Question

What are the possible variants of the layered system model?

a.

Virtual machine offering instructions to the next layer

b.

Separation of functionality into user interface layer and application logic layer

c.

Limited visibility of components to outer layers

d.

All of the above

Posted under Software Engineering

Answer: (d).All of the above Explanation:The variants of the layered system model can include the concept of a layer being viewed as a virtual machine offering instructions to the next layer, as well as the separation of functionality into a user interface layer and an application-logic layer. Additionally, variants may differ in terms of the visibility of components to outer layers, with visibility being limited to the next layer up in the most constrained case.

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