What is active directory?
What is a domain controller?
What is a forest?
What is Tree, Domain, … (“chart” in answer)
Trees - A hierarchy of domains in Active Directory Domain Services
Domains - Used to group and manage objects
Organizational Units (OUs) - Containers for groups, computers, users, printers and other OUs
Trusts - Allows users to access resources in other domains
Objects - users, groups, printers, computers, shares
Domain Services - DNS Server, LLMNR, IPv6
Domain Schema - Rules for object creation