Go back to 642-591 - CANAC - Implementing Cisco NAC Appliance

Question :-

Which Cisco NAS Appliance out-of-band solution statement is correct?
The switchport access and authentication VLAN information is sent to the Access switch from the Cisco NAM
As a laptop device accesses the Cisco NAC Appliance network, the access switch sends the device MAC address to the Cisco NAS
Access switch to Cisco NAM configuration and status change messages are communicated via a proprietary protocol
All Client traffic flows through the CAS while access switch VLAN management is performed out of band

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