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試卷年份2017年上半年
試題題型【單選題】
試題內(nèi)容

Cloud computing is a type of Internet-based computing that provides shared computer processing resources and data to computers and other devices on demand. Advocates claim that cloud computing allows companies to avoid up-front infrastructure costs. Cloud computing now has few service form, but it is not including （）.
A、IaaS
B、PaaS
C、SaaS
D、DaaS

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