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The prevailing distributed computing mod

练习题库2022-08-02  58
问题 The prevailing distributed computing model of the current era is called ctiem servar computing.A（  ）is a solution in which the presentation, presentation logic,application logic,data manipulation and data layers are distributed between client PCs and one or more servers. A (  ) is a personal computer that does not have to be very powerful in terms of processor speed and memory because it only presents the interface to the user. A（ ）is a personal computer,notebook.computer,or workstation that is typically more powerful in terms of processor speed,memory,and storage capacity. A（作答此空  ）hosts one or more shamad database but also executes all database commands and services for information systems.A (n)（  ）hosts Internet or intranet web sites,it communicates with clients by returning to them documents and data.A.Transaction serverB.Database servererC.Application serverD.Message server
选项 A.Transaction server
B.Database serverer
C.Application server
D.Message server
答案 B
解析 现在主流的分布式计算是客户/服务器计算模式。客户/服务器系统是一种解决方案，其中表示层、表示逻辑层、应用逻辑、数据操作、数据层分布在客户的PC端与一个或多个服务器端之间。瘦客户端指的是个人电脑在处理速度、内存方面无须很强大，因为它仅仅是展示接口给用户。胖客户端是指个人电脑、笔记本、工作站在处理速度、内存、存储容量方面都很强大的一类电脑。数据库服务器控制一个或多个共享数据库，同时也执行所有数据库命令以及服务于信息系统。web服务器控制互联网、信息平台，与客户端通信，返回给客户端文件与数据。
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软件水平考试初中高级

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