Question

Design of most operating system is layered, what is the advantage of layered approach to system design ?

Answer 1

With the layered approach, the bottom layer is the hardware, while the highest layer is the user interface. The main advantage is simplicity of construction and debugging. The main difficulty is defining the various layers. The main disadvantage is that the OS tends to be less efficient than other implementations.

Answer 2

Explanation:

The main advantage of the layered approach is modularity which helps in debugging and verification of the system easily. The layers are designed in such a way that it uses operation and services only if a layer below it. ... Any layer can be debugged without any concern about the rest of the layer.