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Internet, intranet, WWW

12.6.2.1 distinguish features of the Internet, the World Wide Web and the Intranet  

Internet, WWW, intranet

What is the Internet?

The term 'internet' can best be understood by breaking it up into 'inter' and 'net'. Then 'net' refers to a computer network and 'inter' refers to interconnections between two or more computer networks and computers on these networks. This is how the Internet began back in the 1970s. The problem was how to connect packet-switched networks in North America and Europe. It was solved by Robert Kahn, Vint Cerf, and others, and the Internet was born.

Internet - a network of computer networks and computers using unique IP addresses and TCP/IP.

The World Wide Web

The World Wide Web (WWW), commonly known as the Web, is a system of interlinked hypertext documents accessed via the Internet. Using a web browser, users view web pages that may contain text, images, and other multimedia and navigate between them using hyperlinks.

WWW (World Wide Web) - a system of interlinked hypertext documents accessed via the Internet; also called the Web.

What is an intranet?

An intranet is a private computer network that uses Internet protocols to securely share part of an organization's information or operations with its employees. Sometimes intranet refers to an internal website.

Intranet - a private network within an organisation which may offer printer sharing, file sharing, communication, private websites etc...which uses internet technologies such as TCP/IP and web browsers.

Questions:

  1. Give definitions for the terms "Internet", "intranet", and "WWW".
  2. Explain the differences between the Internet and intranet.
  3. Explain the importance of using WWW technology.
  4. Which of these networks (Internet, Web, or Intranet) is the largest?
  5. Why do people often confuse the World Wide Web with the Internet?
  6. How does an Intranet benefit an organization?
  7. Can an Intranet exist without the Internet? Why or why not?

Exercises:

Ex 1. Fill the gaps

Ex 2. Internet and Intranet

Ex 3. Distribute descriptions into groups

 

Exam questions:

Q:

A company has an intranet site and an Internet site.
What is the difference between an intranet and Internet site? (Marks: 2)
  • An intranet site is used internally by company staff. (1)
  • The Internet site is available to members of the public as well as company staff. (1)

Q:

A company has an intranet site and an Internet site.
Contrast security measures for each of the two sites. (Marks: 2)
  • The Intranet will be secured to prevent access by non-company members either by passwords or firewall or both. (1)
  • Most Internet sites will have no security restrictions but it may use passwords or other methods to restrict access to some or all of the site. (1)

 

Категория: Types of networks | Добавил: bzfar77 (23.06.2020)
Просмотров: 8645 | Теги: Network, Hypertext, www, intranet, internet | Рейтинг: 4.0/11
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