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| Section | Weight | Objectives |
|---|---|---|
| Secure Data at Rest and in Transit | 20% | - Expose and invoke APIs over HTTPS - Manage keys and certificates - Manage secure environment properties - Implement security policies |
| Implement Maintainable and Modular Mule Applications and Maven Builds | 25% | - Execute tests with Maven - Create reusable libraries - Build custom policies and processors - Implement automated deployment - Modularize applications and builds |
| Design and Implement API-led Connectivity | 13% | - Implement API autodiscovery - Implement server-side caching - Implement HTTP callbacks/webhooks |
| Implement Monitorable Mule Applications | 15% | - Expose health check endpoints - Monitor applications and runtimes - Implement message correlation - Implement logging and log management |
| Implement Performant and Reliable Mule Applications | 27% | - Use ObjectStore for persistence - Implement reliable messaging patterns - Optimize performance and throughput - Validate messages and payloads - Handle HTTP API invocations and errors |
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質問 # 26
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?
Exhibit:
正解：C
解説：
Scatter-Gather normally expects all routes to complete successfully before combining their results. If the United Airlines route times out and that error escapes the route, Scatter-Gather raises a MULE:
COMPOSITE_ROUTING error instead of continuing normally to the downstream Transform Message. That behavior prevents the required partial-success response.
The correct design is to handle failure inside the affected Scatter-Gather route. Each Flow Reference can be wrapped in a Try scope, with the timeout or relevant connector error handled using On Error Continue. The handler can replace the failed route's payload with a neutral/default value such as an empty string. The route is then considered successfully handled, allowing Scatter-Gather to consolidate the successful Delta response and the default United value and proceed to the concatenation step.
MuleSoft documents this exact Scatter-Gather behavior: when a route's Try scope successfully handles an error with on-error-continue, Scatter-Gather completes and passes the combined events onward. If on-error- propagate is used, the route remains failed and Scatter-Gather produces a composite-routing error.
Reference topics: Scatter-Gather Router; Try Scope; On Error Continue; partial results; MULE:
COMPOSITE_ROUTING.
Official documentation: https://docs.mulesoft.com/mule-runtime/4.3/scatter-gather-concept
質問 # 27
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 according.
Which configuration is required in Anypoint MQ to achieve this publish/subscribe model?
正解：C
解説：
To achieve a publish/subscribe model using Anypoint MQ, where each system receives the same gate change notification event, the developer should publish the gate change notification to an Anypoint MQ exchange, create different Anypoint MQ queues meant for each of the other subscribing systems, and bind the exchange with each of the queues. An exchange is a message routing agent that can send messages to different queues based on predefined criteria. By binding an exchange with multiple queues, each queue receives a copy of every message sent to that exchange. Therefore, each system can subscribe to its own queue and receive every gate change notification event. Reference: https://docs.mulesoft.com/anypoint-mq/3.x/anypoint-mq-exchanges
質問 # 28
Refer to the exhibit.
A developer generates the base scaffolding for an API in Anypoint Studio.
Which HTTP status code is returned while testing using the API Kit console if no values are entered in client-secret?
正解：C
解説：
Based on the code snippet and schema.json file below, when testing using the API Kit console if no values are entered in client-secret, HTTP status code 403 (FORBIDDEN) is returned. This is because client-secret is defined as a required header parameter in schema.json file, which means that it must be present in every request. If no values are entered in client-secret, then it is equivalent to omitting this header parameter, which violates the schema and causes APIKit Router to return HTTP status code 403. Reference: https://docs.mulesoft.com/apikit/4.x/apikit-4-headers
質問 # 29
What is the MuleSoft recommended method to encrypt sensitive property data?
正解：C
解説：
The MuleSoft recommended method to encrypt sensitive property data is to use the Secure Properties Tool that comes with Anypoint Studio. This tool allows encrypting properties files with a secret key and then decrypting them at runtime using the same key. The encryption key and sensitive data should be different for each environment to ensure security and avoid accidental exposure of sensitive data. Reference: https://docs.mulesoft.com/mule-runtime/4.3/secure-configuration-properties
質問 # 30
A Mule application uses API autodiscovery to access and enforce policies for a RESTful implementation.
What needs to be configured for the flowRef attribute of the autodiscovery global element?
正解：B
解説：
API Autodiscovery pairs a Mule API implementation with an API instance managed in API Manager. The global autodiscovery element requires the API instance identifier and a flowRef that identifies the flow where API Gateway policy enforcement begins.
MuleSoft explicitly states that flowRef must reference a flow containing an HTTP Listener. The referenced flow represents the inbound API entry point receiving the requests against which API Manager policies are enforced. Connectors that merely use HTTP internally are not sufficient for this requirement.
In an APIkit-generated application, the appropriate flow is typically the main API flow that contains the HTTP Listener and APIkit Router. Individual generated resource/operation flows execute later after routing; they are not the primary inbound policy-enforcement point. Similarly, the APIkit Console flow is intended for interactive API documentation/testing and should not be used as the flowRef for production policy enforcement.
The attribute is not simply supplied dynamically at runtime. It is part of the Mule application's Autodiscovery configuration and identifies the exact listener-based flow paired to API Manager.
Therefore, flowRef must identify the flow containing the HTTP Listener that receives the REST API's incoming requests.
Reference topics: API Autodiscovery; api-gateway:autodiscovery; flowRef; HTTP Listener; API Manager policy enforcement.
Official documentation: https://docs.mulesoft.com/mule-gateway/mule-gateway-config-autodiscovery-mule4
質問 # 31
......
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