difference between a network and a domain
In Active Directory, a network object refers to the printer, users applications, and security that is related to the network. Each of these objects is uniquely identifiable, and this information is usually stored in the object. This data is also used to determine the purpose of the object in the network. The objects are positioned in the hierarchical structure that is an important characteristic of Active Directory. Domain is a set of computers on a network that are given a common name and database and abide by common policies. It is part of the Active Directory hierarchy. Domain is a central location for administrative work and security policies.
Local subnetwork domains. On a local area network (LAN), a domain is a subnetwork made up of a group of clients and servers under the control of one central security database. Within a domain, users authenticate once to a centralized server known as a domain controller, rather than repeatedly authenticating to individual servers and services.