Internet and its History:
In the late 1960,the US Department of Defense (DOD) became interested in using computer
The US DOD founded a research agency known as Advance Research Projects Agency
(ARPA) to do research on networking .
ARPA projects include a wide area network (WAN) called ARPANET , this was infact the first
version of internet.(1969)
The main idea in the ARPA research was to develop a new approach to interconnect LANs and
WANs .This interconnection was termed as inter-network that was abbreviated as internet in the
Definition of Internet:
It is a network of networks that consists of millions of private, public, academic, business, and
government networks, of local to global scope, that are linked by a broad array of electronic,
wireless and optical networking technologies.
The term the Internet, when referring to the entire global system of IP networks, has been treated
as a proper noun and written with an initial capital letter. In the media and popular culture a trend
has also developed to regard it as a generic term or common noun and thus write it as "the
internet", without capitalization.
Advantages of Internet:
There are many advantages of internet which given as follows:
Mode of communication
Online Banking /Financial transaction
Online job search
Promote company and goods
Applications of Internet: Email,FTP,WWW:
Email or Electronic mail is a peerless method of sending message ,notes or letters from one
person to another or even many people at the same time via the internet.
Email is very fast in compared to the normal post.
Feature of Email:
One-to-one or one-to-many communication.
Physical presence of recipients is not required.
Encourages informal communication.
There are different email protocols :Post Office Protocol(POP),Interactive Mail Access
Protocol(IMAP),Simple Mail Transfer Protocol(SMTP) and Multipurpose Internet Mail