Question # 1
A Mule application for processing orders must log the order ID for every log message output.
What is a best practice to enrich every log message with the order ID? | | A. Use flow variables within every logger processor to log the order ID | | B. Set a flow variable and edit the log4/2.xml file to output the variable as part of the message pattern | | C. Create a custom XML SDK component to wrap the logger processor and automatically add the order ID within the connector | | D. Use the Tracing module to set logging variables with a Mapped Diagnostic Context |
D. Use the Tracing module to set logging variables with a Mapped Diagnostic Context
Explanation:
To enrich every log message with the order ID, the developer should use the Tracing module to set logging variables with a Mapped Diagnostic Context (MDC). The Tracing module allows adding custom key-value pairs to log messages using MDC variables. The developer can use Set Logging Variables operation to set the order ID as an MDC variable and then use it in any logger processor within the same thread or event.
References:
https://docs.mulesoft.com/tracing-module/1.0/tracing-module-reference#set-logging-variables
Question # 2
Which configurations are required for HTTP Listener to enable mTLS authentication? | | A. Set an appropriate reconnection strategy and use persistent connections for the listener | | B. Set an appropriate keystore configuration and use persistent connections for the listener | | C. Set an appropriate keystore and truststore configuration for the listener | | D. Set an appropriate truststore configuration and reconnection strategy for the listener |
C. Set an appropriate keystore and truststore configuration for the listener
To enable mTLS authentication for HTTP Listener, the developer needs to set an appropriate keystore and truststore configuration for the listener. The keystore contains the certificate and private key of the Mule application that are used to prove its identity to clients. The truststore contains the certificates of trusted clients that are allowed to access the Mule application.
References:
https://docs.mulesoft.com/mule-runtime/4.3/tls-configuration#mutual-authentication
Question # 3
When implementing a synchronous API where the event source is an HTTP Listener, a developer needs to return the same correlation ID back to the caller in the HTTP response header. How can this be achieved? | | A. Enable the auto-generate CorrelationID option when scaffolding the flow | | B. Enable the CorrelationID checkbox in the HTTP Listener configuration | | C. Configure a custom correlation policy | | D. NO action is needed as the correlation ID is returned to the caller in the response header by default |
D. NO action is needed as the correlation ID is returned to the caller in the response header by default
Explanation:
When implementing a synchronous API where the event source is an HTTP Listener, Mule automatically propagates some message attributes between flows via outbound and inbound properties. One of these attributes is correlation ID, which is returned to the caller in the response header by default as MULE_CORRELATION_ID.
References:
https://docs.mulesoft.com/mule-runtime/4.3/about-mule-message#message-attributes
Question # 4
A company deploys 10 public APIs to CloudHub. Each API has its individual health endpoint defined. The platform operation team wants to configure API Functional Monitoring to monitor the health of the APIs periodically while minimizing operational overhead and cost.
How should API Functional Monitoring be configured? | | A. From one public location with each API in its own schedule | | B. From one private location with all 10 APIs in a single schedule | | C. From one public location with all 10 APIs in a single schedule | | D. From 10 public locations with each API in its own schedule |
C. From one public location with all 10 APIs in a single schedule
Explanation:
To configure API Functional Monitoring to monitor the health of 10 public APIs periodically while minimizing operational overhead and cost, the developer should use one public location with all 10 APIs in a single schedule. A public location is a worker that runs in a CloudHub shared environment, which is cheaper and easier to maintain than a private location. A single schedule allows running all 10 APIs tests at the same time and frequency, which reduces complexity and resource consumption.
References:
https://docs.mulesoft.com/functional-monitoring/fm-create-monitor#create-a-monitor
Question # 5
Which statement is true when using XML SDK for creating custom message processors? | | A. Properties are fields defined by an end user of the XML SDK component and serve as a global configuration for the entire Mule project in which they are used | | B. An XML SDK provides both inbound and outbound operations | | C. Operations can be reused in recursive calls | | D. All operations are public |
D. All operations are public
Explanation:
When using XML SDK for creating custom message processors, all operations are public by default and can be used by any Mule application that imports them. There is no way to make an operation private or protected in XML SDK.
References: https://docs.mulesoft.com/mule-sdk/1.1/xml-sdk#operations
Question # 6
A system API that communicates to an underlying MySQL database is deploying to CloudHub. The DevOps team requires a readiness endpoint to monitor all system APIs.
Which strategy should be used to implement this endpoint? | | A. Create a dedicated endpoint that responds with the API status and reachability of the underlying systems | | B. Create a dedicated endpoint that responds with the API status and health of the server | | C. Use an existing resource endpoint of the API | | D. Create a dedicated endpoint that responds with the API status only |
A. Create a dedicated endpoint that responds with the API status and reachability of the underlying systems
Explanation:
To implement a readiness endpoint to monitor all system APIs, the developer should create a dedicated endpoint that responds with the API status and reachability of the underlying systems. This way, the DevOps team can check if the system API is ready to receive requests and if it can communicate with its backend systems without errors.
References:
https://docs.mulesoft.com/mule-runtime/4.3/deployment-strategies#readiness-probes
Question # 7
An API has been developed and deployed to CloudHub Among the policies applied to this API is an allowlist of IP addresses. A developer wants to run a test in Anypoint Studio and does not want any policies applied because their workstation is not included in the allowlist. What must the developer do in order to run this test locally without the policies applied? | | A. Create a properties file specifically for local development and set the API instance ID to a value that is not used in API Manager | | B. Pass in the runtime parameter ‘’-Danpow.platform.gatekeeper=disabled’’ | | C. Deactivate the API in API Manager so the Autodiscovery element will not find the application when it runs in Studio | | D. Run the test as-s, with no changes because the Studio runtime will not attempt to connect to API Manager |
A. Create a properties file specifically for local development and set the API instance ID to a value that is not used in API Manager
To run a test locally without the policies applied, the developer should create a properties file specifically for local development and set the API instance ID to a value that is not used in API Manager. This way, the developer can use different configuration properties for different environments and avoid triggering API autodiscovery when running tests locally. API autodiscovery is a mechanism that associates an API implementation with its corresponding API specification and policies in API Manager based on its API instance ID. By setting this ID to a value that does not exist in API Manager, the developer can prevent API autodiscovery from finding and applying any policies to the local test.
References:
https://docs.mulesoft.com/api-manager/2.x/api-auto-discovery-new-concept#configuring-api-autodiscovery
https://docs.mulesoft.com/mule-runtime/4.3/configuring-properties
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