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class="position"> <em class="iconfont ca icon-dingwei"></em> <a href='http://www.yishupeixun.net/'>學(xué)習(xí)啦</a> > <a href='http://www.yishupeixun.net/diannao/'>學(xué)習(xí)電腦</a> > <a href='http://www.yishupeixun.net/diannao/wangluo/'>網(wǎng)絡(luò)知識(shí)</a> > <a href='http://www.yishupeixun.net/diannao/wangluo/jichu/'>網(wǎng)絡(luò)基礎(chǔ)知識(shí)</a> > <span>總線拓?fù)?/span> </div> <div id="e286xo47mbob" class="ar_con_nr"> <div id="e286xo47mbob" class="con_l fl"> <article class="ar_con bg louti"> <div id="e286xo47mbob" class="ar_title"> <h1>總線拓?fù)?/h1> <div id="e286xo47mbob" class="ar_title_b"> <div id="e286xo47mbob" class="sub_title clear"> <span id="e286xo47mbob" class="sp2 c6 fl">時(shí)間：<time class="fxtime">2016-03-14 14:15:33</time></span> <span id="e286xo47mbob" class="sp1 c6 fl"><em id="zuozhe" class="noshow">林少</em><em class="user_id noshow">742</em>由 <em class="nickname"></em> 分享</span> <span id="e286xo47mbob" class="fl arc_btn"></span> </div> </div> </div> <div id="e286xo47mbob" class="y_ju"><script type="text/javascript">a("title");</script></div> <div id="e286xo47mbob" class="con_article con_main" id="contentText"> <p>總線拓?fù)?/p><p> 　　今天帶來(lái)計(jì)算機(jī)網(wǎng)絡(luò)拓?fù)漕?lèi)型的總線拓?fù)?，總線的結(jié)構(gòu)的好處在于簡(jiǎn)易的布線和維護(hù)方便，簡(jiǎn)單的結(jié)構(gòu)，可靠的傳輸速度，多個(gè)結(jié)點(diǎn)共用一條傳輸信道，利用率比較高，當(dāng)然，它的缺點(diǎn)也很致命，這也是他不常用的原因，下面便是小編整理的知識(shí)點(diǎn)</p><p> 總線拓?fù)?/p><p> 　　總線拓?fù)淇偩€拓?fù)浣Y(jié)構(gòu)采用一個(gè)信道作為傳輸媒體,所有站點(diǎn)都通過(guò)相應(yīng)的硬件接口直接連到這一公共傳輸媒體上,該公共傳輸媒體即稱(chēng)為總線。任何一個(gè)站發(fā)送的信號(hào)都沿著傳輸媒體傳播,而且能被所有其它站所接收。因?yàn)樗姓军c(diǎn)共享一條公用的傳輸信道,所以一次只能由一個(gè)設(shè)備傳輸信號(hào)。通常采用分布式控制策略來(lái)確定哪個(gè)站點(diǎn)可以發(fā)送o發(fā)送時(shí),發(fā)送站將報(bào)文分成分組,然后逐個(gè)依次發(fā)送這些分組,有時(shí)還要與其它站來(lái)的分組交替地在媒體上傳輸。當(dāng)分組經(jīng)過(guò)各站時(shí),其中的目的站會(huì)識(shí)別到分組所攜帶的目的地址,然后復(fù)制下這些分組的內(nèi)容。</p><p> 　　總線拓?fù)浣Y(jié)構(gòu)的優(yōu)點(diǎn)</p><p> 　　(1)總線結(jié)構(gòu)所需要的電纜數(shù)量少，線纜長(zhǎng)度短，易于布線和維護(hù)。</p><p> 　　(2)總線結(jié)構(gòu)簡(jiǎn)單,又是元源工作,有較高的可靠性。傳輸速率高，可達(dá)1~100Mbps。</p><p> 　　(3)易于擴(kuò)充,增加或減少用戶(hù)比較方便，結(jié)構(gòu)簡(jiǎn)單，組網(wǎng)容易，網(wǎng)絡(luò)擴(kuò)展方便(4)多個(gè)結(jié)點(diǎn)共用一條傳輸信道，信道利用率高。</p><p> 　　總線拓?fù)涞娜秉c(diǎn)</p><p> 　　(1)總線的傳輸距離有限,通信范圍受到限制。</p><p> 　　(2)故障診斷和隔離較困難。</p><p> 　　(3)分布式協(xié)議不能保證信息的及時(shí)傳送,不具有實(shí)時(shí)功能。站點(diǎn)必須是智能的,要有媒體訪問(wèn)控制功能,從而增加了站點(diǎn)的硬件和軟件開(kāi)銷(xiāo)。</p> </div> <div id="e286xo47mbob" class="y_ju"><script type="text/javascript">a("conten");</script></div> <div id="e286xo47mbob" class="pnum"> <ul id="page_slice"> <div id="e286xo47mbob" class="clear"></div> </ul> </div> </article> <div id="e286xo47mbob" class="list_hot ar_related bj_mt20 louti"> <h4 class="title2 title2_te">相關(guān)文章</h4> <ul class="bj_mt20"> <li id="e286xo47mbob" class="lb_3 chao"> <time>03-06</time> <a href="http://www.yishupeixun.net/shenghuo/anquan/xiaofang/2744816.html" title="消防中多線和總線的不同之處" target="_blank">消防中多線和總線的不同之處</a> </li> <li id="e286xo47mbob" class="lb_3 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