Question: What is the main difference between user mode and kernel mode in an operating systern? User mode allows direct hardware access, kernel mode does not.

What is the main difference between "user mode" and "kernel mode" in an operating systern?
User mode allows direct hardware access, kernel mode does not.
Kernel mode can access protected memory regions, user mode cannot.
Kernel mode applications are given less priority than user mode applications.
User mode instructions can switch the CPU to kernel mode, but not vice-versa.

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