A user wants to compress a 256KB file stored on an NTFS volume with 4KB clusters. Lempel-Ziv compression reduces the four 64KB compression units to 32KB, 31KB, 62KB, and 48KB.How much space does the compressed file take on the disk?
What will be an ideal response?
The compressed file takes up 176KB of space on disk. The system stores the 32KB,
31KB and 48KB compression units in their compressed form; together they take 111KB of
space.The 62KB compression unit is stored in its uncompressed formbecause it still takes up
16 clusters on disk, so it needs 64KB. Together, all of the compression units take 175KB of
space.This is 43.75 clusters. Because NTFS stores at most one file per cluster, the compressed
file really takes up 44 clusters, or 176KB.
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