200-125题库V3.0(10/23版本)題目問題，關於EtherChannel

Mista

QUESTION 460
Which two statements about configuring an Ether Channel on a Cisco switch are true?(Choose two)
A. The interfaces configured in the Ether Channel must have the same STP port path cost
B. The interfaces configured in the Ether Channel must be on the same physical switch
C. An Ether Channel can operate in Layer 2 mode only
D. The interfaces configured in the Ether Channel must operate at the same speed and duplex mode
E. The interfaces configured in the Ether Channel must be part of the same VLAN or trunk
Correct Answer: BD


我認為E沒錯，想請問是為何答案不是DE
請高手幫忙解答，感謝

themepark

E说的是must，显示不适用于L3 port-channel interface，敲no switchport之后，再没有vlan或trunk可言。

h19

E选项指的是二层端口的，etherchannel还可以是三层端口的

david99022

A>錯誤，Ether Channel跟STP沒影響。
B>我認為錯誤>Ether Channel不一定要建在同一台switch，可以把兩台stack的switch做Ether Channe。也可以把兩台不同實體的switch做Ether Channe(類似vpc架構)
C>錯誤，Ether Channel可以是L2或L3
D>正確
E>錯誤，L3的Ether Channel就沒有vlan了

答案B我的答案跟大家不一樣，歡迎討論~

AlanHan

Which two statements about configuring an EtherChannel on a Cisco switch are true?
(Choose two.)
A. The interfaces configured in the EtherChannel must be on the same physical switch.
B. The interfaces configured in the EtherChannel must have the same STP port path cost
C. The interfaces configured in the EtherChannel must be part of the same VLAN or trunk.
D. An EtherChannel can operate in Layer 2 mode only.
E. The interfaces configured in the EtherChannel must operate at the same speed and duplex mode

這題我的認知是 C,E  由請先進們討論討論。

tommvli