Which feature allows users to temporarily connect to target devices without pre-stored credentials?

Ad-Hoc Access is the feature that allows users to temporarily connect to target devices without needing pre-stored credentials. This functionality is particularly valuable in scenarios where quick, immediate access to resources is necessary, such as in emergency situations or during troubleshooting. Ad-Hoc Access facilitates temporary connections while maintaining the security protocols and control measures of the system.

This feature eliminates the requirement for previously stored credentials, making it highly flexible for users who might need to access devices on short notice. It's designed to provide streamlined access under specific conditions where traditional methods of credential management may not be practical or available.

The other options, while related to access methods, involve differences in how credentials or permissions are managed. Emergency Access typically implies a predefined process for urgent situations, whereas Quick Connect and One-Time Login are concepts that suggest single-use or temporary credentials may be involved. Ad-Hoc Access, on the other hand, inherently supports connection without those pre-established credentials.