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Salesforce Mule-Dev-301 Exam Syllabus Topics:

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

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Salesforce Certified MuleSoft Developer II Mule-Dev-301 Prüfungsfragen mit Lösungen (Q20-Q25):

20. Frage
Refer to the exhibit.

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?

A. The Mule flow will execute successfully with status code 200m and a response will display the message '' Age in years which must equal to or greater than zero.''
B. The Mule flow will execute successfully with status code 204
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 throw the exception 'JSON:SCHEMA_NOT_HONOURED

Antwort: D

Begründung:
Based on the code snippet, schema.json file, and payload below, the outcome of the given code snippet when a request is sent with the payload is that the Mule flow will throw the exception 'JSON:SCHEMA_NOT_HONOURED'. This is because the payload does not conform to the schema.json file, which specifies that age must be a number greater than or equal to zero. The payload has age as a string with a negative value, which violates the schema. Therefore, the validate-schema operation throws an error with type 'JSON:SCHEMA_NOT_HONOURED'. Reference: https://docs.mulesoft.com/json-module/1.1/json-validate-schema

21. Frage
Which plugin or dependency is required to unit test modules created with XML SDK?

A. XMLUnit
B. MUnit Extensions Maven plugin
C. JUnit
D. MUnit Maven plugin

Antwort: B

Begründung:
Modules and connectors are extensions to the Mule runtime rather than ordinary Mule applications. Their tests therefore require the extension-oriented MUnit test infrastructure, represented by the MUnit Extensions Maven Plugin (munit-extensions-maven-plugin).
MuleSoft's XML SDK documentation shows that an XML SDK project includes MUnit tests under src/test
/munit, and building the module runs those tests as part of the module build lifecycle. MuleSoft's connector- testing documentation explicitly references munit-extensions-maven-plugin when configuring tests for Mule extensions and modules.
The standard MUnit Maven Plugin is principally associated with executing MUnit suites for Mule applications in Maven/CI environments. XML SDK modules require testing in the extension/module context, which is why the extensions variant is the relevant plugin.
JUnit is a Java testing framework and does not by itself provide the Mule runtime and extension environment required to execute XML SDK module operations. XMLUnit, meanwhile, is designed for XML comparison and validation; it is not the Mule module-testing framework.
Therefore, the correct Maven component for unit testing XML SDK-created modules is the MUnit Extensions Maven Plugin.
Reference topics: XML SDK; MUnit; module testing; munit-extensions-maven-plugin; Mule extension build lifecycle.
Official documentation: https://docs.mulesoft.com/mule-sdk/latest/xml-sdk Official documentation: https://docs.mulesoft.com/mule-sdk/latest/partner-connector-upgrade

22. Frage
Which pattern can a web API use to notify its client of state changes as soon as they occur?

A. Shared database trigger
B. HTTP Webhook
C. Schedule Event Publisher
D. ETL data load

Antwort: B

Begründung:
An HTTP webhook provides event-driven notification from an API or service to a client-controlled HTTP endpoint. Instead of requiring the client to repeatedly poll the API for changes, the client registers or supplies a callback URL. When the relevant state transition occurs, the service immediately issues an HTTP request- commonly POST-to that endpoint.
This architecture closely matches the requirement to notify the client as soon as the state change occurs.
MuleSoft-supported connectors expose the same webhook model. For example, MuleSoft's connector documentation describes webhook endpoints as URLs that receive notifications about configured events, demonstrating the callback-based semantics of the pattern.
An ETL load is primarily designed for batch-oriented movement and transformation of data and would introduce unnecessary latency. A scheduled event publisher is still time based, meaning notification occurs according to a schedule rather than directly in response to the state transition. A shared database trigger tightly couples applications through the persistence tier and does not constitute an API notification mechanism.
A webhook therefore creates a clean event-driven API contract: the producing service detects the event and actively notifies the registered consumer endpoint.
Reference topics: HTTP webhooks; event-driven API integration; callback endpoints; asynchronous notifications; API consumer decoupling.
Official documentation: https://docs.mulesoft.com/stripe-connector/latest/stripe-connector-reference

23. Frage
A Mule implementation uses a HTTP Request within an Unit Successful scope to connect to an API.
How should a permanent error response like HTTP:UNAUTHORIZED be handle inside Until Successful to reduce latency?

A. Put the HTTP Request inside a try scope in Unit Successful.
In the error handler, use On Error Continue to catch permanent errors like HTTP UNAUTHORIZED.
B. In Until Successful configuration, set the retry count to 1 for error type HTTP: UNAUTHORIZED.
C. Configure retrying until a MULERETRY_EXHAUSTED error is raised or the API responds back with a successful response.
D. Put the HTTP Request inside a try scope in Unit Successful.
In the error handler, use On Error Propagate to catch permanent errors like HTTP UNAUTHORIZED.

Antwort: A

Begründung:
To handle a permanent error response like HTTP:UNAUTHORIZED inside Until Successful, the developer should put the HTTP Request inside a try scope in Unit Successful, and use On Error Continue to catch permanent errors like HTTP UNAUTHORIZED in the error handler. This way, the developer can avoid retrying requests that will always fail due to a permanent error, and reduce latency. On Error Continue allows the flow to continue processing after handling the error. Reference: https://docs.mulesoft.com/mule-runtime/4.3/until-successful-scope https://docs.mulesoft.com/mule-runtime/4.3/on-error-continue-concept

24. Frage
A Mule application uses API autodiscovery to access and enforce policies for a RESTful implementation.

A. The name of the flow that has HTTP listener to receive all incoming RESTful operation requests
B. The name of the flow that has APlkit Console to receive all incoming RESTful operation requests.
C. Northing because flowRef is an optional attribute which can be passed runtime
D. Any of the APIkit generate implement flows

Antwort: A

Begründung:
To use API autodiscovery to access and enforce policies for a RESTful implementation, flowRef must be set to the name of the flow that has HTTP listener to receive all incoming RESTful operation requests. This way, API autodiscovery can identify the API implementation and associate it with the corresponding API specification and policies in API Manager. The flow that has HTTP listener is usually the main flow that contains the APIKit Router. Reference: https://docs.mulesoft.com/api-manager/2.x/api-auto-discovery-new-concept#flowref

25. Frage
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