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12 - Secondary Storage

 1. What is secondary storage?

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

  Any storage device from a second-hand shop

  Volatile storage that is lost when the computer is turned off

  A way of storing data in RAM

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

  FALSE

  TRUE

 3. Hard disks contain rotating platters coated with what?
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  Vinyl

  Magnetic material

  Cotton

  Acrylic

 4. How does a hard disk store data?

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

  The speed of rotation indicates a particular letter of the alphabet

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

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

 5. Which of the following are types of optical disk? 
1.CD-ROM
2.CD-R
3.ZIP 
4.Flash memory
5.CD-RW

  All of these

  1, 2 and 5

  1 and 5

  3 and 4

 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?
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  Simultaneous storage disk

  Solid-system device

  Solid-state disk

  Soldered system device

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

  TRUE

  FALSE

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

  Lines and cross-lines

  Longitude and latitude

  Word-lines and bit-lines

  X and Y lines

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

  A maritime stable

  A boat fence

  A floating gate

  A nautical pen

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

  TRUE

  FALSE

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

  TRUE

  FALSE

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

  Words and lines

  Pages and blocks

  Clusters and areas

  Locations and zones

 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
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  All of these

  1, 4 and 5

  2 and 6

  1, 3, 4 and 5


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