What ensures the security of RESTlets during data transmission?

The security of RESTlets during data transmission is primarily ensured through authentication methods implemented in the system. In the context of REST API architecture, authentication mechanisms such as OAuth and token-based authentication serve to validate users or applications attempting to access the RESTlet, ensuring that only authorized users can send or receive data. These methods help protect sensitive information by ensuring that requests to the RESTlet are made by verified users, reducing the risk of unauthorized access.

While other options may be important in different contexts, they do not directly relate to RESTlet security in terms of data transmission. For instance, SOAP-based messaging is associated with a different protocol other than REST. Encrypted file storage pertains to securing data at rest rather than during transmission. Real-time monitoring systems focus on observing activity and potential threats but do not actively secure the transmission itself. Therefore, the implementation of robust authentication methods is crucial for safeguarding data while it is being transmitted through RESTlets.