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The magnetic storage chip used to provide non-volatile direct access storage of data and that have no moving parts are known as

(a) Magnetic core memory

(b) Magnetic tape memory

(c) Magnetic disk memory

(d) Magnetic bubble memory

The question was posed to me by my college director while I was bunking the class.

I would like to ask this question from Failure with Nonvolatile Storage topic in portion Recovery System of Database Management

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The correct option is (d) Magnetic bubble memory

To explain: Bubble domain visualization by using CMOS-MagView.

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