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Question

What is the main characteristic of the layered system model?

a.

A hierarchy of layers

b.

Limited visibility of inner layers

c.

Single thread of control

d.

All of the above

Answer: (d).All of the above Explanation:The main characteristic of the layered system model is a hierarchy of layers, limited visibility of inner layers, single thread of control, and interaction through procedure calls.

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Q. What is the main characteristic of the layered system model?

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