How does a Cisco ISE server determine whether a client supports EAP chaining?
A. It sends an indentity-type TLV to the client and analyzes the response
B. It analyzes the options filed in the tcp header of the first packet it receives from the client
C. It analyzes the X.509 certificate it receives from the client through the TLS tunnel
D. It send an MD5 challenge to the client and analyzes the response
E. It analyzes the EAPoL message the client sends during the initial handshake
https://www.cisco.com/c/dam/en/us/solutions/collateral/enterprise/design-zone-security/howto_80_eapchaining_deployment.pdf
To accomplish EAP Chaining:
(Note: It is assumed that the PAC files have already been provisioned, and the secure TLS tunnel has been established)
The ISE server sends the optional Identity-Type TLV, machine or user, and request identity to the client.
The client responds back with either the same ldentity-Type TLV, or proposes another identity-type.