03 - Secondary Storage Devices

 1. What is secondary storage?

  Any storage device from a second-hand shop

  Volatile storage that is lost when the computer is turned off

  Non-volatile storage that is not directly accessed by the CPU

  A way of storing data in RAM

 2. Random Access Memory (RAM) is a type of secondary storage.



 3. Hard disks contain rotating platters coated with what?


  Magnetic material



 4. How does a hard disk store data?

  Small grooves on the surface of the platter respresent 0 or 1

  The temperature of the platter indicates a number from 1 to 100

  The speed of rotation indicates a particular letter of the alphabet

  Iron particles are polarised by an electromagnetic field to become either a north or south state representing 0 or 1

 5. Which of the following are types of optical disk?
4.Flash memory

  3 and 4

  All of these

  1 and 5

  1, 2 and 5

 6. What are two problems associated with optical disks?

  They are heavier than other forms of storage

  They can be damaged by light and scratches

  They are expensive to make

  They are damaged by water

 7. How do re-writeable disks work?

  A laser and magnet heat the disk to produce different states on its surface

  The speed of the disk varies to indicate the data

  Pictures are shrunk and recorded on the disk like a photographic film

  The disk is pressed to form grooves

 8. What is an SSD?

  Solid-state disk

  Simultaneous storage disk

  Soldered system device

  Solid-system device

 9. Each cell in an SSD is like a switch that can be either on or off (1 or 0).



 10. What are the rows and columns of the cells in an SSD called?

  X and Y lines

  Longitude and latitude

  Word-lines and bit-lines

  Lines and cross-lines

 11. Complete this sentence: 'Current is used to move electrons in the cell into …'

  A nautical pen

  A floating gate

  A maritime stable

  A boat fence

 12. In a NAND cell, no electrons = 1 and some electrons = 0.



 13. Data can be easily overwritten in the cells of an SSD.



 14. Groups of cells are called '….' and '…'.

  Locations and zones

  Words and lines

  Clusters and areas

  Pages and blocks

 15. What are some advantages of SSD over hard disk storage?
1. Quieter operation
2. Greater storage capacity
3. Faster access to data
4. Lower power consumption
5. More robust
6. Lower cost per gigabyte

  2 and 6

  1, 3, 4 and 5

  1, 4 and 5

  All of these