SALESFORCE-MULESOFT-DEVELOPER-II Online Practice Questions and Answers

Correct Answer: B

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. https://docs.mulesoft.com/apimanager/2.x/policy-mule4-custom-policy#policy-xml-file

Correct Answer: B

Mutual TLS (mTLS) is an extension of TLS that requires both parties (client and server) to present their certificates to each other during the handshake process. This way, both parties can verify each other's identity and establish a secure connection. The authentication of the server happens before the authentication of the client, as the server sends its certificate first and then requests the client's certificate. https:// docs.mulesoft.com/mule-runtime.3/tls-configuration#mutualauthentication

Correct Answer: D

To package a custom policy using the HTTP Policy Transform Extension, the developer needs to create an XML template file and a YAML configuration file. The XML template file defines the policy logic using Mule components and placeholders for user-defined properties. The YAML configuration file defines the metadata of the policy, such as its name, description, category, parameters, and dependencies. https://docs.mulesoft.com/ api-manager.x/http-policytransform#packaging-the-policy

Correct Answer: A

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. https://docs.mulesoft.com/objectstore/ osv2-faq#how-does-the-time-to-live-work

Correct Answer: C

To unit test modules created with XML SDK, the developer needs to use the MUnit Extensions Maven plugin. This plugin allows testing XML SDK modules using MUnit by adding a dependency to the module under test and using a custom

processor tag to invoke it.

Reference:

https://docs.mulesoft.com/mule-sdk.1/xml-sdk#testing

Correct Answer: C

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. https://docs.mulesoft.com/ mule-runtime.3/scattergather-concept https://docs.mulesoft.com/mule-runtime.3/saga

Correct Answer: A

To get the average number of requests and average response time of the Salesforce Connector, the developer should access Anypoint Monitoring's built-in dashboard, select a resource (such as an application or an API), and locate the information under the Connectors tab. The Connectors tab shows metrics for each connector used by the resource, such as average requests per minute, average response time, and failures. https:// docs.mulesoft.com/monitoring/built-indashboard-reference

Correct Answer: E

To invoke Bioinfo System API using its REST Connector, option E should be added to the pom.xml file.

This option adds a dependency for Bioinfo System API REST Connector with its group ID, artifact ID, version, classifier, and type. The classifier specifies that it is a REST Connector (raml-client), and the type specifies that it is a Mule plugin

(mule-plugin).

Reference:

https://docs.mulesoft.com/apikit.x/apikit-4-generate-from-rest-api-task#add-the-api-dependencyto-the-pom-file

Correct Answer: C

To configure API Functional Monitoring to monitor the health of 10 public APIs periodically while minimizing operational overhead and cost, the developer should use one public location with all 10 APIs in a single schedule. A public location is a worker that runs in a CloudHub shared environment, which is cheaper and easier to maintain than a private location. A single schedule allows running all 10 APIs tests at the same time and frequency, which reduces complexity and resource consumption. https://docs.mulesoft.com/functional-monitoring/fm-create-monitor#create-a-monitor

Correct Answer: B

To ensure idempotent behavior within a Mule flow that contains a subflow with a Scatter-Gather scope, the developer should ensure an error-handling flow performs corrective actions to roll back all changes if any leg of the Scatter-Gather fails. Idempotency means that multiple identical requests have the same effect as a single request. Therefore, if one of the HTTP requests inside the Scatter- Gather fails, the error-handling flow should undo any changes made by other successful requests to ensure consistency and avoid partial updates. https://docs.mulesoft.com/muleruntime/4.3/scatter-gather-concept https://docs.mulesoft.com/mule-runtime.3/error-handling