Mathematics · UNIX File System Calculations
Consider a UNIX file system with 20 direct pointers, 1 single indirect pointer, and 1 double indirect pointer in the i-node. Assume that disk blocks are 4 KB and that each pointer to a disk block requires 4 bytes. What is the maximum file size that can be supported by this design?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 120 × 4 KB + 1024 × 4 KB + 1024 × 1024 × 4 KB✓
- 21024 × 4 KB
- 31024 × 1024 × 4 KB
- 41024 × 1024 × 1024 KB
Correct answer
20 × 4 KB + 1024 × 4 KB + 1024 × 1024 × 4 KB
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