Give at least 2 reasons that modern operating systems switch from user to kernel mode to perform I/O operations, such as turning on a webcam or using a microphone. Provide 3 other examples of such I/O operations. For each example, describe the process for doing this in general terms. Are the reasons that you stated worth the overhead of switching from user mode to kernel mode, and then back to user mode? If you were to design an OS, what would you do differently?
Give at least 2 reasons that modern operating systems switch from user to kernel mode to perform I/O operations, such as turning on a webcam or using a microphone. Provide 3 other examples of such I/O operations. For each example, describe the process for doing this in general terms. Are the reasons that you stated worth the overhead of switching from user mode to kernel mode, and then back to user mode? If you were to design an OS, what would you do differently?
Fundamentals of Information Systems
9th Edition
ISBN:9781337097536
Author:Ralph Stair, George Reynolds
Publisher:Ralph Stair, George Reynolds
Chapter2: Hardware And Software
Section: Chapter Questions
Problem 9SAT
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Give at least 2 reasons that modern
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