Registration Authority is a company or organization that is responsible for receiving and validating requests for digital certificates and public/private key pairs.
What is Remote Access to a Network and how does it work?
Recursive Query is a Domain Name System (DNS) query in which a resolver contacts a name server to perform a name lookup and the name server returns a result or an error.
Reverse Hosting, also called virtual hosting, is an extension to reverse proxying that is supported by Microsoft Proxy Server.
Resource Domain is a type of domain in an enterprise networking environment that includes file, print, and other resources for users throughout the enterprise.
RFC (stands for Request For Comments) is a document that describes the standards, protocols, and technologies of the Internet and TCP/IP.