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Explain what semaphores are, their usage, implementation given to avoid busy waiting and binary semaphores.
Semaphore definition
Usage for mutual exclusion and process synchronization
Implementation to avoid spinlock using block and wakeup
Binary semaphores
Why Global variables are unacceptable Global variable, for instance, are unacceptable because they break the rules of self - containment. If all procedural components are runni
Optimal page replacement An optimal page replacement algorithm has the least page fault rate of all algorithms. The algorithm states that put back the page that will not be us
Define LRU Page Replacement Algorithm LRU policy: LRU expands to least currently use. This policy suggests which we re- move a page whose last usage is farthest from current ti
examples of classification of models
Q. What are the tradeoffs concerned in rereading code pages from the file system versus using swap space to store them? Answer: If codes pages are accumulate in swap space th
What are the five major activities of an operating system in regard to file management? The creation and deletion of files The creation and deletion of directories The s
Explain Components of conflict phase of dispatch latency The conflict phase of dispatch latency has two components 1. Preemption of any process running in the kernel. 2.
how to differentiate scheduling algorithms?
Q. Why page sizes always powers of 2? Answer: Recall that paging is executed by breaking up an address into a page and offset number. It is most competent to break the address
What is File Allocation? The structure that offers the FAT file system its name is the file allocation table . In order to know what this important table does, you should fir
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