When 802.1X, MAC-RADIUS, and Captive Portal are enabled on an interface, which
authentication sequence occurs?
A.
The authentication sequence is based on the order of the configuration.
B.
If MAC-RADIUS is rejected, Captive Portal will start. If Captive portal is timed out, 802.1X will
start.
C.
If 802.1X times out, then MAC-RADIUS will start. If MAC-RADIUS is timed out by the RADIUS
server, then Captive Portal will start.
D.
If 802.1X times out, then MAC-RADIUS will start. If MAC-RADIUS is rejected by the RADIUS
server, then Captive Portal will start.
D is the correct answer
http://www.juniper.net/documentation/en_US/junos12.1/topics/reference/general/authentication-process-flow-chart-ex-series-switches.html