Computer Basic Information
Offline device is

a device which is not connected to CPU
an I/O device
None of these
a direct access storage device
a device which is connected to CPU

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Computer Basic Information
The essential difference between an operating system like Linux and one like Windows is that

Linux is proprietary, whereas Windows is not.
any programmer can modify Linux code, which is not permitted with Windows.
None of these
Windows can run with an Intel processor, whereas Linux cannot.
there are multiple versions of Linux, but only one version of Windows.

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