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配置WWW服务器是UNIX操作平台的重要工作之一，而Apach是目前应用最为广泛的Web服务器产品之一， (1) 是Apache的主要配置文件。URL根目录与服务器本地目录之间的映射关系是通过指令 (2) 设定；指令Server- Admin的作用是 (3) ：而设置index.html或default.html为目录下默认文档的指令是 (4) ；如果允许以"http：//www.xxx.edu.cn/～username"方式访问用户的个人主页，必须通过 (5) 指令设置个人主页文档所在的目录。 3（）
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Packet-switching wireless networks are preferable (1) when transmissions are (2) bemuse of the way charges are (3) per packet. Circuit-switched networks are preferable for transferring large files or for other lengthy transmissions because customers are (4) for the (5) of time they use the network. 2（）
An awkward-looking character such as Cyrano de Bergerac might sniff at the suggestion, but recent scientific research shows beauty, brains and brawn may in fact all be allied, writes Dr. Raj Persaud.(46) Psychologists have concluded that we may be drawn to the stereotypically attractive because of what their faces reveal about their intelligence and success in later life. In America, research led by Professor Leslie Zebrowitz, of Brandeis University, has shown an association between facial attractive and IQ. Strangers briefly exposed to a target’s face were able to correctly judge intelligence at levels significantly better than chance.The same team also researched how a person’s attractiveness might bear relation to their intelligence. They found that good-looking people did better in IQ tests as they aged. (47) Their research sought to prove that how a person perceived himself and was perceived by others predicted how intelligent he apparently became more accurately than his past intelligence. (48) Perhaps because the more attractive people were treated as more intelligent, they ended up having more stimulating and, therefore, intelligence-enhancing lives.Does this mean that your face really could be your destiny Sociologists Dr. Ulrich Mueller and Dr. Allan Mazur, of the University of Marburg in Germany, recently analyzed the final-year photographs of the 1950’s graduates of West Point in the United States. Dominant facial appearances turned out to be a consistent predictor of later-rank attainment.Again, they believed there could be a self-fulfilling effect. (49) Because some men looked more authoritative, they naturally drew respect and obedience from others which, in turn, assisted their rise through the ranks.A team at the Royal College of Surgeons in Dublin has been investigating the sensitive subject of links between physical and mental abnormalities. Led by Doctors Robin Hennessy and John Waddington, the team used a new laser surface-scanning technique to make a 3-D analysis of how facial shape might vary with brain structure. Their findings showed that in early fetal life, brain and face development are intimately connected. From this they concluded that abnormalities in brain elaboration probably also affect face development.This, according to them, explains the striking facial features of some one with Down’s syndrome. (50) Using similar techniques, the team also demonstrated how other disorders linked to brain aberrations could be associated with facial alterations.So the very latest scientific research suggests that nobody should try to look too obviously different from average. Their research sought to prove that how a person perceived himself and was perceived by others predicted how intelligent he apparently became more accurately than his past intelligence.
In the following essay, each blank has four choices. Choose the most suitable one from the four choices and write down in the answer sheet.Open Shortest Path First (OSPF) is a (1) routing algorithm that (2) work done on the OSI IS-IS intradomain routing protocol. This routing, as compared to distance-vector routing, requires (3) processing power. The (4) algorithm is used to calculate routes. OSPF routing table updates only take place when necessary, (5) at regular intervals. 3（）
设信道带宽为3000Hz，根据尼奎斯特(Nyquist)定理，理想信道的波特率为 (1) 波特，若采用QPSK调制，其数据速率应为 (2) ，如果该信道信噪比为30dB，则该信道的带宽约为 (3) 。设信道误码率为10-5，帧长为10Kb，差错为单个错，则帧出错的概率为 (4) 。若整个报文被分成5个帧，帧出错的概率为0.1，纠错重发以报文为单位，则整个报文的平均发送次数约为 (5) 次。 5（）
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