Frank wants to deploy his new application in the cloud and needs to ensure that the operating system of the host is running using a particular older version of Windows with certain packages installed. At the same time, Frank does not want to be concerned with monitoring network bandwidth. Which cloud services model is BEST suited to Frank's needs? A. Infrastructure as a Service (IaaS). B. Platform as a Service (PaaS). C. Software as a Service (SaaS). D. On-premise cloud.

CISSP Certification 2021 practice questions.
Source: https://thorteaches.com/ Free CISSP practice exam questions for the 2021 CISSP exam version.

ANSWER

The right answer is A.

 

 With IaaS, the cloud service provider (CSP) provides the hardware and tasks like backups and monitoring network bandwidth. Usually, the CSP will install the latest Windows OS but it is possible for clients to insist upon using a particular older version of the OS. In IaaS the client is responsible for installing and maintaining the middleware packages, the application code, and the data. In PaaS the CSP provides the middleware and allows the user to only develop and install the application and the data. In SaaS the CSP provides the application and the user is only responsible for the data. In an on-premise cloud, Frank’s company has to deal with the hardware, backups, network bandwidth, OS, and so forth.

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