Lucy and Kate are English girls. They are twins(双胞胎). They are studying Chinese in Beijing now. They are in Miss Gao’s class. In their class, there are fifty-two students. There are twenty-eight boys and twenty-four girls.

Where are the twins? Look, they are sitting at the back of the classroom. Lucy is in a red coat. Kate is in a yellow sweater.They are having a Chinese class. They like Chinese.

小题1:The two girls are twins. They are in a school of China.

小题2:Lucy and Kate are in the same class.

小题3:Lucy is in a yellow sweater.

小题4:Now they are studying Chinese in the classroom.

小题5:There are twenty-eight girls in their class.

[说明]

某公司拥有一个C类地址块212.253.115.0/24，网络拓扑结构如图1所示。

在PC1的DOS命令窗口在，运行arp-a命令显示PC1的ARP缓存，得到的结果如图2所示。

采用抓包工具在PC1中捕获的、由PC1以太网接口发出的某数据包的部分信息如图3所示。

请填写图1中路由器eth0网卡的相应参数。
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