B.

Use ‘’Set Event to pass the input that is needed, and keep the test cases for Flow-1 and Flow-2 Independent

Explanation
To ensure the test suites and test cases written for Flow-1 and Flow-2 will execute successfully, the developer should use a Set Event processor to pass the input that is needed by Flow-2, and keep the test cases for Flow-1 and Flow-2 independent. This way, the developer can isolate the testing of each flow and avoid coupling them together.

References:
https://docs.mulesoft.com/munit/2.3/munit-test-flow

D.

Add the JSON module dependency and add the validate-schema operation in the flow, configured to reference the schema

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

A.

If the two APIs use the same domain, the VM Connector can be leveraged

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

C.

Validate, initialize, compile, test package, verify, install, deploy

Explanation
The correct sequence of activities that takes place during the Maven build and deployment is validate, initialize, compile, test package, verify, install, deploy. These are Maven lifecycle phases that define a sequence of goals to execute during a build process. Each phase represents a stage in the build lifecycle and can have zero or more goals bound to it.

References:
https://maven.apache.org/guides/introduction/introduction-to-the-lifecycle.html

A.

Object Store v2 REST API

Explanation
To remove values from Mule application A’s Object Store v2, Mule application B can use Object Store v2 REST API. This API allows performing operations on Object Store v2 resources using HTTP methods, such as GET, POST, PUT, and DELETE. Mule application B can use the DELETE method to remove values from Mule application A’s Object Store v2 by specifying the object store ID and the key of the value to delete.

References: https://docs.mulesoft.com/object-store/osv2-apis

A.

A parent pom.xml

Explanation:
To reuse Mule Maven plugin configuration across multiple individual Mule applications, the developer should use a parent pom.xml file. A parent pom.xml file defines common configuration for one or more child projects that inherit from it. The developer can specify common properties and dependencies for all child projects in the parent pom.xml file, such as Mule Maven plugin configuration, and then reference them in each child project’s pom.xml file using placeholders. 

References:
https://docs.mulesoft.com/mule-runtime/4.3/mmp-concept#parent-pom
https://maven.apache.org/guides/introduction/introduction-to-the-pom.html#Project_Inheritance

A.

Store the contents of the file on separate storage, and store the key and location of the file Object using Object Store v2

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.

References:
https://docs.mulesoft.com/object-store/osv2-faq#can-i-store-files-in-object-store-v2

B.

In case of a cache it, only the HTTP Caching policy is evaluating; then the cached response is returned to the caller

Explanation:
When an HTTP request is received and the HTTP Caching policy is applied first, it checks if there is a cached response for that request in Object Store. If there is a cache hit, meaning that a valid cached response exists, then only the HTTP Caching policy is evaluated and the cached response is returned to the caller without invoking the OAuth policy or the API implementation. If there is a cache miss, meaning that no valid cached response exists, then both the HTTP Caching policy and the OAuth policy are evaluated before invoking the API implementation. 

References:
https://docs.mulesoft.com/api-manager/2.x/http-caching-policy#policy-ordering