Which of the following is a volatile memory?

The correct answer is Cache memory.

• Cache memory, also called CPU memory, is random access memory (RAM) that a computer microprocessor can access more quickly than it can access regular RAM.
• This volatile memory is typically integrated directly with the CPU chip or placed on a separate chip that has a separate bus interconnect with the CPU.

Additional Information

• The basic purpose of cache memory is to store program instructions that are frequently re-referenced by software during operation.
• Fast access to these instructions increases the overall speed of the software program.
• Examples of non-volatile memory include:
  • Flash memory.
  • Read-only memory (ROM).
  • Most types of magnetic computer storage devices (e.g. hard disk drives, floppy disks, CD, DVD and magnetic tape).
  • Optical discs.