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試卷年份2015年下半年
試題題型【單選題】
試題內(nèi)容

Cloud-computing providers offer their “services” according to different models, which happen to form a stack（  ）, platform as a service (Paas), software as a service (SaaS)
A、hardware as a service (Haas)
B、network as a service (NaaS)
C、infrastructure as a service (IaaS)
D、data as a service (DaaS)

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