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Salesforce Mule-Dev-301 Exam Syllabus Topics:

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

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Salesforce Certified MuleSoft Developer II Mule-Dev-301 Prüfungsfragen mit Lösungen (Q23-Q28):

23. Frage
A company with MuleSoft Titanium develops a Salesforce System API using MuleSoft out-of-the-box Salesforce Connector and deploys the API to CloudHub.
Which steps provide the average number of requests and average response time of the Salesforce Connector?

A. Access Anypoint Monitoring's built-in dashboard
Seclect a resource.
Create a custom dashboard to retrieve the information.
B. Access Anypoint Monitoring built-in dashboard.
Select a resource.
Locate the information under Log Manager < Raw Data.
C. Change the API Implementation to capture the information in the log.
Retrieve the information from the log file.
D. Access Anypoint Monitoring's built-in dashboard. Select a resource.
Locate the information under the Connectors tab.

Antwort: D

Begründung:
To get the average number of requests and average response time of the Salesforce Connector, the developer should access Anypoint Monitoring's built-in dashboard, select a resource (such as an application or an API), and locate the information under the Connectors tab. The Connectors tab shows metrics for each connector used by the resource, such as average requests per minute, average response time, and failures. Reference: https://docs.mulesoft.com/monitoring/built-in-dashboard-reference

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?

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

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

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

Antwort: C

Begründung:
A web API can use HTTP Webhook to notify its client of state changes as soon as they occur. A webhook is an HTTP callback that allows an API to send real-time notifications to another system or application when an event happens. The client registers a URL with the API where it wants to receive notifications, and then the API sends an HTTP request to that URL with information about the event. Reference: https://docs.mulesoft.com/connectors/webhook/webhook-connector

26. 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?

A. Create a health check endpoint that reuses the same port number and HTTP Listener configuration as the API itself
B. Configure the application to send health data to an external system
C. Monitor the Payment API directly sending real customer payment data
D. Create a health check endpoint that listens on a separate port and uses a separate HTTP Listener configuration from the API

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

27. Frage
A scatter-gather router is configured with four routes:Route A, B, C and D.
Route C false.

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

Antwort: B

Begründung:
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

28. Frage
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