functions of the system
be concentrated in the kernel, its most
important advantage being performance. In microkernel systems in
privileged mode, only the basic functions are performed,
the main
advantages of such systems are reliability and flexibility
❖
The operating system directly interacts with the computer
hardware. Modern computer architectures offer many operating
system
support tools
❖
The operating system interacts with applications. It provides a set of
system calls to access functions implemented in the kernel. For
applications, system calls, along with system library tools, are
accessible through the application programming interface
