答案及解析：[单选题]Cloud computing is a phrase used to describe a variety of computing concepts that involve a large nu - 软件水平题库- 答案窝(daanwo.com)-大学生作业答案及考资分享平台

问题：

[单选题] Cloud computing is a phrase used to describe a variety of computing concepts that involve a large number of computers （）through a real-time communication network such as the Internet. In science, cloud computing is a （）for distributed computing over a network, and means the （请作答此空）to run a program or application on many connected computers at the same time.The architecture of a cloud is developed at three layers: infrastructure, platform, and application. The infrastucture layer is built with virtualized computestorageand network resources. The platform lay-er is for general-purpose and repeated usage of the collection of software resources. The application layer is formed with a collection of all needed software modules for SaaS applications. The infrastucture layer serves as the （）for building the platform layer of the cloud. In turn, the platform layer is foundation for implementing the （）layer for SaaS application.
A.ABILITY
B.APPROACH
C.FUNCTION
D.METHOD

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答案解析：

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