WEB TECHNOLOGY AND MULTIMEDIA:KEY TERMS

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World Wide Web

World Wide Web

Is the name given to the collection of information that has grown up on computers

connected to the Internet and which is made available for anyone to access. The

information is made up of webpages.

• written using the programming language HTML

• viewed using a web browser

• contain HYPERTEXT which provides the user with clickable links to other pages on the

web.

• can contain sound, video, animation, graphics and hypertext as well as simple text

• Use Hyper Text Transfer Protocol to send pages across the internet.

The WWW could be described as a multimedia service on the internet.

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The Internet

Also known as ‘the net’. It is a network of computers, each communicating with

several other computers in the network, but not with all of them. It is a world-wide

communication system linking computers in geographically separate locations through

the use of a variety of telecommunication links such as telephone lines and satellites.

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URL

Uniform Resource Locator – a URL is a reference to the address of a resource on the

Internet. An example of a URL which addresses the CCEA website is:

http://www.ccea.org.uk.

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HTTP

Hypertext Transfer Protocol is an application protocol used on the world wide web. It

defines how data is structured and transmitted and specifies how browsers and web

servers should act in response to requests.

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IP address

Internet Protocol address. This represents a standard set of rules used to ensure the

proper transfer of information between computers on the Internet.  Every device linked to a

network using the TCP/IP protocol is identified by a unique IP address. IPv4 addresses consist of four

numbers separated with a dot(.). Each number can be in

IP addresses can be:

Static – a permanent IP address that does not change.

Dynamic – temporary addresses that are assigned each time a computer accesses the

Internet.

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Web Browser

This software allows users to view and use the web pages on the Internet. It is

responsible for requesting the text and graphics of webpages from servers on the

Internet, and assembling them for display. These are usually in HTML format. Web

browsers can be used to view any HTML pages whether users are online or offline.

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