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purpose:
a mail servers is an application or computer in a network whose sole purpose is to act as a virtual post office

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1) Web hosting is a service that allows organizations and individuals to post a website or web page onto the Internet
browser must be hosted on for it to be available on the internet
2) shared, dedicated, vps and cloud
3) shared hosting is very cheap and is best for beginners
virtual private  Server and is probably the most popular service and is much more powerful than shared.
4) shared hosting has a problem with there websites as there websites all share the server’s resources.  this leads to websites going down or loading slowly for people
vps hosting is limited to only 10 to 20 people

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The Difference Between the Internet and World Wide Web:
The Internet is a massive network of networks, a networking infrastructure
It is a global network connecting millions of computers.

The World Wide Web, or simply Web, is a way of accessing information over the medium of the Internet.
it is a system of Internet servers that support specially formatted documents.
Time line of the internet:

1982

The word “Internet“ is used for the first time.

1984

Domain Name System (DNS) is established, with network addresses identified by extensions such as .com, .org, and .edu.

Writer William Gibson coins the term “cyberspace.“

1988

A virus called the Internet Worm temporarily shuts down about 10% of the world's Internet servers

1989

The World (world.std.com) debuts as the first provider of dial-up Internet access for consumers.

Tim Berners-Lee of CERN (European Laboratory for Particle Physics) develops a new technique for distributing information on the Internet. He calls it the World Wide Web. The Web is based on hypertext, which permits the user to connect from one document to another at different sites on the Internet via hyperlinks (specially programmed words, phrases, buttons, or graphics)
History of the world wide web:
March 12, 1989: British computer scientist Tim Berners-Lee circulates his "informational management proposal" at the European organization CERN, laying the foundation for the World Wide Web. He releases the code to the public on Christmas Day 1990
1993: Mosaic, the browser credited with popularizing the Web with an intuitive interface, is developed by a team led by Marc Andreessen at the University of Illinois. Mosaic is the basis for the commercial browser Netscape in 1994.
What is web1 :  Web 1.0 refers to the first stage in the World Wide Web

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Internet Service Providers (ISP) [Bradley]

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Internet Service Providers (ISP) [Bradley]

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What is the role of an ISP?:
The role of the ISP is to serve large companies by providing a direct connection from the company's network to the internet.
Examples of different ISPs:
BT, Sky, Virgin Media
Range of prices:
BT:

£35 .99 a month
18 months
Includes BT line rental
Price after 18 months £41.99
£59 .99 upfront

Sky:

£20 a month for 12 months

(^then £30 a month)

VM:
£26 a month for 12 months
12 month contract, £20.00 activation
What other services may ISPs provide?:  Provides internet services like email, access to software tools, security service and Web hosting.

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What is used to identify a website?
A: Site URLs may betray the framework and/or programming language but cannot be relied upon (e.g. file extensions such as .asp). HTTP response headers, cookies, style sheets and source comments may also give clues.

Why are domain names preferred over IP addresses?
A:For the same reason you use names instead of IPs for Google, or Yahoo, or Amazon: so that if the IP of the server changes, they only need to update the DNS record, and you the customer don't have to do anything at all.

Explain where the domain name appears in a website address
A: The websites domain name appears in the top website address bar with the header http or https when secured following :// and then having the domain name follow with the top-level domain like .com or .co.uk which are the leading two in the world. There may be some following text thereafter but that is just the sub categories of the website.

What must be considered if the user mistypes the website address?
A:  A good domain name should be short, easy to say, type and remember. If you were to speak your domain name on the radio, listeners should be able to recall your domain hours later and type it accurately into their browser. If they can then it passes the radio test. Having a good “radio” domain is especially important for businesses that rely on word-of-mouth advertising.

What else can be considered if the user mistypes the website address
A: The user may be redirected to a similar webpage that has been registered in the misspelled website address or the user may not be redirected to a website at all. If this occasion does occur the user is advised to type in whatever they can remember of the websites address into a search engine like google.com and try and match the closest result.