This document provides an overview of the key concepts and terminology related to the internet and world wide web. It discusses the major services of the internet like the web, email, file transfer, and chat. It explains how the web works using HTML, hyperlinks, browsers, and URLs. It also covers ways to access websites by typing or clicking URLs, as well as search techniques using keywords, boolean operators, and directories versus search engines.

1. Chapter2 Presenting the Internet

2. Outline The Internet’s Major Services: Understanding the World Wide Web. How the Web Works. Web Browsers and HTML Tags. URLs . Ways to Access a URL. Terminology used the Internet. Search Techniques

3. The Internet’s Major Services The World Wide Web Electronic mail News File Transfer Protocol Chat Instant messaging Online services Peer-to-peer services

4. The Internet’s Major Services Electronic mail Instantaneous transmission of documents File Transfer Protocol (FTP) Sends and receives files Chat Public real time conversation Instant messaging Private real time conversation

5. The Internet’s Major Services Internet service provider (ISP): a company that provides local or regional access to the Internet backbone.

6. Connections Dialup Connects to Internet through phone line Modem connects to the phone line Slow connection High-speed access Connect through a special line 2 – 25 times faster than dialup DSL, Cable, T1 are common

7. Understanding the WWW Enables users to view specially formatted documents, called Web pages , on the Internet, also called WWW . There is a different between the web and the internet : The Web is a service ( a system for accessing documents ) that is supported by the Internet.

8. How the Web Works Web documents can be linked together because they are created in a format known as hypertext. Hypertext : systems provide an easy way to manage large collections of data, which can include text files, pictures, sounds, movies, and more. The Web uses a special protocol, called the hypertext transfer protocol, or HTTP.

9. How the Web Works HyperText Markup Language (HTML). This language allows a document’s author to insert hypertext links , also called hyperlinks or just links in the document. HTTP and hypertext links are the foundations of the World Wide Web .

10. How the Web Works Hypertext document more commonly called a Web . Web site : is a collection of related Web pages. Publishing the page :Copying a page onto a server and, also is called posting or uploading .

11. Web Browsers and HTML Tags A browser :Software program that enables you to access hypertext documents on the Web and then open the documents on the user’s computer. Two most popular Web browsers: Microsoft Internet Explorer Netscape Navigator

12. Using a Browser And The WWW Browser starts on the home page Navigating the web Enter a URL in the browser Click a link Links are typically blue underlined words Image maps are picture links When finished, close the browser

13. Understanding The Internet Browsers Read and translate the HTML Display web content Uniform Resource Locator (URL) Address of a web page

14. Ways to Access a URL Type the URL in a browser’s address box. Click a hyperlink that is linked to that URL. Choose a URL stored in your browser’s Favorites or Bookmarks list.

15. Terminology used the Internet Bookmark Frequently visited Web page saved in a browser. Search tools: Directories Search Engines Keyword search: Searching for information by typing one or more words.

16. Searching the Web The Web is unorganized Directories Categorize the Internet Search engines Find sites by keyword

17. Search Techniques Quote the exact phrase Use the Boolean operators Avoid common words Use the site’s advanced tools

18. Boolean operators Four Boolean operators that are sometimes used in Web searches are AND OR NOT NEAR

19. Chapter 2A End of Chapter