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Flash memory is a type of Electrically Erasable Programmable Read-Only Memory (EEPROM), which is a non-volatile storage technology. This means that it retains data even when the power is turned off. Flash memory utilizes a series of memory cells that can be electrically reprogrammed to store data.

One of the key characteristics of flash memory is its ability to be rewritten and erased in blocks or pages, rather than one byte at a time as in traditional EEPROM. This makes flash memory particularly suitable for applications requiring fast read and write operations, such as in USB drives, SSDs, and memory cards.

The other options pertain to different types of memory technologies. Static RAM, for example, retains data as long as power is supplied but is volatile, meaning it loses its content without power. Dynamic RAM also loses its data when the power goes out and requires constant refreshing to maintain its content. Finally, while prominent storage used in servers refers to various disk storage technologies, it doesn't specifically define the characteristics of flash memory. Therefore, the classification of flash memory as EEPROM is accurate, as it encompasses the essential features of this non-volatile memory type.