DFL

How to verify AD DS FFL/DFL and how to rollback to a lower levels

Microsoft Active Directory Services evolves with each edition of Windows Server and whenever you do initial install of AD DS or upgrade your DC servers there is an option/decision for you to set/upgrade Domain and Forest functional levels (I will further refer those ad DFL and FFL respectively). Each new level introduces some new features How to verify AD DS FFL/DFL and how to rollback to a lower levels