Chapter 2: Internet and the World Wide Web

Objective:

 Explaining a basic LAN structure and network devices.

 Brief history about the internet.

 Explaining the concept of ISP.

 Explaining a few reasons for the internet being used.

 Describing different web browsers and explaining browser cookies.

 Explaining the concept of URL and Domain (Top level domain name and Domain name country codes).

 Explaining what TCP/IP is.

 Explaining differences between internet, intranet and extranet.

 Explaining different types of E-commerce and the advantages of it.

 Explaining the 10 categories of websites.

 Software applications on the web.

 Learning netiquettes.

Chapter Outline ______

 Inventor of the internet: Tim Berners-Lee.

 Role of the ISP: It refers you to a company that provides service for a fee (normally monthly).

 Other types of providers are OSP, AOL and WSP.

 Top 10 reasons for using the internet:

o Information: Largest existing library with different forms of media.

o Communication: It provides different forms of communication with other users.

o Entertainment: A lot of people use the internet for gaming, videos, etc.

o Work: It gives an alternative to the 9-5 workday as many people work from home.

o School: A lot of schools use the internet for grading, assignments, etc. o Relationships: People use the internet to build relationships via social media.

o Market: Internet is a great place for people to do research on an item before they want to buy/sell it.

o Sexuality: Primarily pornography.

o Self-expression: Internet serves as a medium for people to express their thought and views on various topics.

o Ask for help: Anonymous help can be asked for or given on the internet.

 Web browser: It’s a software application that is used to locate, retrieve and display content from the WWW.

 Today’s browsers are fully functional supporting almost all formats offered on the computer system.

o Mobile browser: Similar to a web browser, but is optimized to display content on the WWW onto a mobile device.

o Browser cookies: Pieces of information that are stored on the browser even after its use has been terminated.

 Why do I need a browser? : A browser allows you to load and access all that’s on the WWW, after you have access from an ISP.

 URL: Uniform Resource Locator; each web page has a unique URL by which it can be identified on the internet.

 Two main components of a URL: protocol and domain name.

 An internet address has four fields of numbers separated by periods. This is called an IP address.

 Top level domain names: .com, .edu, .gov, .int, .mil, .net, .org

 Domain names country code: .uk, .us, .au, .de, .fr, .nl

 Internet configuration:

o TCP/IP: Transmission Control Protocol/Internet Protocol.

o Internet.

o Intranet.

o Extranet.

 E-commerce: Any kind of business/transaction that involves exchanging information on the internet.

 Categories: o B2B: Business to Business.

o B2C: Business to Consumer.

o C2B: Consumer to Business.

o C2C: Consumer to Consumer.

 Categories of websites:

o Personal: free server space offered by ISP.

o Photo-sharing.

o Social networking.

o Entertainment.

o Mobile device.

o Blogging.

o Informational.

o Business.

o Web Directory.

o E-commerce.

 Software Application on the web:

o E-mail.

o Internet forum.

o Podcast.

o Mailing list.

o Chat.

o Instant Messaging (IM).

o Text messaging.

 Web search: Search engines are used for web search. They search the keyword on the internet and return the results which include those keywords.

 Netiquette: Behavioral standards one should maintain while using the internet.