The correct matching of the following pairs is: A. Disk check B. Batch processing C. Time sharing D. Stack operation vs 1. Round robin 2. Scan 3. LIFO 4. FIFO
- A. A-3, B-4, C-2, D-1
- B. A-4, B-3, C-2, D-1
- C. A-3, B-4, C-1, D-2
- D. A-2, B-4, C-1, D-3
Answer: D. A-2, B-4, C-1, D-3
Explanation: Disk Check -> SCAN algorithm. Batch processing -> FIFO (First In First Out). Time sharing -> Round Robin. Stack -> LIFO.