[单选题]在OSI七层模型中,介质工作在哪一层()
正确答案 :C
物理层
[多选题]Which of the following are types of flow control? (Choose three)
正确答案 :ACD
Buffering
Windowing
Congestion avoidance
解析:解析:Explanation:Datatransmissionflowcontroloccursatlayer4withthehelpofbuffering,windowingandcongestionavoidance.
[单选题]下面有关交换机的描述中,正确的是()
正确答案 :C
交换机独占带宽
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