<Li> DirectAccess clients running Windows 7 "Ultimate" or "Enterprise" editions or Windows 8 "Enterprise" edition clients </Li> <Li> At least one domain controller and Domain Name System (DNS) server running Windows Server 2008 SP2 or Windows Server 2008 R2 . </Li> <Li> Public key infrastructure (PKI) to issue computer certificates . </Li> <P> DirectAccess With Windows Server 2012 requires: </P>

Which of the following os can be configured as direct access clients