1. Huda AL-Omairl - Network91 The Internet

2. Huda AL-Omairl - Network92 What is Internet? The world’s largest computer network, consisting of millions of computers supporting tens of millions of users in hundreds of countries.

3. Huda AL-Omairl - Network93 Internet History The Internet was originally established to meet the research needs of the U.S. defense industry ( ARPANET), but it has grown to develop (NSFNET) for those colleges that did not have access to ARPANET. In 1990 most networks were leaving the slower ARPANET and linking to NSFNET, which was then called the Internet. Internet now is a huge global network serving universities, academic researchers, commercial interests, and government agencies over the world

4. Huda AL-Omairl - Network94 Internet Information The complete volume of information available through the Internet is amazing. however, because the Internet is a casual grouping of many networks, there is often no easy way to determine the location of specific information. This has led to the emergence of several portal sites and a number of popular search engines.

5. Huda AL-Omairl - Network95 Who controls the Internet? No government agency, single person, or corporate entity controls the Internet. All decisions on methods and standards are made by committees based on input from users.

6. Huda AL-Omairl - Network96 Internet Services 1.World Wide Web Hypertext-based system for finding and accessing Internet resources; the World Wide Web is one of the fastest growing and most exciting of all Internet applications. 2.(E-mail) Electronic mail. Over %80 t of the people who use the Internet regularly use it for e-mail. You can send e-mail to recipients in more than 150 countries. 3.Mailing lists Private discussion groups accessed by e- mail.

7. Huda AL-Omairl - Network97 Internet Services -cont 4- Usenet newsgroups 5- Chat 6- Telnet 7- FTP site Internet applications such as FTP, and Telnet have either been overshadowed by the growth of the World Wide Web or have seen their function absorbed into the popular Web browsers.

8. Huda AL-Omairl - Network98 1- World Wide Web (WWW) WWW is part of the internet. It is basically websites that contains pages including hypertext,and multimedia. It based on HTPP protocol Web address starts with http Web address = URL ( Uniform Resource Locator) You can view information within a website by accessing its pages, all pages are linked together. Pages are coded by a special language called HTML You need a browser to view WebPages. ex. Microsoft Internet Explorer.

9. Huda AL-Omairl - Network99 Hypertext Markup Language (HTML) Each page is made up of elements. The elements are indicated by tags. A tag is. The ending tag contains a slash....

10. Huda AL-Omairl - Network910 Html code عنوان محتويات الصفحة من عناوين وفقرات وجداول وصور ووصلات تشعبية ورموز تنسيقها

11. Huda AL-Omairl - Network911 Web Browsers They allow users to view text, data, pictures, animation, and video. A Web page contains instructions to a browser about how to display items. Browsers have “Favorite menu “ to save all the URLs needed You may need to install addition plug ins to show some special data like Java, Active-X, Examples of browsers: Microsoft Internet Explorer, Netscape Navigator

12. Huda AL-Omairl - Network912 Search Engine Each search engine has its own database of websites. You can search either by simple or advanced search. Ex: Altavista, Yahoo, Lycos, Excite, HotBot, WebCrawler, Infoseek, and Magellan

13. Huda AL-Omairl - Network913 2- Electronic Mail ( Email) The most used service. It has many advantages : –Very simple to use –High Speed –Free of charge –Suitable for all times ( Receiving computer will group the messages together until the person open them ) –File transfer (attachment) Email address consist of Person@domain.comPerson@domain.com Person : the user account Domain: is the company providing the service. Com: is the type of company ( edu, net, org, gov, mil, sa) You can use web browser to send emails OR you can use special mail programs like : Microsoft outlook Express, Eudora

14. Huda AL-Omairl - Network914 3- Mailing List A list of emails (members) can send to each other by email. Users subscribe and automatically receive copies of all e-mail messages. Can be sorted according to topics. Managed in two ways : –Automatically by a program like Listserv http://www.lsoft.com/products/listserv.asp –Managed by a person like Yahoo group

15. Huda AL-Omairl - Network915 4- Usenet newsgroups Usenet newsgroups contain articles posted by Internet and Usenet subscriber. Most newsgroups are concerned with a single subject, and the range of subjects throughout Usenet is simply phenomenal; if people are interested in a topic, you will find a newsgroup for that topic.

16. Huda AL-Omairl - Network916 5- Chat A service used to connect people together by text, voice, and video. Can be accessed by browsers or by special programs

17. Huda AL-Omairl - Network917 6- Telnet Your computer becomes a terminal, accessing another computer information and programs. Many servers on the internet provide this service. You can use software to access Telnet like NetTerm, Microsoft Telnet

18. Huda AL-Omairl - Network918 7- FTP sites Uses FTP protocol ( File Transfer Protocol) Data is saved on servers, compressed to save space. Data can be free software, upgrading files, multimedia files and other types

19. Huda AL-Omairl - Network919 Internet Access Internet access can be by: –dial-up through one of the many Internet Service Providers (ISP). Using a modem. –a permanent network connection ( leased line)

20. Huda AL-Omairl - Network920 How does the Internet work? The Internet uses TCP/IP protocols Internet computers run many different operating systems, including Microsoft Windows 2000, and many variations of Unix.