ITPEC IP October 2022 Question 9
ITPEC IP October 2022 — Question 9 of 100
E is the last file moved to the drawer. After A, B, C, and D fill the desk, referencing E evicts A, the least recently used file. The desk then holds B, C, D, E. References to C, B, and D refresh their recency in that order, leaving E as the least recently used. When F arrives, E is evicted.
Answer (d)
Why not others:
- A is evicted earlier when E first arrives
- B and D are recently referenced before F arrives
Key rule: LRU replacement removes the resident item whose most recent reference occurred furthest in the past.
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