Practice mode Operating Systems

The File Allocation Table (FAT) used by MS-DOS and FAT32 is a variation of which allocation method?

Correct answer D. Linked allocation

Explanation

FAT keeps the chain of next-block pointers in one table at the start of the volume rather than inside each data block. Each file's directory entry gives its first cluster, and the table entry for each cluster names the next one. Because the table can be cached in memory, random access is much faster than plain linked allocation, which must read every block in the chain.

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