[单选]
Refer to the exhibit. You are setting up a 2-gigabit EtherChannel. Following IEEE standards, the exhibit shows your configuration in a local switch1. However, EtherChannel is not coming up. Which one of these statements could be a possible reason?（）

A . EtherChannel is only available in Cisco equipment.
B . The customer side is supposed to be running PAgP， which is a Cisco standard.
C . PAgP is not an IEEE standard. VRRP should be used.
D . The configuration on switch1 needs to be modified to use LACP.

BGP选路的最优先参数是什么？课外活动是指学生在课堂学习以外，自行组织的活动。项目融资包括那几个阶段？ M32单板上产生了MUT-LOS告警，关于此告警说法正确的是（）测试接收光功率，检查单板输入口光纤、接头或法兰盘。在只有一波的情况下，可能是TWC的输出光纤错误地插到了M32的接收端口。如果有多块TWC接入M32，有可能是其中一块TWC输出接近无光。如果是接入的TWC输出无光，则检查接入TWC的光纤、接头以及SDH的输出。甜炼乳感官评定时，滋味和气味的满分为（）分 30。 60。 50。

Refer to the exhibit. You are setting up a 2-gigabit EtherChannel. Following IEEE standards, the exhibit shows your configuration in a local switch1. However, EtherChannel is not coming up. Which one of these statements could be a possible reason?（）

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[单选] Refer to the exhibit. You are setting up a 2-gigabit EtherChannel. Following IEEE standards, the exhibit shows your configuration in a local switch1. However, EtherChannel is not coming up. Which one of these statements could be a possible reason?（）

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[单选]
Refer to the exhibit. You are setting up a 2-gigabit EtherChannel. Following IEEE standards, the exhibit shows your configuration in a local switch1. However, EtherChannel is not coming up. Which one of these statements could be a possible reason?（）