Setup.exe /qs /ACTION=Install /FEATURES=SQLEngine,Replication
/INSTANCENAME=MSSQLSERVER /SQLSVCACCOUNT="<DomainName\UserName>"
/SQLSVCPASSWORD="<StrongPassword>"
/SQLSYSADMINACCOUNTS="<DomainName\UserName>" /AGTSVCACCOUNT="NT AUTHORITY\Network Service"
/TCPENABLED=1 /IACCEPTSQLSERVERLICENSETERMS