Operating System (OS)
A Processor

is a sequence of instructions
is typically characterized by interactive processing and time of the CPU
is the device where information is stored
is a device that performs a sequence of operations specified by instructions in memory.
None of these

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Operating System (OS)
Memory management is :

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

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