Operating Systems - Paging vs Segmentation - Address Translation
In a paging system, which of the following correctly describes the order of steps to translate a virtual address to a physical address?
In a paging system, which of the following correctly describes the order of steps to translate a virtual address to a physical address?
easy🧾 Trace Q3 of Q15
Step-by-Step Solution
Solution:
Step 1: Extract page number
The virtual address is divided into page number and offset.Step 2: Access page table
Use the page number to find the corresponding frame number in the page table.Step 3: Calculate physical address
Add the offset to the frame base address to get the physical address.Final Answer:
Option A -> Option AQuick Check:
Page number first, then frame lookup, then offset addition [OK]
Quick Trick: Page number -> frame lookup -> add offset [OK]
Common Mistakes:
MISTAKES- Confusing offset and page number roles
- Assuming direct mapping without page table
- Adding offset before frame lookup
Trap Explanation:
PITFALL- Options mixing offset and page number order seem plausible but are incorrect.
Interviewer Note:
CONTEXT- Tests understanding of basic paging address translation steps.
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