Operating Systems - Paging vs Segmentation - Address Translation
In a segmentation system, if a virtual address is given as segment number 3 and offset 1000, which of the following best describes the address translation process?
In a segmentation system, if a virtual address is given as segment number 3 and offset 1000, which of the following best describes the address translation process?
medium🧠🧾 Concept Trace Q4 of Q15
Step-by-Step Solution
Solution:
Step 1: Identify segmentation translation
Segment number indexes segment table to get base address.Step 2: Add offset to base
Physical address = base + offset.Step 3: Evaluate options
Use offset 1000 to index segment table, then add segment number 3 to base address incorrectly uses offset to index segment table. Combine segment number and offset directly as physical address without translation ignores translation. Use segment number 3 as page number and offset 1000 as page offset in page table confuses segmentation with paging.Final Answer:
Option B -> Option BQuick Check:
Segment number indexes segment table; offset added -> correct [OK]
Quick Trick: Segment number indexes table; offset added to base [OK]
Common Mistakes:
MISTAKES- Using offset as index into segment table
- Confusing segmentation with paging address format
Trap Explanation:
PITFALL- Candidates often confuse roles of segment number and offset, leading to wrong indexing or skipping translation.
Interviewer Note:
CONTEXT- Checks detailed understanding of segmentation address translation
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