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CompTIA A+ Certification Practice Test 20 (Exam 220-901)

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Disk Defragmenter is a software tool used for rearranging data on magnetic drives in order to improve system performance. Defragmentation results in faster read/write operations of the magnetic hard drive's read/write heads as they can access the data sequentially without seeking data fragments in different areas of the disk (defragmentation consolidates data into smallest contiguous regions).
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