Operating System (OS)
Two basic types of operating systems are:

sequential and realtime
batch and timesharing
batch and interactive
None of these
sequential and direct

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Operating System (OS)
Semaphores

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

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Operating System (OS)
Daisy chain is a device for

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

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