Glossary
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Internet, computer and design terms
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| CDMA | Code Division Multiple Access
A protocol for wireless data and voice communication, CDMA is widely used in mobile phone networks, but also in many other data communication systems. CDMA uses a technique called “Spread Spectrum” whereby the data being transmitted is spread across multiple radio frequencies, making more efficient use of available radio spectrums. |
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| Certificate Authority | An issuer of Security Certificates used in SSL connections
(see also SSL) |
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| CGI | Common Gateway Interface
A set of rules that describes how a Web Server communicates with another piece of software on the same machine and vice-versa. Any piece of software can be a CGI program if it handles input and output according to the CGI standard. |
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| CMYK | Cyan - Magenta -Yellow - Black
The four colour printing process, used in conventional colour printing and colour inkjet printing. By overlaying these four colours a vast range of colours can be produced. |
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| Cookie | The most common meaning of ‘Cookie’ on the internet refers to a piece of information sent by a Web Server to a Web Browser that the Browser software is expected to save and to send back to the server whenever the browser makes additional requests from the Server. |
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| CSS / Cascading Style Sheet | The Cascading Style Sheets specification is a presentation language that is used to write formatting instructions (rules). These rules tell a browser how a web page should ‘look’—in terms of content layout (position, alignment) and style (typefaces, colours, borders, etc.). The CSS language was created to meet the aesthetic demands placed on HTML |
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