D
Linux is usually offered as part of Infrastructure as a Service (IaaS) offering. IaaS instances are virtual machines which are provisioned within minutes in the cloud. When starting an IaaS instance, an image is chosen which contains the data that is deployed to the new instance. Cloud providers offer various images containing ready to run installations of both popular Linux distributions as well as own versions of Linux.
https://learning.lpi.org/en/learning-materials/010-160/1/1.1/1.1_01/
To provision a new Linux computing instance in an IaaS cloud, the cloud hosting organization typically provides a set of pre-prepared images of popular Linux distributions. These images are essentially templates that contain the necessary software and configurations to run the desired operating system and applications.
When creating a new instance, the user can select one of these images and customize it as per their requirements. Alternatively, they can upload a provider-specific configuration file that describes the desired installation
The correct answer is A, in y opinion.
If a could provider simply provides a "virtual machine" where you want to install Lunux from scratch, isn't this IaaS?
Sure it is!
And is the real IaaS, in my opinon.
Surely you can buy from the marketplace a VM with a pre-installed Linux (answer D), but this is IaaS plus another service.
You can also have a disk with Linux and PosgreSQL pre-installed, if you want.
It's IaaS, but plus more services.
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