Mule-Dev-301 Fragen Antworten, Mule-Dev-301 Fragen&Antworten

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Salesforce Mule-Dev-301 Exam Syllabus Topics:

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

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Salesforce Certified MuleSoft Developer II Mule-Dev-301 Prüfungsfragen mit Lösungen (Q21-Q26):

21. Frage
Refer to the exhibit.
What required changes can be made to give a partial successful response in case the United Airlines API returns with a timeout?

Antwort: D

Begründung:
To give a partial successful response in case the United Airlines API returns with a timeout, the developer should add a Scatter-Gather component inside a Try scope, and set the payload to a default value 'Error' inside the error handler using the On Error Continue scope. A Scatter-Gather component allows sending multiple requests concurrently and aggregating the responses into an array. A Try scope allows handling errors that occur within it using an error handler. An On Error Continue scope allows continuing the flow execution after handling an error. Therefore, by using these components, the developer can send requests to both APIs in parallel, handle any timeout errors from United Airlines API, and return a partial response with a default value for that API. Reference: https://docs.mulesoft.com/mule-runtime/4.3/scatter-gather-concept https://docs.mulesoft.com/mule-runtime/4.3/try-scope-concept https://docs.mulesoft.com/mule-runtime/4.3/on-error-continue-concept


22. Frage
Which properties are mandatory on the HTTP Connector configuration in order to use the OAuth 2.0 Authorization Code grant type for authentication?

Antwort: C

Begründung:
To use the OAuth 2.0 Authorization Code grant type for authentication, the HTTP Connector configuration requires the following properties: token URL, authorization URL, client ID, client secret, and local callback URL. The token URL is the endpoint of the authorization server that provides access tokens. The authorization URL is the endpoint of the authorization server that initiates the user consent flow. The client ID and client secret are the credentials of the Mule application registered with the authorization server. The local callback URL is the endpoint of the Mule application that receives the authorization code from the authorization server. Reference: https://docs.mulesoft.com/http-connector/1.6/http-authentication#oauth-2-0


23. Frage
An organization uses CloudHub to deploy all of its applications.
How can a common-global-handler flow be configured so that it can be reused across all of the organization's deployed applications?

Antwort: C

Begründung:
Create a common-global-error-handler flow inside the plugin project.
Use this plugin as a dependency in all Mule applications
D.
Create a Mule daman project.
Create a common-global-error-handler flow inside the domain project.
Use this domain project as a dependency.
Explanation:
To configure a common-global-handler flow that can be reused across all of the organization's deployed applications, the developer should create a Mule Plugin project, create a common-global-error-handler flow inside the plugin project, and use this plugin as a dependency in all Mule applications. This way, the developer can import the common-global-error-handler flow in any application that needs it and avoid duplicating the error handling logic. Reference: https://docs.mulesoft.com/mule-runtime/4.3/error-handling#global-error-handler


24. 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?

Antwort: B

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


25. Frage
A mule application exposes and API for creating payments. An Operations team wants to ensure that the Payment API is up and running at all times in production.
Which approach should be used to test that the payment API is working in production?

Antwort: D

Begründung:
To test that the payment API is working in production, the developer should create a health check endpoint that listens on a separate port and uses a separate HTTP Listener configuration from the API. This way, the developer can isolate the health check endpoint from the API traffic and avoid affecting the performance or availability of the API. The health check endpoint should return a simple response that indicates the status of the API, such as OK or ERROR. Reference: https://docs.mulesoft.com/api-functional-monitoring/afm-create-monitor#create-a-monitor


26. Frage
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