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| Section | Weight | Objectives |
|---|---|---|
| Implement Performant and Reliable Mule Applications | 27% | - Optimize reliability and performance
|
| Implement Monitorable Mule Applications | 15% | - Implement monitoring and logging
|
| Secure Data at Rest and in Transit | 20% | - Implement security best practices
|
| Expose Production-Ready Anypoint Platform Managed APIs | 13% | - Manage APIs with Anypoint Platform
|
| Implement Maintainable and Modular Mule Applications and Their Maven Builds | 25% | - Implement modular Mule application structures
|
>> Mule-Dev-301 Exam Reviews <<
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NEW QUESTION # 24
A scatter-gather router is configured with four routes: Route A, B, C and D.
Route C fails.
Which expression allows access to the failing route so that it can be compensated?
Answer: A
Explanation:
When any route within Scatter-Gather fails, Mule raises a MULE:COMPOSITE_ROUTING error after the routes complete. The information associated with each route is retained in the error message payload. This payload contains separate collections for failures and results, indexed according to the route positions.
Routes are zero-indexed for this structure: Route A corresponds to index 0, Route B to index 1, Route C to index 2, and Route D to index 3. Because Route C failed, its failure information is therefore available from the failures structure at index 2.
Critically, this data belongs to the Mule error's errorMessage.payload; it is not simply the current event payload. Consequently, payload.failures[2] and payload[2] address the wrong structure. Likewise, error.
errorMessage.payload.results[2] refers to the successful-results collection; for a failed route, the relevant object is stored under failures.
MuleSoft's Scatter-Gather documentation demonstrates the same mechanism, accessing failed route information through expressions such as error.errorMessage.payload.failures['0'] and successful route output through the corresponding results collection.
Reference topics: Scatter-Gather Error Handling; MULE:COMPOSITE_ROUTING; Route Results and Failures; Compensation Logic.
Official documentation: https://docs.mulesoft.com/mule-runtime/4.6/scatter-gather-concept
NEW QUESTION # 25
The flow is invoicing a target API. The API's protocol is HTTPS. The TLS configuration in the HTTP Request Configuration global element is set to None. A web client submits a request to http:localhost:8081/vehicles.
If the certificate of the target API is signed by a certificate authority (CA), what is true about the HTTP Request operation when the flow executes?
Answer: D
Explanation:
The HTTP Request operation will use the default truststore of the JRE to validate the certificate of the target API. If the CA's certificate is present in the truststore, the operation will succeed. Otherwise, it will fail with a handshake exception. Reference: https://docs.mulesoft.com/mule-runtime/4.3/tls-configuration#tls-default
NEW QUESTION # 26
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?
Answer: C
Explanation:
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
NEW QUESTION # 27
A custom policy needs to be developed to intercept all cutbound HTTP requests made by Mule applications.
Which XML element must be used to intercept outbound HTTP requests?
Answer: C
Explanation:
The http-policy:processor element is used to intercept outbound HTTP requests made by Mule applications. It allows customizing the request before it is sent to the target API and modifying the response after it is received from the target API. Reference: https://docs.mulesoft.com/api-manager/2.x/policy-mule4-custom-policy#policy-xml-file
NEW QUESTION # 28
When a client and server are exchanging messages during the mTLS handshake, what is being agreed on during the cipher suite exchange?
Answer: C
Explanation:
A cipher suite is a set of cryptographic algorithms that are used to secure the communication between a client and a server. A cipher suite consists of four components: a key exchange algorithm, an authentication algorithm, an encryption algorithm, and a message authentication code (MAC) algorithm. During the cipher suite exchange, the client and the server agree on which encryption algorithm to use for encrypting and decrypting the data. Reference: https://docs.mulesoft.com/mule-runtime/4.3/tls-configuration#cipher-suites
NEW QUESTION # 29
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