An organization has decided to start using cloud-provided services. Which cloud service allows the organization to install its own operating system on a virtual machine?
The correct cloud service model is infrastructure as a service, so the answer is D. IaaS gives the customer virtualized infrastructure such as compute, storage, and networking while leaving operating system installation and management under the customer’s control. That is the model used when an organization wants to deploy its own OS on a cloud virtual machine. SaaS is the opposite end of the stack: the provider delivers a finished application, and the customer normally does not manage the operating system or runtime. PaaS gives developers a platform for application deployment but still abstracts the underlying OS more than IaaS. Network as a service is not the best match to “install its own operating system on a virtual machine.” CCNA 200-301 v1.1 Network Fundamentals includes cloud service models, and this question tests the boundary between SaaS, PaaS, and IaaS. Reference: Cisco CCNA cloud fundamentals and Cisco 200-301 v1.1 exam topics.
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