问答题

简答题 it is belong a family of ip routing protocols，each router have a partial map of network，what is the routing protocol？

【参考答案】

Class A： 10.0.0.0 --- 10.255.255.255

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什么环境下需要用组播？

单项选择题

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.