Free Salesforce Salesforce-MuleSoft-Developer-II Exam Actual Questions

The questions for Salesforce-MuleSoft-Developer-II were last updated On Mar 31, 2025

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Question No. 1

A Mule application need to invoice an API hosted by an external system to initiate a process. The external API takes anywhere between one minute and 24 hours to compute its process.

Which implementation should be used to get response data from the external API after it completes processing?

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Correct Answer: D

To get response data from the external API after it completes processing, the developer should expose an HTTP callback API in Mule and register it with the external system. This way, the external API can invoke the callback API with the response data when it is ready, instead of making the Mule application wait for a long time or poll for a response repeatedly. Reference: https://docs.mulesoft.com/mule-runtime/4.3/http-listener-ref#callback


Question No. 2

Which statement is true about using mutual TLS to secure an application?

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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. Reference: https://docs.mulesoft.com/mule-runtime/4.3/tls-configuration#mutual-authentication


Question No. 3

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?

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Correct Answer: B

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


Question No. 4

When implementing a synchronous API where the event source is an HTTP Listener, a developer needs to return the same correlation ID back to the caller in the HTTP response header.

How can this be achieved?

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Correct Answer: D

When implementing a synchronous API where the event source is an HTTP Listener, Mule automatically propagates some message attributes between flows via outbound and inbound properties. One of these attributes is correlation ID, which is returned to the caller in the response header by default as MULE_CORRELATION_ID. Reference: https://docs.mulesoft.com/mule-runtime/4.3/about-mule-message#message-attributes


Question No. 5

Which pattern can a web API use to notify its client of state changes as soon as they occur?

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Correct Answer: A

A web API can use HTTP Webhook to notify its client of state changes as soon as they occur. A webhook is an HTTP callback that allows an API to send real-time notifications to another system or application when an event happens. The client registers a URL with the API where it wants to receive notifications, and then the API sends an HTTP request to that URL with information about the event. Reference: https://docs.mulesoft.com/connectors/webhook/webhook-connector


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