考数学||有一种实战经验叫计算IP
<section style="box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin: 10px 0% -20px;transform: translate3d(1px, 0px, 0px);-webkit-transform: translate3d(1px, 0px, 0px);-moz-transform: translate3d(1px, 0px, 0px);-o-transform: translate3d(1px, 0px, 0px);box-sizing: border-box;"><section class="" style="max-width: 100%;vertical-align: middle;display: inline-block;box-shadow: rgb(0, 0, 0) 0px 0px 0px;width: 19%;overflow: hidden !important;box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="text-align: center;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="display: inline-block;width: 90%;vertical-align: top;box-shadow: rgb(171, 171, 171) 0px 0px 5px;padding: 15px;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin: 10px 0% 20px;font-size: 18px;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: middle;box-sizing: border-box;"><section class="" style="max-width: 100%;display: inline-block;vertical-align: bottom;width: 1.6em;overflow: hidden !important;box-sizing: border-box;"></section><section class="" style="display: inline-block;vertical-align: bottom;padding-left: 5px;padding-right: 5px;line-height: 1.2em;margin-bottom: 2px;color: rgb(62, 62, 62);box-sizing: border-box;"><p style="box-sizing: border-box;">康康讲堂</p></section><section class="" style="max-width: 100%;display: inline-block;vertical-align: bottom;width: 1.6em;overflow: hidden !important;box-sizing: border-box;"></section></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin: 10px 0%;box-sizing: border-box;"><section class="" style="text-align: left;font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;">在网络应用中，知道如何计算IP地址是每一个安防人的必备技能，那么今天康康就趁这个机会给大家分享一下IP地址的计算方法。</p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="text-align: right;margin: -40px 0% 10px;box-sizing: border-box;"><section class="" style="max-width: 100%;vertical-align: middle;display: inline-block;box-shadow: rgb(0, 0, 0) 0px 0px 0px;width: 17%;overflow: hidden !important;box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section class="" style="margin-bottom: -12px;text-align: center;box-sizing: border-box;"><section style="display: inline-block;vertical-align: bottom;width: 6px;box-sizing: border-box;"><section style="width: 2px;margin: auto;height: 16px;background-color: rgb(17, 19, 22);box-sizing: border-box;"></section><section style="width: 6px;height: 6px;border-radius: 50%;background-color: rgb(17, 19, 22);box-sizing: border-box;"></section></section><section style="display: inline-block;vertical-align: bottom;width: 60%;box-sizing: border-box;"></section><section style="display: inline-block;vertical-align: bottom;width: 6px;box-sizing: border-box;"><section style="width: 2px;margin: auto;height: 16px;background-color: rgb(17, 19, 22);box-sizing: border-box;"></section><section style="width: 6px;height: 6px;border-radius: 50%;background-color: rgb(17, 19, 22);box-sizing: border-box;"></section></section></section><section class="" style="margin-left: auto;transform: rotate(0deg);-webkit-transform: rotate(0deg);-moz-transform: rotate(0deg);-o-transform: rotate(0deg);margin-bottom: -5px;width: 5px;height: 5px;background-color: rgb(255, 255, 255);box-sizing: border-box;"></section><section class="" style="border-right: 5px solid rgb(214, 240, 252);border-bottom: 5px solid rgb(214, 240, 252);border-top-color: rgb(214, 240, 252);border-left-color: rgb(214, 240, 252);box-sizing: border-box;"><section class="" style="background-color: rgb(255, 222, 3);padding: 10px;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="box-sizing: border-box;"><section class="" style="text-align: center;box-sizing: border-box;"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">【例子1】</strong></p><p style="box-sizing: border-box;">IP地址 192.168.100.5 </p><p style="box-sizing: border-box;">子网掩码 255.255.255.0</p></section></section></section></section></section><section class="" style="transform: rotate(0deg);-webkit-transform: rotate(0deg);-moz-transform: rotate(0deg);-o-transform: rotate(0deg);margin-top: -5px;width: 5px;height: 5px;background-color: rgb(255, 255, 255);box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-right: 0%;margin-left: 0%;overflow: hidden;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: middle;width: 6px;height: 6px;box-sizing: border-box;"><section style="transform: rotate(0.1deg);-webkit-transform: rotate(0.1deg);-moz-transform: rotate(0.1deg);-o-transform: rotate(0.1deg);box-sizing: border-box;"><section style="width: 6px;height: 6px;border-radius: 