Operating System (OS)
Memory management is :

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

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Operating System (OS)
Round-robin scheduling

allows interactive tasks quicker access to the processor
is quite complex to implement
gives each task the same chance at the processor
allows processor-bound tasks more time in the processor
None of these

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Operating System (OS)
The FIFO algorithm

executes first the job that last entered the queue
executes first the job that first entered the queue
execute first the job that has been in the queue the longest
None of these
executes first the job with the least processor needs

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