In your 802.1X-enabled network, a RADIUS server fails to respond or authenticate a device.
On an EX Series switch, what are three supported actions? (Choose three.)
A.
Traffic can be allowed.
B.
Traffic can be denied.
C.
Traffic can be redirected to another subnet.
D.
Traffic can be redirected to another VLAN.
E.
Traffic can be redirected to another port.
http://www.juniper.net/techpubs/en_US/junos12.1/topics/concept/layer-2-8021x-port-network-authentication-security-understanding.html#table-8021X-exclusion
RADIUS Server Failure Fallback
You can define one of four actions to be taken if no RADIUS authentication server is reachable (if, for example, a server failure or a timeout has occurred on the authentication server).
deny—(default) Prevent traffic from flowing from the supplicant through the interface.
permit—Allow traffic to flow from the supplicant through the interface as if the supplicant were successfully authenticated by the RADIUS server.
use-cache—Force successful authentication if authentication was granted before the failure or timeout. This ensures that authenticated users are not adversely affected by a failure or timeout.
vlan vlan-name | vlan-id —Move the supplicant to a different VLAN specified by name or ID. This applies only to the first supplicant connecting to the interface.