2. 计算机
  3. Information is no good to you if you can’t(71)it．The location dimension of information means having access to information no mat

Information is no good to you if you can’t(71)it．The location dimension of information means having access to information no mat

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问题 Information is no good to you if you can’t(71)it．The location dimension of information means having access to information no matter where you are．Ideally in other words，your location or the information’s location should not matter．You should be able to access information in，a hotel roots；at home；in the student center ofyour camp，at work，on the spur of moment while walking down the street；or even while traveling on an airplane．This location dimension is closely,related to(72)and wireless computing(and also ubiquitous computing)．
    To ke印certain information private and secure while providing remote access for employees；many businesses are creating intranets．An intranet is an(73)organization internet that is guarded against．Outside access by a special(74)feature called a Firewall (which Can be software，hardware，or a combination on it while away from the office，all you need is Web access and the password that will allow you(75)the firewall．(2011年5月试题71～75)
(75)
选项 A、pass
B、through
C、across
D、cross
答案B
解析 如果你不能获得信息，那它对你来说是没有用途的。信息的空间维度意味着无论你身在何处都可以获得信息。换言之，理论上，你的空间或者信息的空间不是问题。你可以在宾馆、家里、校园学生中心、办公室、路上甚至飞机的旅途中都可以获得信息。信息的空间维度和移动计算(和普适计算)联系紧密。
    为了让员工可以远程访问私密和安全的信息，许多组织建立了企业网。企业网是一个组织内部的网络，它能通过特殊的安全装置——防火墙(由软件、硬件或二者结合构成)防止来自外部的访问。因此，如果你所在的企业拥有内部网，那么你在办公室以外的地方想要上网获得信息，只需要具备网络浏览器软件、调制解调器和通过防火墙的密码。
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