Answer:
In general a cache memory is useful because the speed of the processor is higher than the speed of the ram . so reducing the number of memory is desirable to increase performance .
Explanation:
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#hope it helps you ..
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<u>I'm pretty sure your answer is B, because Sequential Control operates during order like a schedule</u>
Sequential Control=A control system in which the individual steps are processed in a predetermined order, progression from one sequence step to the next being dependent on defined conditions being satisfied.
Tell me if I'm incorrect but, Hope this helps!