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Question

What are the two layers of I/O channels in Windows?

a.

Low-level layer and high-level layer

b.

Kernel layer and GUI layer

c.

Device layer and subsystem layer

d.

None of the above

Posted under Reverse Engineering

Answer: (a).Low-level layer and high-level layer Explanation:The I/O channels in Windows can be roughly divided into two layers: the low-level layer is the I/O system which is responsible for communicating with the hardware, and the higher-level layer is the Win32 subsystem, which is responsible for implementing the GUI and for processing user input.

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