(2012年上半年上午试题71~75) At a basic level,cloud computing is simply a means of delivering IT resources as ______【C1】.Almost all

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问题 (2012年上半年上午试题71~75)
    At a basic level,cloud computing is simply a means of delivering IT resources as  ______【C1】.Almost all IT resources can be delivered as a cloud service:applications,compute power,storage capacity,networking,programming tools,even communication services and collaboration______【C2】.
    Cloud computing began as large-scale Internet service providers such as Google,Amazon,and others built out their infrastructure.An architecture emerged:massively scaled,______【C3】distributed system resources,abstracted as virtual IT services and managed as continuously configured,pooled resources.In this architecture,the data is mostly resident on ______【C4】“somewhere on the Intemet”and the application i’uns on both the“cloud servers”and the user’Sbrowser.
    Both clouds and grids are built to scale horizontally very efficiently.Both are built to withstand failures of______【C5】 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.
【C3】

选项 A、horizontally
B、vertically
C、inclined
D、decreasingly

答案A

解析
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