100%;background-color: rgb(37, 102, 0);box-sizing: border-box;"></section></section></section><section class="" style="display: inline-block;vertical-align: middle;width: 100%;margin-right: -6px;margin-left: -7px;border-bottom: 2px solid rgb(37, 102, 0);box-sizing: border-box;"></section><section class="" style="display: inline-block;vertical-align: middle;width: 6px;height: 6px;border-radius: 100%;background-color: rgb(37, 102, 0);box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: -12px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: top;width: 15%;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-right: 0%;margin-left: 0%;text-align: center;font-size: 14px;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: top;box-sizing: border-box;"><section class="" style="width: 2em;padding: 0.3em 0.5em;background-color: rgb(214, 51, 60);color: rgb(255, 255, 255);box-sizing: border-box;"><p style="box-sizing: border-box;">1</p></section><section style="height: 0.5em;width: 2em;border-left: 1em solid rgb(214, 51, 60);border-right: 1em solid rgb(214, 51, 60);border-bottom: 1em solid transparent !important;box-sizing: border-box;"></section></section></section></section></section><section class="" style="display: inline-block;vertical-align: top;width: 85%;padding-right: 13px;padding-left: 5px;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 5px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;">将IP地址和子网掩码换算为二进制，子网掩码连续全1的是网络地址，后面的是主机地址。虚线前为网络地址，虚线后为主机地址。</p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section class="" style="max-width: 100%;vertical-align: middle;display: inline-block;box-shadow: rgb(160, 160, 160) 0px 0px 0px;overflow: hidden !important;box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="box-sizing: border-box;"><section class="" style="box-sizing: border-box;"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 10px;margin-right: 0%;margin-left: 0%;overflow: hidden;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: middle;width: 6px;height: 6px;box-sizing: border-box;"><section style="transform: rotate(0.1deg);-webkit-transform: rotate(0.1deg);-moz-transform: rotate(0.1deg);-o-transform: rotate(0.1deg);box-sizing: border-box;"><section style="width: 6px;height: 6px;border-radius: 100%;background-color: rgb(37, 102, 0);box-sizing: border-box;"></section></section></section><section class="" style="display: inline-block;vertical-align: middle;width: 100%;margin-right: -6px;margin-left: -7px;border-bottom: 2px solid rgb(37, 102, 0);box-sizing: border-box;"></section><section class="" style="display: inline-block;vertical-align: middle;width: 6px;height: 6px;border-radius: 100%;background-color: rgb(37, 102, 0);box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: -12px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: top;width: 15%;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-right: 0%;margin-left: 0%;text-align: center;font-size: 14px;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: top;box-sizing: border-box;"><section class="" style="width: 2em;padding: 0.3em 0.5em;background-color: rgb(214, 51, 60);color: rgb(255, 255, 255);box-sizing: border-box;"><p style="box-sizing: border-box;">2</p></section><section style="height: 0.5em;width: 2em;border-left: 1em solid rgb(214, 51, 60);border-right: 1em solid rgb(214, 51, 60);border-bottom: 1em solid transparent !important;box-sizing: border-box;"></section></section></section></section></section><section class="" style="display: inline-block;vertical-align: top;width: 85%;padding-right: 13px;padding-left: 5px;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 5px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;">IP地址和子网掩码进行与运算，结果是网络地址。</p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section class="" style="max-width: 100%;vertical-align: middle;display: inline-block;overflow: hidden !important;box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="box-sizing: border-box;"><section class="" style="box-sizing: border-box;"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 10px;margin-right: 0%;margin-left: 0%;overflow: hidden;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: middle;width: 6px;height: 6px;box-sizing: border-box;"><section style="transform: rotate(0.1deg);-webkit-transform: rotate(0.1deg);-moz-transform: rotate(0.1deg);-o-transform: rotate(0.1deg);box-sizing: border-box;"><section style="width: 6px;height: 6px;border-radius: 100%;background-color: rgb(37, 102, 0);box-sizing: border-box;"></section></section></section><section