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Question

Semaphore is used for

A
synchronization
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B
dead-lock avoidence
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C
box
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D
none of these
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Solution

The correct option is A synchronization

semaphore is used for synchronization.

A semaphore is simply a variable. This variable is used to solve critical section problems and to achieve process synchronization in the multi-processing environment. A trivial semaphore is a plain variable that is changed (for example, incremented or decremented, or toggled) depending on programmer-defined conditions.


Synchronization:-

Synchronization means sharing system resources by processes in a such a way that, Concurrent access to shared data is handled thereby minimizing the chance of inconsistent data. Maintaining data consistency demands mechanisms to ensure synchronized execution of cooperating processes.


Semaphore:-

Semaphore is a variable or abstract data type used to control access to a common resource by multiple processes in a concurrent system such as a multitasking operating system. A semaphore is simply a variable. This variable is used to solve critical section problems and to achieve process synchronization in the multi-processing environment.


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