Operating System (OS)
Semaphores

None of these
synchronize critical resources to prevent deadlock
are used for memory management
synchronize critical resources to prevent contention
are used to do I/O

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Operating System (OS)
Daisy chain is a device for

interconnecting a number of devices to a number of controllers
All of these
None of these
connecting a number of devices to a controller
connecting a number of controllers to a device

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