Which statement is correct about this situation?

An administrator is replacing the current access switches with AOS-CX switches. The access layer switches must authenticate user and networking devices connecting to them. Some devices support no form of authentication, and some support 802.1X. Some ports have a VoIP phone and a PC connected to the same port, where the PC is connected to the data port of the phone and the phone’s LAN port is connected to the switch.

Which statement is correct about this situation?
A . 802.1X must be configured to work in fallback mode
B . Device fingerprinting is required for authentication
C . The client-limit setting for port access needs to be changed
D . Device mode should be implemented

View Answer

Answer: C

Explanation:

fallback mode if for the radius part; client limit is for multiple authent on one port (ie phone + pc)

From doc:

aaa port-access authenticator <port-list> client-limit <1-32>

Used after executing aaa port-access authenticator <port-list> to convert authentication from port-based to user-based. Specifies user-based 802.1X authentication and the maximum number of 802.1X-authenticated client sessions allowed on each of the ports in <port-list>. If a port currently has no authenticated client sessions, the next authenticated client session the port accepts determines the untagged VLAN membership to which the port is assigned during the session. If another client session begins later on the same port while an earlier session is active, the later session will be on the same untagged VLAN membership as the earlier session.