class="" style="display: inline-block;vertical-align: middle;width: 100%;margin-right: -6px;margin-left: -7px;border-bottom: 2px solid rgb(37, 102, 0);box-sizing: border-box;"></section><section class="" style="display: inline-block;vertical-align: middle;width: 6px;height: 6px;border-radius: 100%;background-color: rgb(37, 102, 0);box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: -12px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: top;width: 15%;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-right: 0%;margin-left: 0%;text-align: center;font-size: 14px;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: top;box-sizing: border-box;"><section class="" style="width: 2em;padding: 0.3em 0.5em;background-color: rgb(214, 51, 60);color: rgb(255, 255, 255);box-sizing: border-box;"><p style="box-sizing: border-box;">3</p></section><section style="height: 0.5em;width: 2em;border-left: 1em solid rgb(214, 51, 60);border-right: 1em solid rgb(214, 51, 60);border-bottom: 1em solid transparent !important;box-sizing: border-box;"></section></section></section></section></section><section class="" style="display: inline-block;vertical-align: top;width: 85%;padding-right: 13px;padding-left: 5px;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 5px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;">将上面的网络地址中的网络地址部分不变，主机地址变为全1，结果就是广播地址。</p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section class="" style="max-width: 100%;vertical-align: middle;display: inline-block;overflow: hidden !important;box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="box-sizing: border-box;"><section class="" style="box-sizing: border-box;"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 10px;margin-right: 0%;margin-left: 0%;overflow: hidden;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: middle;width: 6px;height: 6px;box-sizing: border-box;"><section style="transform: rotate(0.1deg);-webkit-transform: rotate(0.1deg);-moz-transform: rotate(0.1deg);-o-transform: rotate(0.1deg);box-sizing: border-box;"><section style="width: 6px;height: 6px;border-radius: 100%;background-color: rgb(37, 102, 0);box-sizing: border-box;"></section></section></section><section class="" style="display: inline-block;vertical-align: middle;width: 100%;margin-right: -6px;margin-left: -7px;border-bottom: 2px solid rgb(37, 102, 0);box-sizing: border-box;"></section><section class="" style="display: inline-block;vertical-align: middle;width: 6px;height: 6px;border-radius: 100%;background-color: rgb(37, 102, 0);box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: -12px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: top;width: 15%;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-right: 0%;margin-left: 0%;text-align: center;font-size: 14px;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: top;box-sizing: border-box;"><section class="" style="width: 2em;padding: 0.3em 0.5em;background-color: rgb(214, 51, 60);color: rgb(255, 255, 255);box-sizing: border-box;"><p style="box-sizing: border-box;">4</p></section><section style="height: 0.5em;width: 2em;border-left: 1em solid rgb(214, 51, 60);border-right: 1em solid rgb(214, 51, 60);border-bottom: 1em solid transparent !important;box-sizing: border-box;"></section></section></section></section></section><section class="" style="display: inline-block;vertical-align: top;width: 85%;padding-right: 13px;padding-left: 5px;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 5px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;">地址范围就是含在本网段内的所有主机</p><p style="box-sizing: border-box;">网络地址+1即为第一个主机地址，广播地址-1即为最后一个主机地址，由此看出：</p><p style="box-sizing: border-box;">地址范围：网络地址+1 至 广播地址-1</p><p style="box-sizing: border-box;">即：192.168.100.1 至192.168.100.254</p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="box-sizing: border-box;"><section class="" style="box-sizing: border-box;"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 10px;margin-right: 0%;margin-left: 0%;overflow: hidden;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: middle;width: 6px;height: 6px;box-sizing: border-box;"><section style="transform: rotate(0.1deg);-webkit-transform: rotate(0.1deg);-moz-transform: rotate(0.1deg);-o-transform: rotate(0.1deg);box-sizing: border-box;"><section style="width: 6px;height: 6px;border-radius: 100%;background-color: rgb(37, 102, 0);box-sizing: border-box;"></section></section></section><section class="" style="display: inline-block;vertical-align: middle;width: 100%;margin-right: -6px;margin-left: -7px;border-bottom: 2px solid rgb(37, 102, 0);box-sizing: border-box;"></section><section class="" style="display: inline-block;vertical-align: middle;width: 6px;height: 6px;border-radius: 100%;background-color: rgb(37, 102, 0);box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: -12px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: top;width: 15%;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-right: 0%;margin-left: 0%;text-align: center;font-size: 14px;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: top;box-sizing: border-box;"><section class="" style="width: 2em;padding: 0.3em 0.5em;background-color: rgb(214, 51, 60);color: rgb(255, 255, 255);box-sizing: border-box;"><p style="box-sizing: border-box;">5</p></section><section style="height: 0.5em;width: 2em;border-left: 1em solid rgb(214, 51, 60);border-right: 1em solid rgb(214, 51, 60);border-bottom: 1em solid transparent !important;box-sizing: border-box;"></section></section></section></section></section><section class="" style="display: inline-block;vertical-align: top;width: 85%;padding-right: 13px;padding-left: 5px;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 5px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;">主机的数量=2^X（^就是乘方符号，X就是二进制的主机位数）-2。</p><p style="box-sizing: border-box;">减2是因为主机不包括网络地址和广播地址，本例二进制的主机位数是8位。</p><p style="box-sizing: border-box;">即：主机的数量=2^8-2=254。</p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="box-sizing: border-box;"><section class="" style="box-sizing: border-box;"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section class="" style="margin-bottom: -12px;text-align: center;box-sizing: border-box;"><section style="display: inline-block;vertical-align: bottom;width: 6px;box-sizing: border-box;"><section style="width: 2px;margin: auto;height: 16px;background-color: rgb(17, 19, 22);box-sizing: border-box;"></section><section style="width: 6px;height: 6px;border-radius: 50%;background-color: rgb(17, 19, 22);box-sizing: border-box;"></section></section><section style="display: inline-block;vertical-align: bottom;width: 60%;box-sizing: border-box;"></section><section style="display: inline-block;vertical-align: bottom;width: 6px;box-sizing: border-box;"><section style="width: 2px;margin: auto;height: 16px;background-color: rgb(17, 19, 22);box-sizing: border-box;"></section><section style="width: 6px;height: 6px;border-radius: 50%;background-color: rgb(17, 19, 22);box-sizing: border-box;"></section></section></section><section class="" style="margin-left: auto;transform: rotate(0deg);-webkit-transform: rotate(0deg);-moz-transform: rotate(0deg);-o-transform: rotate(0deg);margin-bottom: -5px;width: 5px;height: 5px;background-color: rgb(255, 255, 255);box-sizing: border-box;"></section><section class="" style="border-right: 5px solid rgb(214, 240, 252);border-bottom: 5px solid rgb(214, 240, 252);border-top-color: rgb(214, 240, 252);border-left-color: rgb(214, 240, 252);box-sizing: border-box;"><section class="" style="background-color: rgb(255, 222, 3);padding: 10px;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="box-sizing: border-box;"><section class="" style="text-align: center;box-sizing: border-box;"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">【例子2】</strong></p><p style="box-sizing: border-box;">IP地址 128.36.199.3 </p><p style="box-sizing: border-box;">子网掩码 255.255.240.0</p></section></section></section></section></section><section class="" style="transform: rotate(0deg);-webkit-transform: rotate(0deg);-moz-transform: rotate(0deg);-o-transform: rotate(0deg);margin-top: -5px;width: 5px;height: 5px;background-color: rgb(255, 255, 255);box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-right: 0%;margin-left: 0%;overflow: hidden;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: middle;width: 6px;height: 6px;box-sizing: border-box;"><section style="transform: rotate(0.1deg);-webkit-transform: rotate(0.1deg);-moz-transform: rotate(0.1deg);-o-transform: rotate(0.1deg);box-sizing: border-box;"><section style="width: 6px;height: 6px;border-radius: 100%;background-color: rgb(37, 102, 0);box-sizing: border-box;"></section></section></section><section class="" style="display: inline-block;vertical-align: middle;width: 100%;margin-right: -6px;margin-left: -7px;border-bottom: 2px solid rgb(37, 102, 0);box-sizing: border-box;"></section><section class="" style="display: inline-block;vertical-align: middle;width: 6px;height: 6px;border-radius: 100%;background-color: rgb(37, 102, 0);box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: -12px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: top;width: 15%;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-right: 0%;margin-left: 0%;text-align: center;font-size: 14px;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: top;box-sizing: border-box;"><section class="" style="width: 2em;padding: 0.3em 0.5em;background-color: rgb(214, 51, 60);color: rgb(255, 255, 255);box-sizing: border-box;"><p style="box-sizing: border-box;">1</p></section><section style="height: 0.5em;width: 2em;border-left: 1em solid rgb(214, 51, 60);border-right: 1em solid rgb(214, 51, 60);border-bottom: 1em solid transparent !important;box-sizing: border-box;"></section></section></section></section></section><section class="" style="display: inline-block;vertical-align: top;width: 85%;padding-right: 13px;padding-left: 5px;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 5px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;">将IP地址和子网掩码换算为二进制，子网掩码连续全1的是网络地址，后面的是主机地址。虚线前为网络地址，虚线后为主机地址。</p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section class="" style="max-width: 100%;vertical-align: middle;display: inline-block;overflow: hidden !important;box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="box-sizing: border-box;"><section class="" style="box-sizing: border-box;"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 10px;margin-right: 0%;margin-left: 0%;overflow: hidden;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: middle;width: 6px;height: 6px;box-sizing: border-box;"><section style="transform: rotate(0.1deg);-webkit-transform: rotate(0.1deg);-moz-transform: rotate(0.1deg);-o-transform: rotate(0.1deg);box-sizing: border-box;"><section style="width: 6px;height: 6px;border-radius: 100%;background-color: rgb(37, 102, 0);box-sizing: border-box;"></section></section></section><section class="" style="display: inline-block;vertical-align: middle;width: 100%;margin-right: -6px;margin-left: -7px;border-bottom: 2px solid rgb(37, 102, 0);box-sizing: border-box;"></section><section class="" style="display: inline-block;vertical-align: middle;width: 6px;height: 6px;border-radius: 100%;background-color: rgb(37, 102, 0);box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: -12px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: top;width: 15%;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-right: 0%;margin-left: 0%;text-align: center;font-size: 14px;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: top;box-sizing: border-box;"><section class="" style="width: 2em;padding: 0.3em 0.5em;background-color: rgb(214, 51, 60);color: rgb(255, 255, 255);box-sizing: border-box;"><p style="box-sizing: border-box;">2</p></section><section style="height: 0.5em;width: 2em;border-left: 1em solid rgb(214, 51, 60);border-right: 1em solid rgb(214, 51, 60);border-bottom: 1em solid transparent !important;box-sizing: border-box;"></section></section></section></section></section><section class="" style="display: inline-block;vertical-align: top;width: 85%;padding-right: 13px;padding-left: 5px;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 5px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="font-size: 14px;text-align: justify;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;">IP地址和子网掩码进行与运算，结果是网络地址。</p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section class="" style="max-width: 100%;vertical-align: middle;display: inline-block;overflow: hidden !important;box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="box-sizing: border-box;"><section class="" style="box-sizing: border-box;"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 10px;margin-right: 0%;margin-left: 0%;overflow: hidden;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: middle;width: 6px;height: 6px;box-sizing: border-box;"><section style="transform: rotate(0.1deg);-webkit-transform: rotate(0.1deg);-moz-transform: rotate(0.1deg);-o-transform: rotate(0.1deg);box-sizing: border-box;"><section style="width: 6px;height: 6px;border-radius: 100%;background-color: rgb(37, 102, 0);box-sizing: border-box;"></section></section></section><section class="" style="display: inline-block;vertical-align: middle;width: 100%;margin-right: -6px;margin-left: -7px;border-bottom: 2px solid rgb(37, 102, 0);box-sizing: border-box;"></section><section class="" style="display: inline-block;vertical-align: middle;width: 6px;height: 6px;border-radius: 100%;background-color: rgb(37, 102, 0);box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: -12px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: top;width: 15%;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-right: 0%;margin-left: 0%;text-align: center;font-size: 14px;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: top;box-sizing: border-box;"><section class="" style="width: 2em;padding: 0.3em 0.5em;background-color: rgb(214, 51, 60);color: rgb(255, 255, 255);box-sizing: border-box;"><p style="box-sizing: border-box;">3</p></section><section style="height: 0.5em;width: 2em;border-left: 1em solid rgb(214, 51, 60);border-right: 1em solid rgb(214, 51, 60);border-bottom: 1em solid transparent !important;box-sizing: border-box;"></section></section></section></section></section><section class="" style="display: inline-block;vertical-align: top;width: 85%;padding-right: 13px;padding-left: 5px;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 5px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="font-size: 14px;text-align: justify;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;">将上面的网络地址中的网络地址部分不变，主机地址变为全1，结果就是广播地址。</p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section class="" style="max-width: 100%;vertical-align: middle;display: inline-block;overflow: hidden !important;box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="box-sizing: border-box;"><section class="" style="box-sizing: border-box;"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 10px;margin-right: 0%;margin-left: 0%;overflow: hidden;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: middle;width: 6px;height: 6px;box-sizing: border-box;"><section style="transform: rotate(0.1deg);-webkit-transform: rotate(0.1deg);-moz-transform: rotate(0.1deg);-o-transform: rotate(0.1deg);box-sizing: border-box;"><section style="width: 6px;height: 6px;border-radius: 100%;background-color: rgb(37, 102, 0);box-sizing: border-box;"></section></section></section><section class="" style="display: inline-block;vertical-align: middle;width: 100%;margin-right: -6px;margin-left: -7px;border-bottom: 2px solid rgb(37, 102, 0);box-sizing: border-box;"></section><section class="" style="display: inline-block;vertical-align: middle;width: 6px;height: 6px;border-radius: 100%;background-color: rgb(37, 102, 0);box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: -12px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: top;width: 15%;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-right: 0%;margin-left: 0%;text-align: center;font-size: 14px;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: top;box-sizing: border-box;"><section class="" style="width: 2em;padding: 0.3em 0.5em;background-color: rgb(214, 51, 60);color: rgb(255, 255, 255);box-sizing: border-box;"><p style="box-sizing: border-box;">4</p></section><section style="height: 0.5em;width: 2em;border-left: 1em solid rgb(214, 51, 60);border-right: 1em solid rgb(214, 51, 60);border-bottom: 1em solid transparent !important;box-sizing: border-box;"></section></section></section></section></section><section class="" style="display: inline-block;vertical-align: top;width: 85%;padding-right: 13px;padding-left: 5px;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 5px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;">地址范围：网络地址+1 至 广播地址-1</p><p style="box-sizing: border-box;">即：128.36.192.1 至 128.36.207.254。</p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="box-sizing: border-box;"><section class="" style="box-sizing: border-box;"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 10px;margin-right: 0%;margin-left: 0%;overflow: hidden;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: middle;width: 6px;height: 6px;box-sizing: border-box;"><section style="transform: rotate(0.1deg);-webkit-transform: rotate(0.1deg);-moz-transform: rotate(0.1deg);-o-transform: rotate(0.1deg);box-sizing: border-box;"><section style="width: 6px;height: 6px;border-radius: 100%;background-color: rgb(37, 102, 0);box-sizing: border-box;"></section></section></section><section class="" style="display: inline-block;vertical-align: middle;width: 100%;margin-right: -6px;margin-left: -7px;border-bottom: 2px solid rgb(37, 102, 0);box-sizing: border-box;"></section><section class="" style="display: inline-block;vertical-align: middle;width: 6px;height: 6px;border-radius: 100%;background-color: rgb(37, 102, 0);box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: -12px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: top;width: 15%;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-right: 0%;margin-left: 0%;text-align: center;font-size: 