Which secure connection should be used to access vManage REST APIs via the web server?

Authenticated HTTPS is the correct choice because vManage REST APIs are accessed securely over a web server, and HTTPS provides encryption and authentication necessary for secure communication. DTLS (Datagram Transport Layer Security) is used for UDP-based applications and is not the standard for web server API access. The JSON Inspector interface and HTTP Inspector interface are tools or methods for viewing and interacting with JSON or HTTP traffic, respectively, but they do not define the secure connection protocol itself.