1.2.2 Secondary Storage

Question 1

Why is secondary storage needed on a computer system? (2)

Answer 1

To store files (1) including when the computer is turned off (1)

Question 2

What are the characteristics of Magnetic Disk Storage e.g. HDD? (3)

Answer 2

Large capacity (1) relatively cheap (1) sensitive to movement due to moving parts (1)

Question 3

What are the characteristics of Solid State (flash) storage? (3)

Answer 3

Lower capacity (1) relatively expensive (1) no moving parts so not sensitive to movement (1)

Question 4

What are the characteristics of Optical Disc storage? (3)

Answer 4

Low capacity (1) very cheap per disc (1) moving parts so can’t be moved while running (1)

Question 5

List the 6 characteristics of secondary storage. (6)

Answer 5

Cost Capacity Reliability Speed Portability Durability (Computers Can Really Store Petabytes of Data)

Question 6

What are the three types of secondary storage? (3)

Answer 6

Magnetic Disk (1) Optical Disk (1) Solid State (1)