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[单选题]
3．下列关于机房内防火、防水措施说法错误的是
A
A．机房内应有火灾、水灾自动报警系统 B．如果机房上层有用水设施时需加排水系统 C．机房内应放置适用于计算机机房的灭火器 D．建立应急计划和防火制度
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试题答案：
B
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7．包过滤防火墙一般不检查
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33．某企业网的网络拓扑结构如下图所示，其中防火墙采用了网络卫士防火墙3000，防火墙工作于路由和透明混合的综合模式，分配给防火墙3个接口(EO、E1、E2)的IP地址、边界路由器接口的IP地址、服务器和工作站的子网地址亦如图所标示。请写出防火墙各接口（地址、属性）和路由表的配置命令。（可使用命令：ifconfig、fwip、route）
对等层实体之间采用下列哪-一个进行通信
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1.
21. Today we remember a man who was considered one of the best teachers in the United States. Jaime Alfonso Escalante was born in 1930 in La Paz, Bolivia. Both his parents were teachers. He taught math and science in his home country for twelve years. In the 1960s, Jaime Escalante and his wife Fabiola came to the United States. During the next several years, he learned to speak English and repeated his college education and teacher training. In 1974, Mr. Escalante was hired at GarfieldHigh School to teach mathematics. The school was in a poor area of Los Angeles, California. Many of the students had serious problems with illegal drugs, gangs and violence. Many were the worst students at the school and thought to be “unteachable”. But Mr. Escalante pushed the group to work hard. He told them basic math was too easy and that they had the ability to do harder work. He told his students that he believed in them, but they must have the desire to be successful. Jaime Escalante started an advanced math program with a small group of students. Advanced Placement is a program of college-level classes and tests. In 1982, 18 of his students took the Advanced Placement test in calculus. They all passed. Officials at the testing company suspected the students of cheating. Mr. Escalante protested. He said the students were being rejected because they were Hispanic and from a poor school. He urged his students to take the test again. Twelve of the students repeated the test. And again, all of them passed. Five earned top scores. Mr. Escalante's students went on to become engineers, scientists and university professors. The advanced math program at Garfield became extremely successful over the next several years. Jaime Escalante received many teaching awards including the Presidential Medal of Excellence in Education. A movie about his success, “Stand and Deliver”, was released in nineteen eighty-eight. It influenced other teachers to use his methods.(10分)21.1 What did Mr. Escalante do after he came to the US?(2分)A. He taught math and science in a local school.B. He went to a college to learn calculus.C. He learned to speak English and got trained on teaching.D. He started an advanced math program in a college.
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蝶形单级网络的互连函数是将二进制地址的（ ）和（ ）相互交换位置。
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37．摘要
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