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Which of the following is a common misconception about the trade-offs between paging and segmentation?

medium🪤 Complexity Trap Q13 of Q15
Operating Systems - Paging vs Segmentation - Address Translation
Which of the following is a common misconception about the trade-offs between paging and segmentation?
APaging eliminates external fragmentation but can cause internal fragmentation
BPaging requires fixed-size blocks, which simplifies memory allocation
CSegmentation always provides better memory protection than paging
DSegmentation can lead to external fragmentation due to variable segment sizes
Step-by-Step Solution
  1. Step 1: Analyze Paging eliminates external fragmentation but can cause internal fragmentation

    Paging does eliminate external fragmentation but may cause internal fragmentation; this is true.
  2. Step 2: Analyze Segmentation always provides better memory protection than paging

    Segmentation provides logical division but does not inherently guarantee better protection than paging; protection depends on implementation.
  3. Step 3: Analyze Paging requires fixed-size blocks, which simplifies memory allocation

    Paging uses fixed-size pages, simplifying allocation; this is true.
  4. Step 4: Analyze Segmentation can lead to external fragmentation due to variable segment sizes

    Segmentation can cause external fragmentation due to variable segment sizes; this is true.
  5. Final Answer:

    Option C -> Option C
  6. Quick Check:

    Protection depends on hardware and OS, not solely on segmentation.
Quick Trick: Protection depends on implementation, not just segmentation
Common Mistakes:
MISTAKES
  • Assuming segmentation always improves protection
  • Ignoring internal fragmentation in paging
  • Overlooking external fragmentation in segmentation
Trap Explanation:
PITFALL
  • Option C is a misconception; candidates often overgeneralize segmentation's protection benefits.
Interviewer Note:
CONTEXT
  • Tests understanding of nuanced trade-offs and common misconceptions between paging and segmentation.
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