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  3. 2013年05月数据库系统工程师考试上午真题【基础知识】
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2013年05月数据库系统工程师考试上午真题【基础知识】

【62】根据现有的心脏病患者和非心脏病患者数据来建立模型,基于该模型诊断新的病人是否为心脏病患者,不适于用算法(62)分析。

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【63】盗窃信用卡的人的购买行为可能不同于信用卡持有者,信用卡公司通过分析不同于常见行为的变化来检测窃贼,这属于(63)分析。

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【64】从时间、地区和商品种类三个维度来分析某电器商品销售数据属于(64)

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【65】在面向对象数据库系统的数据类型中,对象属于(65)类型。

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【66】网络配置如图所示,其中使用了一台路由器、一台交换机和一台集线器,对于这种配置,下面的论断中正确的是(66)

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【67-68】把网络117.15.32.0/23划分为117.15.32.0/27,则得到的子网是(67)个。每个子网中可使用的主机地址是(68)个。

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【69】通常工作在UDP协议之上的应用是(69)

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【70】随着网站知名度的不断提高,网站访问量逐渐上升,网站负荷越来越重,针对此问题一方面可通过升级网站服务器的软硬件,另一方面可以通过集群技术,如DNS负载均衡技术来解决。在Windows的DNS服务器中通过(70)操作可以确保域名解析并实现负载均衡。

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【71-75】So it is today.Schedule disaster, functional misfits,and system bugs all arise because the left hand doesn't know what the right hand is doing.As work (71),the several teams slowly change the functions, sizes, and speeds of their own programs, and they explicitly or implicitly (72)their as sumptions about the inputs available and the uses to be made of the outputs.
For example, the implementer of a program-overlaying function may run into problems and reduce speed relying on statistics that show how (73)this function will arise inapplication programs. Meanwhile, backat the ranch,his neighbor maybe designing a major part of the supervisor so that it critically depends upon the speed of this function. This change in speed it self becomes a major specification change, and it needs to be proclaimed abroad and weighed from a system point of view.
How, then, shall teams (74)with one another?In as many ways as possible.
•Informally. Good telephone service an daclear definition of intergroup dependencies will encourage the hundreds of calls upon which common interpretation of written documents depends.
•Meetings. Regular project meetings, with one team after another giving technical briefings, are (75) . Hundreds of minor misunderstandings get smoked out this way. 
•Work book.A formal project work book must be started at the beginning.

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