Which of the following protocols does NOT natively support MuleSoft?

MuleSoft supports a wide array of protocols for integrating systems, and each of the listed options has varying levels of native support within the Anypoint Platform. HTTP, FTP, and SMTP are common and widely used protocols that connect web applications, transfer files, and send emails, respectively. MuleSoft provides built-in connectors and features for these protocols, making them easy to work with in data flows and application integrations.

On the other hand, RMI (Remote Method Invocation) does not have native support in MuleSoft. RMI is a Java-specific protocol that allows methods to be invoked remotely within a Java Virtual Machine, making it less suited for broader integration scenarios that MuleSoft typically handles across different platforms and technologies. Because of this limitation, users usually need to implement custom solutions or use workarounds to integrate with systems that rely on RMI.