A group of two or more computer systems linked together via communication devices is called: A Network
The problem domain layer addresses how the software will execute on specific computers and networks.
A problem domain is a software engineering term that refers to all information that defines a problem and compels the solution.
A problem domain basically looks at only the area you are interested in and excludes the rest. It includes the goals the problem owner wishes to have and the context in which the problem exists. For example, if you are creating a website for selling artwork online, the problem domain will be artwork and eCommerce.
Therefore, in order to identify a problem domain, you need to know the relevant user requirements. This can be easy when you start by finding out what people (users) think the problem is.
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I believe it is ctrl f or ctrl shift f
<span>The finished product is "output." In the electronic computer, data are the raw material or input to the computer.</span>