Computer Science for IGCSE & O level - Software (Section 2 - No. 34)
What does an Operating System do when a program requests an I/O (Input/Output) operation?
It directly handles the I/O request itself.
It forwards the request to the device driver.
It ignores the request and terminates the program.
It allocates more memory to the program.
解释
The OS uses device drivers to handle requests to hardware devices.