问题
单项选择题
在小型局域网设计中，有时候我们会使用二层设计模型代替三层设计模型，为什么这样做（）
A.使用二层设计模型，只有这样，我们才可以实施VLAN技术
B.使用二层设计模型，汇聚层/核心层设备不必互连各个物理网络
C.这样的网络简单，可以节约成本，适合小型网络建设
D.采用二层设计模型，降低了网络故障发生率
答案
参考答案：C
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在小型局域网设计中，有时候我们会使用二层设计模型代替三层设计模型，为什么这样做（）
A.使用二层设计模型，只有这样，我们才可以实施VLAN技术
B.使用二层设计模型，汇聚层/核心层设备不必互连各个物理网络
C.这样的网络简单，可以节约成本，适合小型网络建设
D.采用二层设计模型，降低了网络故障发生率
参考答案：C
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| Linlin is a boy. He 1 in the No. 5 Secondary School. Every day he gets up early in the morning. Then he reads English 2 Chinese. 3 half past six he 4 breakfast. He goes to school 5 bike. Class begins at eight in the morning. There are four classes in the morning and two in the afternoon. Classes 6 over at four thirty in the afternoon. Sometimes he plays games 7 his friends. At five o'clock he leaves school. In the evening, he does his homework. He likes watching TV. But he doesn't 8 it from Monday to Friday. He can only 9 it on 10 and Sunday. | ||||
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