Cisco Identity Based Network Services used with Cisco Secure ACS provides which two of the following benefits? (Choose two.)

A.
high accuracy location of identity-based users

B.
flexible policy assignments such as per-user quotas and virtual LAN assignments

C.
strong mutual authentication using public key infrastructure, tokens, and smart cards

D.
user accounting and auditing and the ability to track and display users on a map

E.
both user-based and device-based identified entities mapped to policies that are centrally created and administered by Cisco WCS