[单选题]交换机上VLAN的功能描述中，正确的是（）

正确答案 ：B

可以减少广播对网络性能的影响

[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

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