八年级信息技术上册第一单元走进网络第3课《接入因特网》课件1浙教版.ppt

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第三课 接入因特网,接入因特网,1. 上网方式,2. 网络连接设备,3. 网络协议,上网方式,有线上网:一般指使用网卡、网线、调制解调器、路由器等网络设备,连接到因特网的上网方式。,上网方式,无线上网:指通过无线电波作为数据传输媒介实现网络连接的上网方式。,网络连接设备,有线上网设备:,a.,b.,c.,d.,交换机,调制解调器,路由器,网卡,网络连接设备,无线上网设备:,a.,b.,c.,3G上网卡,无线网卡,无线路由器,网络协议,网络协议:是计算机网络中各种设备之间通信规则的集合,是接入网络的计算机之间的“共同语言”。,网络协议,你会查看自己所使用计算机的网络协议吗?,操作步骤:右击电脑桌面上的“网络”图标在弹出的快捷菜单中选择“属性” “本地连接” “属性”,查看所使用的计算机网络协议,网络协议,大家知道几种最常见的网络协议呢?,知识补充,TCP/IP传输控制协议/因特网互联协议FTP 文件传输协议HTTP 超文本传输协议PPP 点对点协议UDP 用户数据报协议RIP 路由信息协议,谢谢!,

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