Which free-space management technique uses a bitmap to indicate free a

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Module 6: I/O & File Management

20252m

Which free-space management technique uses a bitmap to indicate free and occupied blocks?

(i) Bit Vector
(ii) Indexing
(iii) Grouping
(iv) Linked List

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Answer: (i) Bit Vector

Bit vector/bitmap: each bit represents a block, 1=free, 0=allocated (or vice versa). Allows fast lookup. Grouping, linked list, counting are other methods.

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