[多选题]You need to describe the various types of flow control to your co-workers. Which of the following are types of flow control that can be used in a network? (Choose three)

正确答案 ：ABD

Congestion avoidance

Windowing

Buffering

[单选题]如果把路由器的某个端口的IP配置为：192.168.10.64，掩码配置为：255.255.255.248，则该端口（）

正确答案 ：B

会变成“administratively down”状态

[单选题]哪个命令可以成功测试网络：()

正确答案 ：B

Routerping192.5.5.30

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