Chapter 2

I was still back home I didn't attend the class, but my friend Omar send me what did the lecture teach in the class so he was very  helpful.

Chapter 2  : Fundamentals of the world wide web and internet:-

The internet

The internet is a worldwide collection of networks that links millions of businesses, government agencies, educational institutions, and more.

The Evolution of the internet:-

The evolution of the internet connection:-

An access provider is a business that provides individuals and organizations access to the internet free or for a fee.

Internet service provider (ISP) Regional ISPs provide internet access to a specific geographical area but National ISPs provide internet access in the cities and towns nationwide.

Online service provider (OSP) has many members-only features and popular OSPs include AOL(America online) and MSN (Microsoft network)

Wireless internet service provider provides wireless internet access to a computer and mobile devices and may require a wireless modem.

An IP address is a number that uniquely identifies each computer or device connected to the internet.

A domain name is the text version of an IP address 

A DNS server translates the domain name into ts associated IP address

The world wide web:-

• The world wide web, or the web, consists of a worldwide collection of electronic documents (web pages) 
• A website is a collection of related web pages and associated items
• A web server is a computer that delivers requested web pages to your computer
• web 2.0 refers to websites that provide a means for users to interact
• A web browser, or allows users to access web pages.

There are two types of search tools are search engines and subject directories

• Search engine-Finds information related to a specific topic .
• Subject directory-Classifies web pages in an organized set of categories.

Multimedia is a combination of graphics, animation, audio, video and virtual reality.

• Graphic is about pictures of arts.
• Animation is motion created by displaying a series od still images in sequence.
• Audio includes music, speech, and other stuff.
• video is a record of moving visual images
• virtual reality is a computer generated simulation of a three dimensional space.
• plug-in is a program that extends the capability of the a web browser
• web publishing is the development and maintenance of web pages

• E-commerce is a business transaction that occurs over an network

Other internet services

• Email-is the transmisson of messages and files via a computer network
• Mailing list-is a group of e-mail names and addresses given a single name
• VoIP (voice over IP)-enables users to speak to other users over the internet
• Message board-is a web-based type of discussion group

SUMMARY