题目内容:
Cloud-computing providers offer their“services”according to differentmodels,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)
参考答案:
答案解析: