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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