You have a network running Windows OS. You currently peer-to-peer connect several computers to share resources such as printers and files. What is this kind of connection referred to as?
A workgroup is a decentralized peer-to-peer network that allows connected computers to share resources. This differs from a domain that requires a server used for centralized authentication.
Wikipedia
In computer networking a work group is collection of computers connected on a LAN that share the common resources and responsibilities. Workgroup is Microsoft's term for a peer-to-peer local area network. Computers running Microsoft operating systems in the same work group may share files, printers, or Internet connection. Work group contrasts with a domain, in which computers rely on centralized authentication.