The Internet (1) JEENA

7/24/2019 The Internet (1) JEENA

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Contents

Definition of Internet

History of Internet

Basic services of Internet

Internet domains

Uses of Internet

Disadvantages of Internet

Statistics


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What is Internet

The Internet is the global system of

interconnected computer

networks that use the

internet protocol suits

(TCP/IP) to link billions

of devices worldwide.


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The history of InternetYOU TUBE & MORE . . .

FACEBOOK

GOOLE

YAHOO

WWW

INTERNET

ETHERNET

FTP & TCP/IPARPANET

PACKET SWITCHING


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Packet Switching

Packet switching is a digital networking communications method that groups all

transmitted data into suitably sized blocks, called packets which are transmitted

via a medium that may be shared by multiple simultaneous communication

sessions.


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ARPANET

ARPANET was the network that became the basis for the Internet. Based on a

concept first published in 1967, ARPANET was developed under the direction

of the U.S. Advanced Research Projects Agency (ARPA).

In 1969, the idea became

a modest reality with the

interconnection of four

university computers. The

initial purpose was to

communicate with and

Share computer resources among

mainly scientific users at the connectedInstitutions. ARPANET took

advantage of the new idea of

sending information in small units called PACKETs

that could be routed on different paths and reconstructed at their

Destination.


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Ethernet

A system for connecting a number of computer

systems to form a local area network, with

protocols to control the passing of

information and to avoid

simultaneous transmissionb two or more s stems.


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World Wide Web

The World Wide Web (www) is an open source information space where

documents and other web resources are identified by URLs, interlinked by

hypertext links, and can be accessed via the Internet. The Web consists of pages

that can be accessed using a Web browser. The Internet is the actual network of

networks where all the information resides. Things like Telnet, FTP, Internetamin Internet Rela Chat IRC and e-mail are all art of the

internet, but are not part of the World Wide Web. The Hyper-Text

transfer Protocol (HTTP) is the method used to transfer Web

pages to your computer. With hypertext, a word or phrase can

contain a link to another Web site. All Web pages are written in

the hyper-text markup language (HTML), which

works in conjunction with HTTP.


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Basic Services of Internet

Remote login (Telnet)

E-mail

File Transfer (FTP)Network news


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Telnet

Telnet is an application layer protocol used on the internet or local area

networks to provide a bidirectional interactive text-oriented communication

facility using a virtual terminal connection.

Telnet was developed in 1969 and standardized

Internet Standard STD 8, one of the first Internet

standards. Historically, Telnet

provided access to a command-line

interface (usually, of an operating

system) on a remote host.


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E- mail

Email, short for "electronic mail," is one of the most widely used features of

the internet, along with the web. It allows you to send and receive messages

to and from anyone with an email address, anywhere in the world. When you

configure an email account, you must define your email address, password

and the mail servers used to send and receive messages.

Fortunately, most webmail services configure

your account automatically, so you only need to

enter your email address and password.

Besides the email address and password,

you may also have to enter the incoming and

outgoing mail servers and enter the correct

port numbers for each one.


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File Transfer

The file transfer tool FTP is another client-server application, used to retrieve

files from a remote machine. Two kinds of access are possible:

Identified (with account and password) and

Anonymous (no account or password required).

Most public archive sites operateanon mous FTP servers. Until earl 1995

FTP data accounted for by far the

largest amount of traffic on the Internet

(about one third of the total traffic in bytes).

A related service Archie provides

an indexing facility for anonymous FTP archives,

making it easier to find FTP

resources.


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Network News Transfer Protocol

The Network News Transfer Protocol (NNTP) is an application protocol used for

transporting Usenet news articles (net news) between news servers and for

reading and posting articles by end user client applications

Network News is the Internet equivalent

of a discussion group or bulletin board.

News is organized hierarchically into

broad topics called newsgroups

dealing with particular themes,

for example comp.lang.c++ for the C++programming language.


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Internet Browsers

An internet browser is the program that you use to access the internet and view

web pages on the computer. Although browsers are primarily intended to use the

World Wide Web, they can also be used to access information provided by web

servers in private networks or files in file systems. The major web browsers are

Firefox, Internet Explorer/ Microsoft Edge, Google Chrome, Opera, and Safari.


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Internet Search Engines

Google, Excite, Lycos, AltaVista, Infoseek, and Yahoo are all search engines.

They index millions of sites on the Web, so that Web surfers like you and me

can easily find Web sites with the information we want. By creating

indexes, or large databases of Web sites (based on titles, keywords, and the

text in the pages), search engines can locate relevant Web sites when users

enter search terms or phrases. When

you are looking for something using a

search engine, it is a good idea to use words

like AND, OR, and NOT to specify your search.

Using these boolean operators, you can usually

get a list of more relevant sites.


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Internet Domain

A domain name is an identification string that defines a realm of

administrative autonomy, authority or control within the Internet. Domain

names are formed by the rules and procedures of the Domain Name System

(DNS). Any name registered in the DNS is a domain name.


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Uses of Internet

Now a days Internet is using for anything everywhere . Following are the main

areas of internet usage:

Research

Education

Information

Entertainment

Social network

Communication

Commerce & trade

Financial transactions &

many more


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Disadvantages of Internet

Although there are many advantages, internet has some disadvantages as listed

below:

Internet frauds

Pornography

Wastage o t me

Cheater sites

Wrong information

Hackers & virus

Addiction to Internet &

many more


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Statistics


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een ohny

The Internet (1) JEENA

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