You have implemented 802.1X authentication in your Layer 2 network and you have only a single
RADIUS server. You are asked to ensure that if the RADIUS server becomes unreachable or fails,
users connected to the ge-0/0/0 port are still able to reach the Internet using a predefined guest
VLAN.
Which command allows this access?

A.
[edit]
user@switch# set protocols dot1x authenticator interface ge-0/0/0.0 radius-fail vlan guest

B.
[edit]
user@switch# set protocols dot1x authenticator interface ge-0/0/0.0 server-fail vlan-name guest

C.
[edit]
user@switch# set protocols dot1x authenticator interface ge-0/0/0.0 auth-fail assign-vlan guest

D.
[edit]
user@switch# set protocols dot1x authenticator interface ge-0/0/0.0 radius-fail assign guest