Operating System (OS)
Most of the microcomputer's operating systems like Apple DOS, MS DOS and PC DOS etc. are called disk operating systems because

they are initially stored on disk
None of these
they are partly in primary memory and partly on disk
they are available on magnetic tapes
they are memory resident

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Operating System (OS)
Daisy chain is a device for

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

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