400-251有道问题，问下

170417111

Which command is used to enable 802.1x authorizationon an interface?
( r1 M! Z5 j9 Q0 N: m# g3 uA. authentication port-control auto
2 A: b/ Q: F* V. k  sB. aaa authorization auth-proxy default
9 q1 s9 ?% z* X" O) c4 \" i/ B/ v6 VC. aaa authorization network default group tacacs+
D. authentication control-direction both
# X) Y6 W2 o# b( v' [, k( XE. authentication open
- P, x/ C0 C, [, ^* N% X! e
$ \- z  Q6 r* A! F/ p( A2 j7 S( G题库有选A，也有选C，到底哪个才是对的？

0 L; L2 o. \6 Y3 X# A" R7 S

梦里梦境太长

802.1x authorizationon ，，，，选C；如果是802.1x authentication，则选A

yuminliu

應該是"A"。"C"是認證主機設定。Authentication Initiation and Message Exchange During 802.1x authentication, the switch or the client can initiate authentication. If you enable authentication on a port by using the authentication port-control auto or dot1x port-control auto interface configuration command, the switch initiates authentication when the link state changes from down to up or periodically as long as the port remains up and unauthenticated.

ricecs

authentication port-control auto

ryau

我選了 A

ahmadomari

thanks

hellben

gongxigongxi