14px;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: top;box-sizing: border-box;"><section class="" style="width: 2em;padding: 0.3em 0.5em;background-color: rgb(214, 51, 60);color: rgb(255, 255, 255);box-sizing: border-box;"><p style="box-sizing: border-box;">5</p></section><section style="height: 0.5em;width: 2em;border-left: 1em solid rgb(214, 51, 60);border-right: 1em solid rgb(214, 51, 60);border-bottom: 1em solid transparent !important;box-sizing: border-box;"></section></section></section></section></section><section class="" style="display: inline-block;vertical-align: top;width: 85%;padding-right: 13px;padding-left: 5px;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 5px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="box-sizing: border-box;">本例中二进制的主机位数是12<br style="box-sizing: border-box;"></p><p style="box-sizing: border-box;">所以：主机的数量=2^12-2=4094 </p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="box-sizing: border-box;"><section class="" style="box-sizing: border-box;"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin: 30px 0% 10px;box-sizing: border-box;"><section class="" style="display: inline-block;width: 100%;vertical-align: top;border-color: rgb(79, 79, 79);border-width: 1px;border-radius: 0px;border-style: solid;padding-right: 10px;padding-bottom: 10px;padding-left: 10px;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="text-align: center;margin-top: -30px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="display: inline-block;vertical-align: top;width: 18%;background-color: rgb(255, 255, 255);padding-right: 5px;padding-left: 5px;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section class="" style="max-width: 100%;vertical-align: middle;display: inline-block;overflow: hidden !important;box-sizing: border-box;"></section></section></section></section><section class="" style="display: inline-block;vertical-align: top;width: 18%;background-color: rgb(255, 255, 255);padding-right: 5px;padding-left: 5px;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="display: inline-block;width: 50px;height: 60px;vertical-align: top;overflow: hidden;background-image: url("https://mmbiz.qpic.cn/mmbiz_gif/p8CaKzvQibq593BSCAQrFJmkBsProHdutEGwiaeBkXNtVDKNoTz0Yfj4Gzfabn7KWxiar0jnuhsrQ3UgubOicXr83A/640?wx_fmt=gif");background-position: 50% 50%;background-repeat: no-repeat;background-size: contain;background-attachment: scroll;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 15px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="font-size: 18px;color: rgb(79, 79, 79);box-sizing: border-box;"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">总</strong></p></section></section></section></section></section></section></section><section class="" style="display: inline-block;vertical-align: top;width: 18%;background-color: rgb(255, 255, 255);padding-right: 5px;padding-left: 5px;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="display: inline-block;width: 50px;height: 60px;vertical-align: top;overflow: hidden;background-image: url("https://mmbiz.qpic.cn/mmbiz_gif/p8CaKzvQibq593BSCAQrFJmkBsProHdutEGwiaeBkXNtVDKNoTz0Yfj4Gzfabn7KWxiar0jnuhsrQ3UgubOicXr83A/640?wx_fmt=gif");background-position: 50% 50%;background-repeat: no-repeat;background-size: contain;background-attachment: scroll;box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-top: 15px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;"><section class="" style="font-size: 18px;color: rgb(79, 79, 79);box-sizing: border-box;"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">结</strong></p></section></section></section></section></section></section></section><section class="group-empty" style="display: inline-block;vertical-align: top;width: 18%;padding-right: 5px;padding-left: 5px;background-color: rgb(255, 255, 255);box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="box-sizing: border-box;"><section class="" style="font-size: 14px;color: rgb(79, 79, 79);text-align: justify;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;"><p style="text-align: left;white-space: normal;box-sizing: border-box;">从上面两个例子可以看出，不管子网掩码是标准的还是特殊的，计算网络地址、广播地址、主机数量时只要把地址换算成二进制，然后从子网掩码处分清楚连续1以前的是网络地址，后是主机地址进行相应计算即可。</p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="box-sizing: border-box;"><section class="" style="box-sizing: border-box;"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style="margin-right: 0%;margin-bottom: 10px;margin-left: 0%;box-sizing: border-box;"><section class="" style="display: 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