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What are two differences among user-level threads and kernel-level threads? Under what circumstances is one type better than the other?
(1) User-level threads are unknown by the kernel, while the kernel is aware of kernel threads.
(2) User threads are listed by the thread library and the kernel schedules kernel threads.
(3) Kernel threads require not be associated with a process while every user thread belongs to a process.
Define a layer that is not of an IO management module MCS that is Management Control System is not of an IO management module
What is an effector process? The effector process is a method that verifies itself.The effector process exists in particular criteria.
COMBINED ULT/KLT APPROACHES Idea is to merge the best of both approaches Solaris is an illustration of an OS that combines both ULT and KLT Thread creation complete i
Q. Why might a system utilize interrupt-driven I/O to manage a single serial port however polling I/O to manage a front-end processor such as a terminal concentrator? A
what is network operating? explain about it design issues?
What is a Relocatable program? The Relocatable programs can be loaded almost anywhere in memory.
Message passing system:- The function of message system is to permit processes to communicate with one another without the requirement to resort (option) to shared data. Commun
What are the necessary conditions for deadlocks? 1. Mutual exclusion : Only one process at a time is able to use the resource. 2. Hold and wait : A process should be holdi
Why are segmentation and paging sometimes combined into one scheme? Segmentation and paging are often combined in order to improve upon each other. Segmented paging is helpful
Consider the subsequent resource-allocation policy. Requests as well as releases for resources are allowed at any time. If a request for resources can't be satisfied because the re
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