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Salesforce Mule-Dev-301 Exam Syllabus Topics:

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

>> Mule-Dev-301 Probesfragen <<

Mule-Dev-301 Simulationsfragen - Mule-Dev-301 Prüfungsvorbereitung

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Salesforce Certified MuleSoft Developer II Mule-Dev-301 Prüfungsfragen mit Lösungen (Q47-Q52):

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

Antwort: D

Begründung:
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

48. Frage
The flow is invoicing a target API. The API's protocol is HTTPS. The TLS configuration in the HTTP Request Configuration global element is set to None. A web client submits a request to http:localhost:8081/vehicles.

If the certificate of the target API is signed by a certificate authority (CA), what is true about the HTTP Request operation when the flow executes?

A. The HTTP Request operation will succeed if the CA'S certificate is present in the JRE's default keystore
B. The HTTP Request operation will always succeed regardless of the CA
C. The HTTP Request operation will succeed if the CA's certificate is present in the JRE's default truststore.
D. The HTTP Request operation will always fail regardless of the CA

Antwort: C

Begründung:
The HTTP Request operation will use the default truststore of the JRE to validate the certificate of the target API. If the CA's certificate is present in the truststore, the operation will succeed. Otherwise, it will fail with a handshake exception. Reference: https://docs.mulesoft.com/mule-runtime/4.3/tls-configuration#tls-default

49. Frage
A company has been using CI/CD. Its developers use Maven to handle build and deployment activities.
What is the correct sequence of activities that takes place during the Maven build and deployment?

A. Initialize, validate, compile, test, package, verify, install, deploy
B. Validate, initialize, compile, test, package, verify, install, deploy
C. Validate, initialize, compile, test, package, install, verify, deploy
D. Validate, initialize, compile, package, test, install, verify, deploy

Antwort: B

Begründung:
Maven's default lifecycle defines a deterministic sequence of lifecycle phases. When a later lifecycle phase is requested, Maven executes the preceding phases in their established order. For the phases represented in the question, the correct sequence is:
validate # initialize # compile # test # package # verify # install # deploy The validate phase checks that the project is correctly structured and required project information is available.
initialize prepares build state. compile compiles project source code, and test runs tests against the compiled code. package creates the distributable artifact-in a Mule application, typically the deployable Mule application package.
The verify phase performs checks needed to validate package quality. install places the built artifact into the local Maven repository, making it available to other local projects. Finally, deploy copies the final artifact to a remote repository or participates in the configured deployment process.
This ordering matters in MuleSoft CI/CD pipelines because Mule Maven Plugin goals are integrated into Maven's lifecycle rather than replacing Maven's lifecycle semantics. Moving test, verify, or install outside their established positions would represent an invalid lifecycle sequence.
Therefore, C is the correct sequence.
Reference topics: Maven default lifecycle; Mule Maven builds; CI/CD; package, verify, install, and deploy phases.

50. Frage
Which statement is true when using XML SDK for creating custom message processors?

A. Properties are fields defined by an end user of the XML SDK component and serve as a global configuration for the entire Mule project in which they are used
B. An XML SDK provides both inbound and outbound operations
C. Operations can be reused in recursive calls
D. All operations are public

Antwort: A

Begründung:
When using XML SDK for creating custom message processors, all operations are public by default and can be used by any Mule application that imports them. There is no way to make an operation private or protected in XML SDK. Reference: https://docs.mulesoft.com/mule-sdk/1.1/xml-sdk#operations

51. Frage
A Mule application for processing orders must log the order ID for every log message output.
What is a best practice to enrich every log message with the order ID?

A. Use the Tracing module to set logging variables with a Mapped Diagnostic Context
B. Set a flow variable and edit the log4/2.xml file to output the variable as part of the message pattern
C. Use flow variables within every logger processor to log the order ID
D. Create a custom XML SDK component to wrap the logger processor and automatically add the order ID within the connector

Antwort: A

Begründung:
To enrich every log message with the order ID, the developer should use the Tracing module to set logging variables with a Mapped Diagnostic Context (MDC). The Tracing module allows adding custom key-value pairs to log messages using MDC variables. The developer can use Set Logging Variables operation to set the order ID as an MDC variable and then use it in any logger processor within the same thread or event. Reference: https://docs.mulesoft.com/tracing-module/1.0/tracing-module-reference#set-logging-variables

52. Frage
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