What is Semaphore
What is Semaphore? Briefly illustrate it.
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Semaphore is synchronization device to resolve critical-section trouble, can be employed to control access to the critical part for a process or thread. The main drawback (that is. similar of mutual-exclusion) needs busy waiting. It will make troubles in a multiprogramming system, where a single CPU is shared among numerous processes.
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Analysis of Layered Model A) Components organized hierarchically B) In this model of data communication every layer provides certain set of functions which other layers can call
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