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The disk controller uses ________ at each sector to ensure that the data is not corrupted on data retrieval.

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The disk controller uses ________ at each sector to ensure that the data is not corrupted on data retrieval.

(a) Checksum

(b) Unit drive

(c) Read disk

(d) Readsum

This question was posed to me in semester exam.

I want to ask this question from Magnetic Disk and Flash Storage in division Storage and File Structures of Database Management

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The correct answer is (a) Checksum

Easy explanation - A disk controller interfaces between the computer system and the actual hardware of the disk drive.

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