Computer application Chapter 2

Chapter 2 : Fundamentals of the world wide web and internet 
Internet is a worldwide collection of network that links millions of business , government agencies , educational institutions , and individuals


Evolution of internet 
1969 ARPANET becomes functional (Internet originated as ARPANET)
1984 ARPANET has more than  1000 computer links to host
1986 NSF Connects to ARPANET and becomes  internet
1995 NSF net terminates its network on the internet and resumes status as research network
1996 internet2  founded
Now more than 550 million hosts connect to the internet

Many house users connect to the internet by using high speed broadband internet .For example , Cable Internet service , DSL , Fiber to the premises FTTP, Fixed wireless , Cellular Radio Network , Wifi, Satellite Inter Service

IP address -  number that uniquely identifies each computer or devices that connected to the internet

Domain name - text for your IP address

DNS Servers - Translates domain name into its IP address

The World Wide Net
World wide net consists of worldwide collection of web pages

Web sites is a collection of related web pages and associated items

Web servers is a computer  that delivers request web pages to your computer

Web 2.0 is a websites that provides a means for users to interacts

There are many browser such as Internet explorer , Firefox , Opera , Safari , Google Chrome . Browser allow user to access web pages or web 2.0 program

Home pages is the first things that displays in web sites .Web pages provide other links to other web pages ,in other words is surfing the web. Process of receiving information from web pages is called Downloading .

A web pages has a unique address called a URL or Web address

There are 13 type of Web sites : Portal , News , Informational , Business/Marketing , Blog , Wiki ,  Online Social Network , Educational , Entertainment , Advocacy , Web application , Content Aggregator , Personal .

E-Commerce 
E-commerce is a business transaction that occurs over an electronic network .

Other internet services 
E-mail is a transmission of messages and files via a computer network. E-mail program allows to create , send , receive , forward , store , print , and delete e-mail messages

Instant messaging (IM) is a real time internet communications service

A Chat is a real time typed conversation that takes place on a computer

VoIP(Voice over IP) allow users to speak to other user over internet

FTP(File Transfer Protocol) is an internet standard that permits file uploading and downloading with other computers on the internet