●建筑物综合布线系统中的园区子系统是指（69)。
(69)A.由终端到信息插座之间的连线系统
C.各楼层设备之间的互连系统
B.楼层接线间到工作区的线缆系统 D.连接各个建筑物的通信系统
●如果子网172.6.32.0/20被划分为子网172.6.32.0/26,则下面的结论中正确的是
(70)。(70)A.被划分为62个子网
B.每个子网有64个主机地址
C.被划分为32个子网 每个子网有62个主机地址
D.每个子网有62个主机地址
●At a basic level, cloud computing is simply a means of delivering IT resources
as (71). Almost all IT resources can be delivered as a cloud service: applications, compute power, storage capacity, networking, programming tools, even communication services and collaboration (72).
Cloud computing began as large-scale Internet service providers such as Google, Amazon, and others built out their infrastructure. An architecture emerged: massively scaled, (73) distributed system resources, abstracted as virtual IT services and managed as continuously configured, pooled resources. In this architecture, the data is mostly resident on (74) “somewhere on the Internet” and the application runs on both the “cloud servers” and the user’s browser. Both clouds and grids are built to scale horizontally very efficiently. Both are built to withstand failures of (75) elements or nodes. Both are charged on a per-use basis. But while grids typically process batch jobs, with a defined start and end point, cloud services can be continuous. What’s more, clouds expand the types of resources available — file storage, databases, and Web services — and extend the applicability to Web and enterprise applications.
(71)A.hardware (72)A.computers
B.computers B.disks
C.services C.machine C.inclined C.servers
D.software D.tools D.decreasingly D.hard disk
(73)A.horizontally (74)A.clients
B.vertically B.middleware
2012年上半年 数据库工程师 上午试卷 第13页 （共14页）
(75)A.entire B.individual C.general D.separate
2012年上半年 数据库工程师 上午试卷 第14页14页）
（共
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