(ISC)2 Certified in Cybersecurity Practice Exam

Which of the following is NOT a cloud service category?

1. SaaS, IaaS, PaaS

2. SaaS, MaaS, TaaS

3. FaaS, EaaS, PaaS

4. FaaS, MaaS, TaaS

The correct answer is: SaaS, MaaS, TaaS

The answer identifies a group of terms that do not correspond to widely recognized cloud service categories. The correct choice illustrates that "MaaS" (presumably meaning "Monitoring as a Service") and "TaaS" ("Testing as a Service") are not standard cloud service models compared to "Software as a Service" (SaaS), "Infrastructure as a Service" (IaaS), and "Platform as a Service" (PaaS), which are the three main categories of cloud services. SaaS, IaaS, and PaaS are widely acknowledged and form the backbone of cloud offerings. SaaS provides software applications over the internet, IaaS offers virtualized computing resources, and PaaS supports the development and management of applications without the complexity of building and maintaining the underlying infrastructure. In contrast, the other options present combinations that reflect some recognized categories, particularly the use of "Function as a Service" (FaaS) within cloud computing, but combining them with non-standard terms like "MaaS" and "TaaS" in the second choice undermines the focus on the principal service categories in the cloud ecosystem. Thus, the classification in option B is what establishes it as the correct