A16B-1110-0220
以太網的工作原理
以太網采用帶沖突檢測的載波幀聽多路訪問（CSMA/CD）機制。以太網
中節點都可以看到在網絡中發送的所有信息，因此，我們說以太網是一
種廣播網絡。
以太網的工作過程如下：
當以太網中的一臺主機要傳輸數據時，它將按如下步驟進行：
1、監聽信道上是否有信號在傳輸。如果有的話，表明信道處于忙狀態
，就繼續監聽，直到信道空閑為止。
2、若沒有監聽到任何信號，就傳輸數據
3、傳輸的時候繼續監聽，如發現沖突則執行退避算法，隨機等待一段
時間后，重新執行步驟1（當沖突發生時，涉及沖突的計算機會發送會
返回到監聽信道狀態。
注意：每臺計算機一次只允許發送一個包，一個擁塞序列，以警告所有
的節點）
A16B-1110-0220
聯系人：郭先生
聯系電話：18971415643《優先》
座機：027-83238871
傳真：207-61537051
QQ：810334512《優先》
A16B-1110-0220
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