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BRC300

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）

BRC300

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》

BRC300

從1956年正式提出人工智能學科算起，50多年來，取得長足的發展，成 為一門廣泛的交叉和前沿科學。總的說來，人工智能的目的就是讓計算 機這臺機器能夠像人一樣思考。如果希望做出一臺能夠思考的機器， 那就必須知道什么是思考，更進一步講就是什么是智慧。什么樣的機 器才是智慧的呢？科學家已經作出了汽車，火車，飛機，收音機等等， 它們模仿我們身體器官的功能，但是能不能模仿人類大腦的功能呢？到 目前為止，我們也僅僅知道這個裝在我們天靈蓋里面的東西是由數十億 個神經細胞組成的器官，我們對這個東西知之甚少，模仿它或許是天下 最困難的事情了。

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