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MuleSoft Certified Developer - Level 2 (Mule 4) Sample Questions (Q51-Q56):

NEW QUESTION # 51
A Mule API receives a JSON payload and updates the target system with the payload. The developer uses JSON schemas to ensure the data is valid.
How can the data be validation before posting to the target system?

A. Apply the JSON Schema policy in API Manager and reference the correct schema in the policy configuration
B. Add the JSON module dependency and add the validate-schema operation in the flow, configured to reference the schema
C. Use a DataWeave 2.09 transform operation, and at the log of the DataWeave script, add:
%dw 2.0
Import.json-moduls
D. Using the DataWeave if Else condition test the values of the payload against the examples included in the schema

Answer: B

Explanation:
Explanation
To validate the data before posting to the target system, the developer should add the JSON module dependency and add the validate-schema operation in the flow, configured to reference the schema. The JSON module provides a validate-schema operation that validates a JSON payload against a JSON schema and throws an error if the payload is invalid. References:
https://docs.mulesoft.com/json-module/1.1/json-validate-schema

NEW QUESTION # 52
A scatter-gather router is configured with four routes:Route A, B, C and D.
Route C false.

A. Payload failures['2']
B. Payload ['2']
C. Error,errorMesage.payload.results ['2']
D. Error,errorMessage,payload.failures['2']

Answer: C

Explanation:
The result of accessing route C failure is Error,errorMessage,payload.failures['2']. This is because a scatter-gather router returns an aggregated message that contains an array of results from each route and an array of failures from each route. The failures array contains error objects with information about each failed route execution. To access route C failure, which is the third route (index 2), the developer needs to use Error.errorMessage.payload.failures['2'] expression.
References:https://docs.mulesoft.com/mule-runtime/4.3/scatter-gather-reference#scatter-gather-output

NEW QUESTION # 53
Two APIs are deployed to a two-node on-prem cluster. Due to a requirements change, the two APIs must communicate to exchange data asynchronously.

A. It is not possible to use the VM Connector since the APIs are running in a cluster mode and each mode has it own set of VM Queues
B. If the two APIs use the same domain, the VM Connector can be leveraged
C. Instead of using the VM Connector use <flow-ref>directly
D. The VM Connector is used to inter-application communication, so it is not possible to use the VM Connector

Answer: B

Explanation:
Explanation
To communicate asynchronously between two APIs deployed to a two-node on-prem cluster, the developer can use the VM Connector if the two APIs use the same domain. The VM Connector allows passing messages between different Mule applications within a single Mule runtime instance or across different instances using shared memory or persistent storage. If two APIs are deployed under the same domain, they can share resources such as VM queues and communicate asynchronously using VM Connector operations. References:
https://docs.mulesoft.com/mule-runtime/4.3/vm-connector
https://docs.mulesoft.com/mule-runtime/4.3/shared-resources

NEW QUESTION # 54
Which pattern should be used to invoke multiple HTTP APIs in parallel and roll back failed requests in sequence?

A. VM queues as a reliability pattern with error handlers to roll back any requests
B. A database as a transactional outbox and an Until Successful router to retry any requests
C. A Parallel for Each scope with each HTTP request wrapped in a Try scope
D. Scatter-Gather as central Saga orchestrator for all API request with compensating actions for failing routes

Answer: D

Explanation:
Explanation
To invoke multiple HTTP APIs in parallel and roll back failed requests in sequence, the developer should use a Scatter-Gather router as a central Saga orchestrator for all API requests with compensating actions for failing routes. A Scatter-Gather router executes multiple routes concurrently and aggregates the results. A Saga orchestrator coordinates a series of actions across different services and handles failures by executing compensating actions. Therefore, using a Scatter-Gather router as a Saga orchestrator allows invoking multiple HTTP APIs in parallel and rolling back any failed requests in sequence. References:
https://docs.mulesoft.com/mule-runtime/4.3/scatter-gather-concept
https://docs.mulesoft.com/mule-runtime/4.3/saga

NEW QUESTION # 55
Refer to the exhibit.

A Mule application pom.xml configures the Maven Resources plugin to exclude parsing binary files in the project's src/main/resources/certs directory.
Which configuration of this plugin achieves a successful build?

Answer: C

Explanation:
Explanation
To configure the Maven Resources plugin to exclude parsing binary files in the project's src/main/resources/certs directory, option C should be used. This option specifies that any files with .cer or .jks extensions under the certs directory should be excluded from filtering. Filtering is a process of replacing placeholders with actual values in resource files during the build process. Binary files should not be filtered because they may become corrupted or unusable. References:
https://maven.apache.org/plugins/maven-resources-plugin/examples/filter.html
https://maven.apache.org/plugins/maven-resources-plugin/examples/include-exclude.html

NEW QUESTION # 56
......

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MuleSoft Certified Developer - Level 2 (Mule 4) Sample Questions (Q51-Q56):

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