（72）operating systems are used for handheld devices such as smart-phones.

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This software is compatible only with the specified operating system.

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The system must be deactivated in order to prevent the thrust reverser from operating accidentally.

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The basic unit of software that the operating system deals with in scheduling the workdone by the processor is ( ).

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Most of the host operating system provides a way for a system administrator to manually configure the IP information needed by a host. Automated configuration methods, such as （）, are required to solve the problem.

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()is a dedicated storage network that provides access to consolidated,block level storage.It is primarily used to mark storage devices accessible to servers so that the devices appear as locally attached to the operating system.

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