2. What is Network??????
• A network means connection of
several computers and resources with
each other.
• It allows any communication between
two computers connected on a
network.
• E.g. Sharing of resources such as
servers, printers etc.
3. LAN• LOCAL AREA NETWORK
• A small network consisting few computers
and other devices like printer, hard disk.
• Used in offices in a building etc.
• ADVANTAGES-one can share
resources, communicate and is controlled by
network administrator.
• DISADVANTAGES-Danger of viruses, slower
access to external networks, not secured.
4. WAN
• WIDE AREA NETWORK
• A network spread over a large geographical
area.
• Used in cities, countries etc.
• ADVANTAGES- all computers can access the
same services and resources, adding devices is
easy.
• DISADVANTAGES-not secured as anyone can
access the network, data transfer is slow.
5. WLAN
• WIRELESS LOCAL AREA NETWORK
• A type of network where communication is done
over short distances with radio waves or infrared
signals instead of cables.
• ADVANTAGES-all computers can access the
same resources and services.
• DISADVANTAGES-not secured.
