300-115 Etherchannel問題

tony10395

QUESTION 38 You have recently deployed an access switch with two fiber cables that connect it to a distribution switch in EtherChannel mode. Soon after it booted up, one of the uplink ports to the distribution switch was errordisabled. Which option is the most likely reason for the problem?
A. The port-channel detected an inconsistent configuration
B. The switch is operating in UDLD aggressive mode and it failed to receive a UDLD message from the peer
C. spanning tree detected a loop
D. The switch is operating in UDLD normal mode and it failed to receive a UDLD message from the peer
Correct Answer: A

請問為什麼B選項不可能

宋客2013

B项是说两端的模式是一样的，既然配置模式一样那就不符合题目所说的内容，这不是原因。

emmrox

非常感謝很多