Operating System (OS)
Memory management is :

not used on multiprogramming systems
not used in modern operating system
None of these
replaced with virtual memory on current systems
critical for even the simplest operating systems

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Operating System (OS)
Daisy chain is a device for

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

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