论坛站务软件水平考试华为认证计算机等级PMP认证思科认证Photoshop3DMAX编程语言移动开发系统运维产品运营淘宝营销办公软件Ps修图云计算大数据摄影就业

<p style="margin-top: 0px; margin-bottom: 10px; padding: 0px; box-sizing: border-box; color: rgb(51, 51, 51); font-family: &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">　　为帮助考生备考2022年软考<span style="margin: 0px; padding: 0px; box-sizing: border-box; color: rgb(255, 0, 0);"><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-weight: 700;"><a href="http://www.kokojia.com/package-203.html" target="_blank" style="margin: 0px; padding: 0px; box-sizing: border-box; cursor: pointer; text-decoration-line: none; color: rgb(51, 122, 183); background-color: transparent;"><span style="margin: 0px; padding: 0px; box-sizing: border-box; color: rgb(255, 0, 0);">网络工程师考试</span></a></span></span>，课课家小编为大家整理了2022年网络工程师考试知识点(二十五)：以太网MAC地址，相信对大家备考复习会有帮助。</p><p style="margin-top: 0px; margin-bottom: 10px; padding: 0px; box-sizing: border-box; color: rgb(51, 51, 51); font-family: &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">　　很多考生在备考2022年网络工程师考试，课课家小编为大家整理了2022年网络工程师考试知识点(二十五)：以太网MAC地址，供考生备考复习。</p><p style="margin-top: 0px; margin-bottom: 10px; padding: 0px; box-sizing: border-box; color: rgb(51, 51, 51); font-family: &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">　　以太网地址用来识别一个以太网上的某个单独的设备或一组设备，这个地址又叫做物理地址或者MAC地址。</p><p style="margin-top: 0px; margin-bottom: 10px; padding: 0px; box-sizing: border-box; color: rgb(51, 51, 51); font-family: &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">　　MAC采用十六进制数表示，共六个字节(48位)。IEEE规定MAC地址第一个字段的最低位为I/G位。I/G位标志这个地址是单播地址还是组播地址。而广播地址就是FFFF.FFFF.FFFF。</p><p style="margin-top: 0px; margin-bottom: 10px; padding: 0px; box-sizing: border-box; color: rgb(51, 51, 51); font-family: &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">　　注意：以太网卡有过滤功能，网卡只把发送给自己的帧接收，解封装后交给上层处理，而不是发给自己的帧会丢弃。不过，有些网卡可以设置为混杂模式，也就是可以接收任意帧，而不考虑这帧是不是发给自己的。这类网卡经常用于一些网络协议分析工具中。</p><p style="margin-top: 0px; margin-bottom: 10px; padding: 0px; line-height: 26px; color: rgb(51, 51, 51); white-space: normal; box-sizing: border-box; font-family: &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; background-color: rgb(255, 255, 255);">　　&gt;&gt;&gt;&gt;&gt;&gt;点击进入<span style="margin: 0px; padding: 0px; box-sizing: border-box; color: rgb(255, 0, 0);"><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-weight: 700;"><a href="http://www.kokojia.com/activity-ruankao.html" target="_blank" style="margin: 0px; padding: 0px; cursor: pointer; text-decoration-line: none; color: rgb(51, 122, 183); box-sizing: border-box; background-color: transparent;"><span style="margin: 0px; padding: 0px; box-sizing: border-box; color: rgb(255, 0, 0);">软考报名专题</span></a></span></span></p><p style="margin-top: 0px; margin-bottom: 10px; padding: 0px; line-height: 26px; color: rgb(51, 51, 51); white-space: normal; box-sizing: border-box; font-family: &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; background-color: rgb(255, 255, 255);">&nbsp;</p><p style="margin-top: 0px; margin-bottom: 10px; padding: 0px; line-height: 26px; color: rgb(51, 51, 51); white-space: normal; box-sizing: border-box; font-family: &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; background-color: rgb(255, 255, 255);"><span style="margin: 0px; padding: 0px; box-sizing: border-box; color: rgb(255, 0, 0);"><span style="margin: 0px; padding: 0px; box-sizing: border-box; font-weight: 700;"><span style="margin: 0px; padding: 0px; box-sizing: border-box;"><span style="margin: 0px; padding: 0px; box-sizing: border-box;"><span style="margin: 0px; padding: 0px; box-sizing: border-box;"><span style="margin: 0px; padding: 0px; box-sizing: border-box;"><span style="margin: 0px; padding: 0px; box-sizing: border-box;"><span style="margin: 0px; padding: 0px; box-sizing: border-box;"><span style="margin: 0px; padding: 0px; box-sizing: border-box;"><span style="margin: 0px; padding: 0px; box-sizing: border-box;"><span style="margin: 0px; padding: 0px; box-sizing: border-box;"><span style="margin: 0px; padding: 0px; box-sizing: border-box;">　　相关推荐：<a href="http://bbs.kokojia.com/ruankao/89368/" target="_blank" style="margin: 0px; padding: 0px; cursor: pointer; color: rgb(0, 174, 239);">2022年网络工程师考试知识点汇总</a></span></span></span></span></span></span></span></span></span></span></span></span></p><p style="margin-top: 0px; margin-bottom: 10px; padding: 0px; box-sizing: border-box; color: rgb(51, 51, 51); font-family: &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"><br/></p>

论坛站务软件水平考试华为认证计算机等级PMP认证思科认证Photoshop3DMAX编程语言移动开发系统运维产品运营淘宝营销办公软件Ps修图云计算大数据摄影就业