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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Secure Data at Rest and in Transit | 20% | - Manage secure environment properties - Manage keys and certificates - Expose and invoke APIs over HTTPS - Implement security policies |
| Topic 2: Implement Performant and Reliable Mule Applications | 27% | - Handle HTTP API invocations and errors - Optimize performance and throughput - Use ObjectStore for persistence - Implement reliable messaging patterns - Validate messages and payloads |
| Topic 3: Implement Monitorable Mule Applications | 15% | - Monitor applications and runtimes - Implement message correlation - Expose health check endpoints - Implement logging and log management |
| Topic 4: Design and Implement API-led Connectivity | 13% | - Implement API autodiscovery - Implement HTTP callbacks/webhooks - Implement server-side caching |
| Topic 5: Implement Maintainable and Modular Mule Applications and Maven Builds | 25% | - Modularize applications and builds - Implement automated deployment - Build custom policies and processors - Execute tests with Maven - Create reusable libraries |
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NEW QUESTION # 54
Refer to the exhibit.
A Mute Object Store is configured with an entry TTL of one second and an expiration interval of 30 seconds.
What is the result of the flow if processing between os'store and os:retrieve takes 10 seconds?
Answer: D
Explanation:
The result of the flow is nullPayload if processing between os:store and os:retrieve takes 10 seconds. This is because the entry TTL of the object store is one second, which means that any stored value expires after one second and is removed from the object store. The expiration interval of 30 seconds only determines how often the object store checks for expired values, but it does not affect the TTL. Therefore, when os:retrieve tries to get the value after 10 seconds, it returns nullPayload because the value has already expired and been removed. Reference: https://docs.mulesoft.com/object-store/osv2-faq#how-does-the-time-to-live-work
NEW QUESTION # 55
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?
Answer: C
Explanation:
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
NEW QUESTION # 56
A healthcare portal needs to validate the token that it sends to a Mule API. The developer plans to implement a custom policy using the HTTP Policy Transform Extension to match the token received in the header from the healthcare portal.
Which files does the developer need to create in order to package the custom policy?
Answer: C
Explanation:
For the Mule 4 custom-policy development model represented by this question, the policy's runtime behavior is implemented in an XML template, while the policy's configurable parameters and metadata are described in a YAML configuration file.
The XML template uses Mule's XML configuration language and policy-specific elements such as http-policy:
proxy, http-policy:source, http-policy:operation, and http-policy:execute-next. In this scenario, the developer can place the header-token inspection and validation behavior in this implementation layer. The accompanying YAML file exposes configurable policy parameters to API Manager and provides the metadata needed for policy configuration.
MuleSoft's custom-policy development reference identifies an XML template and YAML file as core policy project artifacts; the complete project additionally contains its POM, Mule artifact descriptor, and any optional resources.
A ZIP file is not the source artifact pair used to define the policy. Similarly, a generic JSON properties file is not a replacement for the implementation template in this Mule 4 custom-policy model.
Thus, among the available combinations, the XML policy template together with the YAML configuration file is the required pair.
Reference topics: Mule Gateway custom policies; XML policy templates; YAML policy configuration; HTTP Policy Transform Extension.
Official documentation: https://docs.mulesoft.com/mule-gateway/policies-custom-mule-4-reference
NEW QUESTION # 57
A Mule application needs to invoke an API hosted by an external system to initiate a process. The external API takes anywhere between one minute and 24 hours to complete its process.
Which implementation should be used to get response data from the external API after it completes processing?
Answer: D
Explanation:
A process that can require up to 24 hours is inherently asynchronous. The initiating Mule application should not keep an HTTP connection open until the remote system completes. Instead, Mule should initiate the process, return or continue independently, and expose an HTTP callback endpoint that the external system invokes when processing finishes.
The callback URL is registered with the external system so that completion data can be pushed back to Mule.
This separates request initiation from completion notification and avoids tying up network connections or execution resources for an unpredictable duration. Callback-based processing is a standard asynchronous integration mechanism; MuleSoft documentation uses callback endpoints extensively where a remote system must later contact a Mule application.
Polling every minute is inefficient over a possible 24-hour interval and can generate large volumes of unnecessary requests. An Async scope does not transform a fundamentally synchronous HTTP request into a
24-hour callback model; the downstream HTTP connection would still be governed by response and connection timeout behavior. Waiting synchronously is even less appropriate.
Therefore, exposing a Mule HTTP callback API and registering it with the external system provides the most scalable and reliable architecture.
Reference topics: asynchronous integration; callback APIs; HTTP Listener; long-running processes; event- driven completion notification.
Official documentation: https://docs.mulesoft.com/http-connector/latest/http-authentication
NEW QUESTION # 58
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?
Answer: D
Explanation:
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
NEW QUESTION # 59
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