网络三层模式中的物理层和逻辑层 具体内容

2025-02-09 08:14:54
推荐回答(2个)
回答1:

逻辑层我还真没听说过,物理层,数据链路层,网络层,传输层,会话层,表示层,应用层倒是知道.

物理层是OSI的第一层,它虽然处于最底层,却是整个开放系统的基础。物理层为设备之间 的数据通信提供传输媒体及互连设备,为数据传输提供可靠的环境。

建议去你先去看下osi七层模型,每层都有那些设备,每层都有那些协议

应用层 各种程序
表示层 编码方式
会话层 建立会话
传输层 端口 名词 就是出现在传输层上
网络层 IP IPX 。。 路由器。多层交换机 防火墙
数据链路层 HDLC 帧中继 。。。。PPP 交换机。
物理层 网线 。。。数据流 01010100 网线 HUB

回答2:

OSI七层那个没有得到实际应用 计算机网络现在都是4层 给你推荐本书 《计算机网络》谢希仁 讲得很详细 现在出到5版了 我也在学习中 大家可以交流交流

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