The correct answer is Only 2. Key Points Secondary memory is computer memory that is non-volatile and persistent in nature and is not directly accessed by a computer/processor. It allows a user to store data that may be instantly and easily retrieved, transported, and used by applications and services. Types of Secondary Memory Disk drive, SSD, Flash, Optical Drive, USD Drive, Magnetic Tapes. Additional Information Primary memory is the main memory of the pc system. Accessing knowledge from primary memory is quicker as a result of the indoor memory of the pc. All storage device devices that area unit capable of storing high volume knowledge is stated as secondary memory Types of Primary Memory RAM, ROM.