Salesforce Mule-Dev-301 Fragen und Antworten, Salesforce Certified MuleSoft Developer II Prüfungsfragen

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Salesforce Mule-Dev-301 Exam Syllabus Topics:

Section	Objectives
Topic 1: Integration and API-led Connectivity	- System, Process, and Experience APIs design - API-led connectivity principles
Topic 2: Error Handling and Troubleshooting	- Exception handling strategies in Mule applications - Debugging and logging techniques
Topic 3: Security and Governance	- API policies and security enforcement - Authentication and authorization mechanisms
Topic 4: Anypoint Platform Development	- Anypoint Studio usage and project structure - Mule application development
Topic 5: Deployment and Testing	- Unit testing and integration testing approaches - Deployment strategies across environments
Topic 6: DataWeave and Data Transformation	- DataWeave scripting and transformations - Mapping, filtering, and payload manipulation

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Mule-Dev-301 Prüfungsaufgaben, Mule-Dev-301 Prüfungsfrage

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Salesforce Certified MuleSoft Developer II Mule-Dev-301 Prüfungsfragen mit Lösungen (Q50-Q55):

50. Frage
A Flight Management System publishes gate change notification events whenever a flight's arrival gate changes. Other systems, including Baggage Handler System, Inflight Catering System, and Passenger Notifications System, must each asynchronously receive the same gate change notification to process the event accordingly.
Which configuration is required in Anypoint MQ to achieve this publish/subscribe model?

A. Publish the gate change notification to an Anypoint MQ queue. Have each client subscribe directly to the queue.
B. Publish the gate change notification to an Anypoint MQ exchange. Have each client subscribe directly to the exchange.
C. Publish the gate change notification to an Anypoint MQ queue. Create different Anypoint MQ exchanges meant for each of the other subscribing systems. Bind the queue with each of the exchanges.
D. Publish the gate change notification to an Anypoint MQ exchange. Create different Anypoint MQ queues meant for each of the other subscribing systems. Bind the exchange with each of the queues.

Antwort: D

Begründung:
Anypoint MQ implements publish/subscribe fan-out by publishing a message to a message exchange and binding multiple queues to that exchange. Each subscribing application consumes from its own queue. As a result, a single gate-change event published by the Flight Management System can be copied to the Baggage Handler, Inflight Catering, and Passenger Notification queues independently.
MuleSoft documents that messages sent to an exchange are delivered to its bound queues and specifically describes exchanges as the mechanism for distributing one published message to multiple applications. A consumer does not directly consume from the exchange; consumption occurs from a queue. In fact, MuleSoft states that attempts to consume from a message exchange are rejected because the destination for consumption must be a queue.
Having all systems consume from one queue would instead create competing consumers: individual messages would normally be processed by one consumer rather than independently delivered to every subscribing system.
The required architecture is therefore: publisher # exchange # multiple bound queues # independent subscribers. This supplies asynchronous fan-out while preserving subscriber isolation and independent consumption.
Reference topics: Anypoint MQ exchanges; queue bindings; publish/subscribe; asynchronous event distribution.
Official documentation: https://docs.mulesoft.com/mq/
Official documentation: https://docs.mulesoft.com/mq/mq-exchanges

51. Frage
The HTTP Request operation raises an HTTP CONNECTIVITY error.
Which HTTP status code and body are returned to the web client?

A. HTTP Status Code:500.
Body 'Error in processing your request
B. HTTP Status Code:200.
Body 'Error in processing your request
C. HTTP Status Code:500.
Body 'Error in processing your request
D. HTTP Status Code:500.
Body 'The HTTP CONNECTIVITY Error description

Antwort: C

Begründung:
When the HTTP Request operation raises an HTTP CONNECTIVITY error, it triggers an on-error-continue handler that sets a payload with 'Error in processing your request'. Since no status code is explicitly set in this handler, it defaults to 500 (INTERNAL SERVER ERROR). Therefore, the web client receives an HTTP response with status code 500 and body 'Error in processing your request'. Reference: https://docs.mulesoft.com/mule-runtime/4.3/error-handling#on-error-continue

52. 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. Select a resource.
Locate the information under the Connectors tab.
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
Seclect a resource.
Create a custom dashboard to retrieve the information.

Antwort: A

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

53. Frage
Which pattern should be used to invoke multiple HTTP APIs in parallel and roll back any failed requests in sequence?

A. A Parallel For Each scope with each HTTP request wrapped in a Try scope
B. VM queues as a reliability pattern with error handlers to roll back any requests
C. A database as a transactional outbox and an Until Successful router to retry any requests
D. Scatter-Gather as central Saga orchestrator for all API requests with compensating actions for failing routes

Antwort: D

Begründung:
The requirement combines two architectural concerns: the downstream HTTP calls must execute concurrently, and completed remote operations must be reversible when another operation fails. Scatter- Gather is the appropriate Mule router for the concurrency requirement because it dispatches the event to multiple routes and executes those routes in parallel.
However, independent HTTP APIs cannot generally participate in a single ACID/XA transaction with Mule.
Once a remote API successfully commits an operation, Mule cannot simply perform a conventional transaction rollback across that service boundary. The appropriate distributed-transaction pattern is therefore a Saga, where successful steps have defined compensating operations that semantically undo their effects when a subsequent step fails.
Scatter-Gather also provides a composite error model. If one or more routes fail, Mule collects successful route results and route failures into a MULE:COMPOSITE_ROUTING error. A centralized orchestration
/error-handling flow can inspect those results and execute compensation logic in the required sequence.
Parallel For Each is designed for elements of a collection, not orchestration of several distinct API operations.
VM queues and transactional-outbox patterns address different reliability concerns and do not directly implement distributed compensation.
Reference topics: Scatter-Gather Router; Composite Routing Errors; Distributed Transactions; Compensating
/Saga Pattern.
Official documentation: https://docs.mulesoft.com/mule-runtime/4.3/scatter-gather-concept

54. Frage
Refer to the exhibit.
What is the result if ''Insecure'' selected as part of the HTTP Listener configuration?

A. The HTTP Listener will trust any certificate presented by the HTTP client
B. Mutual TLS authentication will be enabled between this HTTP Listener and an HTTP client
C. The HTTP listener will only accept HTTP requests
D. The HTTP Lister will accept any unauthenticated request

Antwort: C

Begründung:
Based on the exhibit below, if 'Insecure' is selected as part of the HTTP Listener configuration, the HTTP listener will only accept HTTP requests. This means that no TLS context will be configured for this listener and no encryption or authentication will be applied to incoming requests. The protocol attribute of this listener will be set to HTTP instead of HTTPS. Reference: https://docs.mulesoft.com/http-connector/1.6/http-listener-ref#insecure

55. Frage
......

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