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18. A processor is generally put into kernel mode through the execution of a trap instruction I wil accept F too, since interrupts also put the processor kernel mode. 19. The purpose of an operating system is to manage system resources and to provide a more convenient abstract machine for programming. 20. The main difference between the use of test & set and the use of semaphores is that semaphores require the OS to do the busy waiting rather than the user program.

18. A processor is generally put into kernel mode through the execution of a trap instruction I wil accept F too, since interrupts also put the processor kernel mode. 19. The purpose of an operating system is to manage system resources and to provide a more convenient abstract machine for programming. 20. The main difference between the use of test & set and the use of semaphores is that semaphores require the OS to do the busy waiting rather than the user program.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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This is an Operating system review question. Please help me answer the review question so that i could understand it and explain.

 

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18. A processor is generally put into kernel mode through the execution of a trap instruction I wil accept F too, since interrupts also put the processor kernel mode. 19. The purpose of an operating system is to manage system resources and to provide a more convenient abstract machine for programming. 20. The main difference between the use of test & set and the use of semaphores is that semaphores require the OS to do the busy waiting rather than the user program.
Transcribed Image Text:18. A processor is generally put into kernel mode through the execution of a trap instruction I wil accept F too, since interrupts also put the processor kernel mode. 19. The purpose of an operating system is to manage system resources and to provide a more convenient abstract machine for programming. 20. The main difference between the use of test & set and the use of semaphores is that semaphores require the OS to do the busy waiting rather than the user program.
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