A network connects computers and devices together through communication devices and transmission media. There are several types of computer networks including local-area networks (LANs) for nearby devices, wide-area networks (WANs) for farther distances, campus networks, metropolitan networks, and home networks. The Internet is a worldwide collection of these networks that connects millions of organizations, schools, and individuals globally. It was first conceptualized in the 1960s as a way to allow everyone to quickly access data and programs from anywhere. The Internet is decentralized with independent computers and operators can choose which services to access.

2. Ijaz Ali

3. Computer Sciences
Networks and the Internet

4.  A network is a collection of computers and devices connected
together, often wirelessly, via communications devices and
transmission media. OR
 A network is a group of two or more computer systems linked
together.There are many types of computer networks,
including the following: local-area networks

5. There are many types of computer networks, including the
following:
local-area networks (LANs)
wide-area networks (WANs)
campus-area networks (CANs)
metropolitan-area networks MANs)
home-area networks (HANs)

6. local-area networks (LANs):
The computers are geographically close together (that is,
in the same building).
wide-area networks (WANs):
The computers are farther apart and are connected by
telephone lines or radio waves.
campus-area networks (CANs):
The computers are within a limited geographic area, such
as a campus or military base.

7. metropolitan-area networks MANs):
A data network designed for a town or city.
home-area networks (HANs):
A network contained within a user's home that
connects a person's digital devices.

9. The Internet is a worldwide collection of networks that
connects millions of businesses, government agencies,
educational institutions, and individuals.
network connecting millions of computers. More than 190
countries are linked into exchanges of data, news and
opinions.

11.  The first recorded description of the social interactions
that could be enabled through networking was a series of
memos written by J.C.R. Licklider of MIT in August 1962
discussing his "Galactic Network" concept. He envisioned
a globally interconnected set of computers through
which everyone could quickly access data and programs
from any site.

12. Unlike online services, which are centrally controlled, by design, the
Internet is decentralized. Each Internet computer, called a host, is
independent. Operators can choose which Internet services to use and
which localservices to make available to the global Internet
community. Remarkably, this anarchy by design works exceedingly
well.There are a variety of ways to access the Internet. Most online
services offer access to some Internet services. It is also possible to
gain access through a commercial Internet Service Provider (ISP).

13.  No one actually owns the Internet, and no single person or
organization controls the Internet in its entirety.The
Internet is more of a concept than an actual tangible entity,
and it relies on a physical infrastructure that
connectsnetworks to other networks.

14. The Internet is not synonymous with WorldWideWeb.The Internet is a
massive network of networks, a networking infrastructure. It connects
millions of computers together globally, forming a network in which
any computer can communicate with any other computer as long as
they are both connected to the Internet.TheWorld Wide Web, or
simply Web, is a way of accessing information over the medium of the
Internet. It is an information-sharing model that is built on top of the
Internet.