Question: What is a semaphore? (Operating System) Write the pseudo-code of a semaphoresmethods. Is the incrementation or decrementation of the countervariable safe? Any race condition? Is

  1. What is a semaphore? (Operating System)
    1. Write the pseudo-code of a semaphore’smethods.
    2. Is the incrementation or decrementation of the countervariable safe? Any race condition?
    3. Is the OS aware of a semaphore?

Please explain with examples

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