Operating System (OS)
What are the two types of Semaphore?

Counting Semaphores and Binary Semaphores
Analog Semaphores and Octal Semaphores
Critical Semaphores and System Semaphores
Digital Semaphores and Binary Semaphores

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Operating System (OS)
The dispatcher

never changes task priorities
is always small and simple
actually schedules the tasks into the processor
puts tasks in I/O wait
None of these

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