associated with the request-response execution, so no special API policy, scaffolding option, or Listener "CorrelationID" checkbox is required to satisfy the stated requirement.
Options B and C describe configuration controls that are not part of the normal HTTP Listener/APIkit scaffolding model. A custom correlation policy would only introduce unnecessary complexity where Mule's runtime correlation mechanism already handles the event correlation lifecycle.
The broader operational principle is important: correlation IDs should remain stable for the execution being traced so that request handling, logs, downstream processing, and the associated synchronous interaction can be related during production diagnostics.
Reference topics: Mule Event; Correlation ID; HTTP Listener; X-CORRELATION-ID; distributed tracing and observability.
Official documentation: https://docs.mulesoft.com/mule-runtime/latest/correlation-id

NEW QUESTION # 25
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