World Wide Web (Internet)
The Internet is a global network that
connects billions of computers across the world with each other and to the
World Wide Web. It uses a standard internet protocol suite (TCP/IP) to connect
billions of computer users worldwide. It is set up by using cables such as
optical fibers and other wireless and networking technologies. At present, the internet is the fastest mean of sending or exchanging information and data
between computers across the world. It is believed
that the internet was developed by "The Defence Advanced Projects Agency"
(DARPA) department of the United States. And it was first connected in 1969.
Most people think
the Internet is a set of services. They might start with Facebook, Amazon,
Netflix, and Google, and then go on to list other services, such as Instagram,
Snapchat, and YouTube. They may give more general categories, such as “the Web”
or “email.” It doesn’t matter. They are all incorrect because the Internet is
none of those.
So, what is the Internet? In this book, we will learn that it is a global computer communication system that has made all the services possible. In short, the Internet has enabled the revolution that has changed the way we live, work, and play.
Understand Internet Technology
The Internet
is defined as an Information super highway, to access information over the web.
However, It can be defined in many ways as follows:
·
Internet
is a worldwide global system of interconnected computer networks.
·
Internet
uses the standard Internet Protocol (TCP/IP).
·
Every
computer in the internet is identified by a unique IP address.
·
IP
Address is a unique set of numbers (such as 110.22.33.114) that identifies a
computer location.
·
A
special computer DNS (Domain Name Server) is used to give a name to the IP
Address so that user can locate a computer by a name.
·
For
example, a DNS server will resolve a name https://www.google.com/
to a particular IP address to uniquely
identify the computer on which this website is hosted.
·
Internet
is accessible to every user all over the world.