INTERNET

2. The Internet is a global system of interconnected
computer networks that use the standard Internet
protocol suite (often called TCP/IP, although not all
applications use TCP) to serve billions of users
worldwide. 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 Internet carries an
extensive range of information resources and services,
such as the inter-linked hypertext documents of the
World Wide Web (WWW) and the infrastructure to
support email.

3. The history of the Internet began with the development of
computers in the 1950s. This began with point-to-point
communication between mainframe computers and
terminals, expanded to point-to-point connections
between computers and then early research into packet
switching. Packet switched networks such as ARPANET,
Mark I at NPL in the UK, CYCLADES, Merit Network,
Tymnet, and Telenet, were developed in the late 1960s and
early 1970s using a variety of protocols. The ARPANET in
particular led to the development of protocols for
internetworking, where multiple separate networks could
be joined together into a network of networks.

4.  Surfing & searching the internet
 Email
 E-learning
 E-commerce
 Entertainment

5. Surfing means moving one website to
another using web browser.
Searching means exploring
various websites & web page on the
internet for desired information in other
words finding information using various
websites .

6. Electronic mail, it is also known as email or e-mail, is
a method of exchanging digital messages from an
author to one or more recipients. Modern email
operates across the Internet or other computer
networks. Some early email systems required that
the author and the recipient both be online at the
same time, in common with instant messaging.
Today's email systems are based on a store-and-
forward model. Email servers accept, forward,
deliver and store messages. Neither the users nor
their computers are required to be online
simultaneously; they need connect only briefly,
typically to an email server, for as long as it takes
to send or receive messages.

7. E-learning includes all forms of electronically
supported learning and teaching, and more
recently Edtech.
The information and communication systems,
whether networked learning or not, serve as
specific media to implement the learning process.

8. Electronic commerce, commonly known as e-
commerce or e-comm, is the buying and selling
of products or services over electronic systems such as
the Internet and other computer networks. Electronic
commerce draws on such technologies as electronic
funds transfer, supply chain management, Internet
marketing, online transaction processing, electronic data
interchange(EDI), inventory management systems, and
automated data collection systems.

9. Entertainment is an action, event or activity
that aims to entertain, amuse and interest
an audience ("audience" can consist of one
person.

10. Internet Service Providers connect customers (thought of at
the "bottom" of the routing hierarchy) to customers of
other ISPs. At the "top" of the routing hierarchy are ten or
so Tier 1 networks, large telecommunication companies
which exchange traffic directly "across" to all other Tier 1
networks via unpaid peering agreements. Tier 2
networks buy Internet transit from other ISP to reach at
least some parties on the global Internet, though they may
also engage in unpaid peering (especially for local partners
of a similar size). ISPs can use a single "upstream" provider
for connectivity, or use multihoming to provide protection
from problems with individual links. Internet exchange
points create physical connections between multiple ISPs,
often hosted in buildings owned by independent third
parties.[citation needed]

12. DIAL UP CONNECTION
WIRELESS NETWORK
BROADBAND CONNECTION

13. Dial-up Internet access is a form of Internet access that
uses the facilities of the public switched telephone
network (PSTN) to establish a dialed connection to
an Internet service provider (ISP) via telephone lines.

14. Wireless network refers to any type of computer network that is not
connected by cables of any kind. It is a method by which
homes, telecommunications networks and enterprise (business)
installations avoid the costly process of introducing cables into a
building, or as a connection between various equipment
locations. Wireless telecommunications networks are generally
implemented and administered using a transmission system called radio
waves. This implementation takes place at the physical level (layer) of the
OSI model network structure.

15. The term broadband refers to a telecommunications
signal or device of greater bandwidth, in some sense,
than another standard or usual signal or device (and
the broader the band, the greater the capacity for
traffic).

16. The Internet is a globally distributed network comprising many voluntarily
interconnected autonomous networks. It operates without a central governing
body. However, to maintain interoperability, all technical and policy aspects
of the underlying core infrastructure and the principal name spaces are
administered by the Internet Corporation for Assigned Names and
Numbers (ICANN), headquartered in Marina del Rey, California. ICANN is
the authority that coordinates the assignment of unique identifiers for use on
the Internet, including domain names, Internet Protocol (IP) addresses,
application port numbers in the transport protocols, and many other
parameters.

17. A social networking service is an online service,
platform, or site that focuses on facilitating the
building of social networks of social relations among
people who, for example, share interests, activities,
backgrounds, or real-life connections. A social
network service consists of a representation of each
user (often a profile), his/her social links, and a
variety of additional services.