2.  A network is 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. The computers on a network
may be linked through cables, telephone
lines, radio waves, satellites, or infrared light
beams.

3. There are Two most commonly
known Types of Network:
A LAN connects network devices
over a relatively about a small
distance.
LAN is typically owned, controlled
and managed by a single person or
organization.
Examples such as writing
lab, school, or building.

4. A WAN spans a large physical
distance. The Internet is the
largest WAN, spanning the
earth.

5.  A user can logon to a  If something goes wrong with
computer anywhere on the the file server the whole
network and access their network is unable to operate.
Users may use up too much of
work files from the file 
the storage space and this may
server.
cause problems on the
 Sharing printers, plotters, network
modems etc. saves money  Users may use too much
and time. bandwidth - for example when
 Computers can be listening to music files or
watching video clips -
managed centrally - with
preventing others from using
the same software installed the network facilities properly
on each one
Some Advantage Some Disadvantage