Chapter 2: Operating-System Structures
Operating System Concepts –9thEdition 2.29 Silberschatz, Galvin and Gagne ©2013 Layered Approach The operating system is divided into a number of layers (levels), each built on top of lower layers. The bottom layer (layer 0), is the hardware; the highest (layer N) is the user interface. With modularity, layers are selected such that each uses
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