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| Section | Weight | Objectives |
|---|---|---|
| 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 Performant and Reliable Mule Applications | 27% | - Optimize reliability and performance
|
| Implement Maintainable and Modular Mule Applications and Their Maven Builds | 25% | - Implement modular Mule application structures
|
| Implement Monitorable Mule Applications | 15% | - Implement monitoring and logging
|
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質問 # 34
Mule application A is deployed to CloudHub and is using Object Store v2. Mule application B is also deployed to CloudHub.
Which approach can Mule application B use to remove values from Mule application A's Object Store?
正解:A
解説:
Object Store Connector provides Mule operations for interacting with object stores associated with the application in which the connector executes. It is not the mechanism for one independently deployed CloudHub application to directly operate on another application's Object Store v2 data.
For cross-application administration and access, MuleSoft provides the Object Store v2 REST APIs. These APIs support listing object stores and keys, storing and retrieving key-value pairs, and explicitly deleting keys and their values. Calls are authenticated with an Anypoint Platform bearer token and address the required organization, environment, store, partition, and key. MuleSoft's documented DELETE operation removes a specified key-value pair from the targeted Object Store v2 partition.
The CloudHub REST API manages CloudHub resources and deployments rather than application Object Store entries. The CloudHub Connector likewise does not provide the direct cross-application Object Store v2 deletion capability described here.
Therefore, application B can invoke the Object Store v2 REST API, subject to appropriate authorization and identification of application A's relevant Object Store resources, to remove values from that store.
Reference topics: Object Store v2; Object Store v2 REST APIs; partitions and keys; DELETE operations; CloudHub persistence.
Official documentation: https://docs.mulesoft.com/object-store/osv2-apis
質問 # 35
A Mule application deployed to multiple Cloudhub 2.0 replicas needs to temporarily persist large files over 10MB between flow executions, and routinely needs to query whether the file data exists on separate executions.
How can this be achieved?
正解:D
解説:
To temporarily persist large files over 10MB between flow executions, and routinely query whether the file data exists on separate executions, the developer should store the contents of the file on separate storage, and store the key and location of the file object using Object Store v2. This way, the developer can avoid storing large files in memory or exceeding the size limit of Object Store v2 (10MB per object). The developer can also use Object Store v2 operations to query, retrieve, or delete the file object by its key. Reference: https://docs.mulesoft.com/object-store/osv2-faq#can-i-store-files-in-object-store-v2
質問 # 36
Refer to the exhibits.
A Mule application contains two policies: Policy A and Policy B. Policy A has order 1, and Policy B has order 2. Policy A, Policy B, and a flow are defined by the configurations below.
When an HTTP request arrives at the Mule application's endpoint, what will be the execution order?
Exhibit:
正解:B
解説:
Mule Gateway source policies behave as nested interceptors around the application flow. Policy order determines the sequence in which the request-side portions execute. Because Policy A has order 1 and Policy B has order 2, Policy A is entered first. Therefore, A1 executes before Mule reaches Policy A's http-policy:
execute-next.
The execute-next instruction transfers control to the next policy, so Policy B begins and executes B1. Policy B's own execute-next then transfers control into the application flow, where F1 executes.
After the application flow completes, processing unwinds in reverse order. Control first returns to Policy B, causing B2 to execute. It then returns to Policy A, where A2 executes. The complete sequence is therefore A1
# B1 # F1 # B2 # A2.
MuleSoft's Custom Policy Development Reference documents this exact execution model, including an example with policies A and B using precisely the same order and execute-next arrangement. The policy with the lower order executes its inbound section first, while post-processing executes in reverse nesting order.
Reference topics: Mule Gateway Custom Policies; Source Policy Execution; http-policy:execute-next; Policy Ordering.
Official documentation: https://docs.mulesoft.com/mule-gateway/policies-custom-mule-4-reference
質問 # 37
Refer to the exhibits.
Based on the code snippet, schema.json file, and payload below, what is the outcome of the given code snippet when a request is sent with the payload?
Exhibits:
正解:B
解説:
The flow passes the incoming HTTP request payload directly to the JSON Module's Validate schema operation. The referenced schema.json defines the age property as an integer with "minimum": 0. However, the request shown in the exhibit contains:
"age": -1
This violates the schema because -1 is below the permitted minimum. MuleSoft specifies that the JSON Module's Validate schema operation compares the input content with the supplied JSON Schema and, when the document does not conform, raises JSON:SCHEMA_NOT_HONOURED.
Consequently, normal flow execution stops at the validation operation unless an error handler explicitly consumes the exception. The Logger positioned after the validation operation is not executed in this flow because validation fails first.
The schema's description text-"Age in years which must be equal to or greater than zero."-is metadata describing the property; it does not automatically become a successful HTTP response. Similarly, the request payload is not returned through a successful normal path after the schema violation.
Therefore, because the supplied age value violates minimum: 0, Mule raises JSON:
SCHEMA_NOT_HONOURED.
Reference topics: JSON Module; Validate Schema operation; JSON Schema constraints; minimum; JSON:
SCHEMA_NOT_HONOURED.
Official documentation: https://docs.mulesoft.com/json-module/latest/json-schema-validation
質問 # 38
A Mule application deployed to a standardalone Mule runtime uses VM queues to publish messages to be consumed asynchronously by another flow.
In the case of a system failure, what will happen to in-flight messages in the VM queues that have been consumed?
正解:B
解説:
In case of a system failure, in-flight messages in persistent VM queues that have been consumed will be processed after the system comes online. This is because persistent VM queues store messages on disk and guarantee delivery even if there is a system crash or restart. Therefore, any in-flight messages that have been consumed but not processed will be recovered from disk and processed when the system is back online. Reference: https://docs.mulesoft.com/mule-runtime/4.3/vm-connector#persistent-queues
質問 # 39
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