The correct matching of the following pairs is
$\begin{array}{|l|l|l|l|} \hline \text{A.} & \text{Disk check} & \text{i.} & \text{Round robin} \\\hline \text{B.}& \text{Batch processing} & \text{ii.} & \text{Scan} \\\hline \text{C.} & \text{Time sharing} & \text{iii.} & \text{LIFO} \\\hline \text{D.} & \text{Stack operation} & \text{iv.} & \text{FIFO} \\\hline \end{array}$
Answer is D:
Disk check - Scan Algorithms
Batch processing - jobs should process in First in First out manner
Time sharing - Round robin based on time slice time sharing will happen
Stack operation - Last In Last Out
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