Information & Communication Technology 1996-2003

GCSE Revision


Answers to the GCSE IT Revision Quiz

 

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  1. What do the following stand for?
    RAM Random Access Memory
    ROM Read Only Memory
    SVGA   Super Video Graphics Array
    RGB Red Green Blue
    LCD Liquid Crystal Display
    LED Light Emitting Diode
    MIDI Musical Instrument Digital Interface
    CD Compact Disc
    DVD Digital Video (or Versatile) Disc
  2. Which of the following are computer input devices?
    keyboard mouse scanner
    microphone   sensor
         
  3. Which of the following are computer output devices?
         
      plotter  
    monitor printer speaker
  4. Approximately how many A4 pages of text can be stored on one floppy disk?
    360
  5. The complete works of Shakespeare can be purchased on one CD-ROM or as a printed book. Why might it be better to
    (a) use a CD-ROM?
    Can perform faster searches / takes up less storage space / can cut and paste to own documents or transmit electronically / can include sound and video extracts.

    (b) use a book?

    Don't need to buy a computer / can't take a computer to bed easily / don't need electricity to read it.
  6. Which storage device would you use to bring a piece of work, which you have done on your computer at home, into school to enable you to continue working on it here?
    floppy disk
  7. Put these storage devices in order of access speed, starting with the fastest:
    hard disk > CD-ROM > floppy disk
  8. Put the following in order of storage capacity, starting with the highest:
    hard disk > CD-ROM > floppy disk
  9. Ink-jet printers have become very common in schools, when a laser printer can be purchased for the same price.

    (a) Give two reasons why a laser printer might be preferable.

    1. Better quality and faster printing
    2. Cheaper to run (toner cartridges are more expensive but they last very much longer).

    (b) Give one reason for not using a laser printer.

    no colour (colour laser printers are very expensive at present) / can't refill ink yourself in order to cut running costs.
  10. State four pieces of equipment that you would recommend to a blind person wishing to purchase a computer system.
    Braille keyboard / Braille printer / sound card / microphone / speakers / voice recognition software.
  11. You have been asked to set up an experiment to measure and record the effects of pollution in a local river during the summer months. You have been told that pollution causes an increase in bacterial growth which reduces the amount of dissolved oxygen available.

    (a) What items of equipment would you need?

    Oxygen sensor and data logger. (Temperature and light level sensors too perhaps).

    (b) How often would readings need to be taken?

    Take readings two or three times a day (at midday and midnight perhaps).
  12. Supermarkets now use a lot of computer equipment for many different purposes.

    (a) Give one example of where such equipment is used.

    At the checkout / in the offices / Internet shopping/etc.

    (b) Explain (describe with reasons) why this has made the job easier for the staff involved.

    The job is easier because - scanning the bar code inputs the current price automatically from a database / no mental arithmetic needed / easy updating of prices in the database instead of relabelling stock / automatic reordering of stock from the warehouse / easy production of sales figures and graphs.

    (c) Give one disadvantage of the introduction of IT into supermarkets.

    Employees have to be trained on the new system / the new system will cost money to set up / total reliance on a computer system means loss of business if it breaks down.
  13. The change over to computer equipment in the automobile and newspaper industries during the 1980's has had a devastating affect on employment in this country. However, employment in supermarkets has grown and things are generally looking much brighter for the 21st Century. Give reasons to explain both of these statements.
    Employment in some industries has declined due to the use of robotics, and desk-top publishing on a simple desktop computer. Employment in supermarkets has grown because more business can take place more quickly, hence profits increase and the shops can get bigger and better.
  14. Which letter of the alphabet would be drawn by the following list of commands?
    FORWARD 50
    REPEAT 3 [RIGHT 90 FORWARD 25]
    LEFT 135
    FORWARD 40
    The letter R
 

There have been thousands of responses to these questions during the run up to the GCSE examination. Click here to see if your school is one of the hundreds of school recorded so far.

 

BackUp Page last updated 09/02/2007 I.D.Lee, Didcot Girls' School
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