Enumerating Domain Users

Get-DomainUser | select samaccountname

Enumerating Domain Computers

Get-DomainComputer | select samaccountname

Enumerating Domain Admins

Get-DomainGroupMember -Identity "Domain Admins" | select MemberName

Enumerating Enterprise Admins

Get-DomainGroupMember -Identity "Enterprise Admins" -Domain techcorp.local | select MemberName

Enumerating Kerberose Policy

(Get-DomainPolicy).'KerberosPolicy'