Which of the following describes the security feature of the ProxySG regarding user credentials?

The statement regarding the security feature of the ProxySG that refers to user credentials being cached for improved performance is accurate because caching allows for quicker authentication processes. When user credentials are cached, the ProxySG can store a temporary copy of the authentication information, making it faster to verify a user's credentials during future access requests. This reduces the load on authentication servers and enhances overall efficiency without compromising security, as cached credentials are typically handled securely.

Caching credentials must still comply with security protocols and practices, ensuring that the user information is not exposed during the caching process. Utilizing cached credentials is a common practice to balance both performance and security, making it a key feature of the ProxySG.

Other options do not accurately reflect the ProxySG's approach to user credentials. Open transmission of user credentials can lead to security vulnerabilities, while limiting authentication solely to admin accounts would be impractical for user access. Requiring unique logins every time can hinder usability, making a balance between security and user experience a priority in ProxySG's design.