网络数据链路层差错检错的相关内容

文章 2024-04-25 来自：开发者社区

【计算机网络】第三章数据链路层（概述封装成桢差错检错）

第三章数据链路层 3.1 数据链路层概述数据链路层是计算机网络体系结构中的一层，位于物理层和网络层之间。它负责在相邻节点之间传输数据，并提供可靠的数据传输。数据链路层的主要功能包括：帧封装：将由网络层传递下来的数据分割成较小的数据帧（Fra...

文章 2022-01-27 来自：开发者社区

【计算机网络】数据链路层 : 差错控制 ( 检错编码 | 差错来源 | 差错分类 | 冗余编码 )

文章目录一、差错来源二、差错分类三、差错控制四、 "物理层" 编码与 "数据链路层" 编码对比五、冗余编码一、差错来源"差错" 来源 : 差错是由于噪声产生 ;① 全局性噪声 :噪声来源 : 由于线路本身的电气特性产生的 “随机噪声” , 该噪声是信道固有的 , 随机存在的 ;解决方案 : 提高信噪比② 局部性噪声 : 这是差错的主要原因 ;噪声来源 : 外界短暂....

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更新时间 2024-04-26 09:42:04

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