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03 - Secondary Storage Devices

 1. What is secondary storage?

  A way of storing data in RAM

  Any storage device from a second-hand shop

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

  Volatile storage that is lost when the computer is turned off

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

  TRUE

  FALSE

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

  Acrylic

  Vinyl

  Magnetic material

 4. How does a hard disk store data?

  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

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

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

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

  1 and 5

  All of these

  1, 2 and 5

  3 and 4

 6. What are two problems associated with optical disks?

  They are expensive to make

  They are damaged by water

  They are heavier than other forms of storage

  They can be damaged by light and scratches

 7. How do re-writeable disks work?

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

  The disk is pressed to form grooves

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

  The speed of the disk varies to indicate the data

 8. What is an SSD?
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  Solid-system device

  Simultaneous storage disk

  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).

  FALSE

  TRUE

 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 maritime stable

  A nautical pen

  A floating gate

  A boat fence

 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.

  FALSE

  TRUE

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

  Pages and blocks

  Locations and zones

  Clusters and areas

  Words and lines

 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

  1, 3, 4 and 5

  2 and 6


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