Question 27

Flash memory describes a special type of rewritable memory that is compact and portable.

Flash memory is designed to be both rewritable and compact, making it highly portable for various electronic devices. This type of memory retains data without the need for a constant power supply, distinguishing it from other memory types.

A) Random access

Random access memory (RAM) allows data to be read and written in any order, but it is typically volatile, meaning it loses its data when power is turned off. Therefore, it does not fit the description of a rewritable memory that is compact and portable as flash memory does.

B) Cache

Cache memory is a small-sized type of volatile computer memory that provides high-speed data access to the processor. While it is fast, it does not specifically describe a compact and portable rewritable memory type like flash memory.

C) Flash

Flash memory is indeed a rewritable type of memory that is compact and portable, making it suitable for use in devices such as USB drives and memory cards. Its ability to retain data without power and its small size make it the perfect match for the question.

D) Read-only

Read-only memory (ROM) is a type of memory that is used primarily for storing firmware and is not rewritable in the same way as flash memory. As such, it does not meet the criteria of being rewritable, compact, and portable.

Conclusion

Flash memory is the only option that accurately describes a memory type that is both rewritable and portable, making it suitable for a wide range of devices. Other options either lack the rewritability aspect or do not offer the compactness and portability that flash memory provides. Thus, flash memory stands out as the definitive correct answer.