You should read wiki for ACE http://docwiki.cisco.com/wiki/Cisco_ACE_4700_Series_Appliance_Quick_Start_Guide,_Release_A3%281.0%29_–_Overview for better understanding.
You should read wiki for ACE http://docwiki.cisco.com/wiki/Cisco_ACE_4700_Series_Appliance_Quick_Start_Guide,_Release_A3%281.0%29_–_Overview for better understanding.