A computer network connects two or more computers so they can share resources like printers and files. It can be wired or wireless. Based on geographic area, networks are classified as local area networks (LANs), metropolitan area networks (MANs), or wide area networks (WANs). LANs connect computers within a building or home. MANs connect buildings within a city. WANs connect across large distances from hundreds to thousands of miles, like the Internet. They allow sharing of expensive devices, easy file/data access from different locations, and remote work. However, they require maintenance and have security/connection issues.

2. COMPUTER NETWORK

3.  A computer network is a group of
interconnected computers .
 It consists of two or more computers that are
linked in order to share resources (such as
printers and CDs), exchange files, or allow
electronic communications.
 Lnked through cables, telephone lines, radio waves,
satellites, or infrared light beams.

7. Depending upon the geographical area covered by a
network, it is classified as:

9. A LAN is a network that is used
for communicating among
computer devices, usually within
an office building or home.
Is limited in size, typically
spanning a few hundred meters
Requires little wiring, typically
a single cable
)
LARGE AREA NETWORK

11. Users can communicate with each other very easily.
Users can access their files from any workstations.
When a new version comes out, it only has to be loaded
onto the server
Workstations can share peripheral devices like printers.

13. Area covered is limited
Networks are difficult to set up and need to be
maintained by skilled technicians.
Costs for equipment and technology is very
expensive WAN.
Low bandwidth therefore it is easy to lose connection

15. It is a network that is utilized across multiple buildings
Commonly used in school campuses or large companies
with multiple building geography to a single metropolitan
area
Examples of MAN: cable TV network

18. • This type of connection can connect numerous locations
together in one municipality.
• MAN can cover a wider area than a LAN
• By running a large network connectedness, information can be
disseminated more widely, rapidly and significantly.

22. A Wide Area Network is a network spanning a large
geographical area of around several hundred miles to across
the globe
The largest WAN in existence is the INTERNET.
WANs often connect multiple smaller networks, such as
local area networks (LANs) or metro area networks (MANs).
It can be connected through cable, fiber or satellite.

25. Expensive
things
(such as
printers or
phone lines
to the
internet) can
be shared
Data can be
better
controlled
when it's
centralized
and
consolidated
Share
information/
files over a
larger area
It allows
some
business
persons to
work from
home while
still being
able to
access work
interfaces.

27. allows business
persons to work
from home
Need a good firewall
to restrict outsiders
requires network
supervisors to
maintain a network
Security is a real
issue

28. ICT Mediated Education by: Kamal Deep Singh and Daljeet Kaur
http://compnetworking.about.com/od/basicnetworkingconcepts/a/network_types.ht
m
https://sites.google.com/site/vandangcdth10/introduction/advantages-and-
disadvantages
http://wiki.answers.com/Q/What_is_the_advantages_of_wide_area_network?#sli
de=1
http://net-cybercrime.blogspot.in/2013/05/definition-advantages-and-
disadvantages_2898.html
http://technology.blurtit.com/2607421/what-are-the-advantages-and-disadvantages-of-
a-metropolitan-area-network