问题
填空题
在路由表中，特定主机路由表项的子网掩码为______。
答案
参考答案：255.255.255.255
解析： 在路由表中，对于特定主机路由，可采用255.255.255.255作为子网掩码，采用目的主机IP地址作为目的地址；对于默认路由，则采用00.0.0作为子网掩码，默认路由器的地址作为目的地址。
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在路由表中，特定主机路由表项的子网掩码为______。
参考答案：255.255.255.255
解析： 在路由表中，对于特定主机路由，可采用255.255.255.255作为子网掩码，采用目的主机IP地址作为目的地址；对于默认路由，则采用00.0.0作为子网掩码，默认路由器的地址作为目的地址。
Boys and girls, this summer vacation is the time for you to prepare(准备) yourself for the future. The following is some advice on how to have a wonderful vacation. Exercise. You have worked hard most of the time. So you need to join in outdoor activities. They can bring your whole body into action. You can benefit(受益) from different kinds of exercise such as swimming, running and mountain climbing. Learn some life skills. One day, you will live alone. You can’t depend on your family any longer. So, you should learn to cook, wash and other skills. Go for a journey. Travel to places of interest. In this way, you’ll understand cultures that are different from that of your hometown. Beautiful sights can also make you relaxed. Enjoy family time. Don’t always sit in front of a computer alone. It’s great fun for you to spend time with your family. If you follow the advice above, your summer vacation will be filled with joy and success.
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