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Answer : 4 All of the above Explanation : Answer: D) All of the above Explanation: A computer has two types of memory.1. Non-volatile and2. Volatile. Volatile memory is computer memory that requires power to maintain the stored information. * It is a temporary memeory which cannot contain information permanently.Example :: RAM or Random Access Memory Non-volatile memory is computer memory that can retain the stored information even when not powered. * It is a permanent memory in which data is stored in permanently.Examples :: Hard disc, ROM, Floppy discs, Magnetic tape,...

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