In a paging system, a process requires 7 KB of memory but is allocated one…
2024
In a paging system, a process requires 7 KB of memory but is allocated one full 8 KB page frame. What percentage of the allocated frame is lost to internal fragmentation?
Answer: A. 12.5% — ConceptInternal fragmentation is the unused space inside an allocated fixed-size block. Its percentage is found by dividing the unused space by the allocated…
- A.
12.5%
- B.
25%
- C.
50%
- D.
75%
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Show answer & explanation
Correct answer: A
Concept
Internal fragmentation is the unused space inside an allocated fixed-size block. Its percentage is found by dividing the unused space by the allocated block size and multiplying by 100.
Application
Allocated frame size = 8 KB; memory used by the process = 7 KB.
Unused space = 8 KB − 7 KB = 1 KB.
Internal fragmentation percentage = (1 KB ÷ 8 KB) × 100 = 12.5%.
Cross-check
12.5% of 8 KB is 1 KB, and 7 KB used + 1 KB unused reconstructs the full 8 KB frame.
Result
The internal fragmentation is 12.5% of the allocated frame.