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                ## 第三章 數據鏈路層 >三個基本問題,兩類信道<填空題> == >CSMA/CD協議(含比特時間/爭用期等概念)<簡答題,必考> ~~~ 比特時間是發送1比特所需的時間,它是數據率的倒數,便于建立信息長度與 發送時延的關系. "比特時間" 換算成 "微妙" 必須先知道數據率是多少,如數 據率是10Mb/s,則100比特等于10微妙 ~~~ >MAC地址+DIX v2 MAC幀 vs.IEEE 802.3幀+3種幀<選擇題> == >傳統以太網+共享vs.交換以太網(含交換結構,沖突域/廣播域)<填空,選擇> == >擴展以太網+高速以太網(含以太網3要素)<選擇題2分> == >3種交換方式,廣播域風暴問題,基于交換機的VLAN技術<選擇題1分> == >數據鏈路層聯網設備(NIC+Bridge+Switch)
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