This document describes three types of computer networks: local area networks (LANs) which connect computers in a small area like a room or home; metropolitan area networks (MANs) which connect computers across a larger area like a town; and wide area networks (WANs) which connect computers across the largest geographical areas like countries. It provides details on the transmission rates, mediums, sizes, costs and errors for each type of network.

1. 3.1.3 TYPE OF NETWORK

3. Local Area Network (LAN)
A computer network that spans a
relatively small area.
Used to interconnect computer in a
single room, department, office, school
or home.
Useful for sharing recourses & sharing
information i.e software (file & games),
hardware (printer)

4. Transmission rate  10 mbps
Transmission medium  coaxial cables.
Network size  < 2 kilometer
Few data transmission error
Cost of data transmission less

5. Metropolitan Area Network (MAN)
A computer network that spans a relatively
large area than that covered by LAN.
Used to interconnect computer in a town or
city.
Used to mean the interconnection of several
LAN by bridging them with backbone line.

6. Transmission rate  100 mbps
Transmission medium  backbone line
Network size  < 100 kilometer

9. Wide Area Network (WAN)
A computer network that spans a relatively
larger geographical area.
Typically, a WAN consists of two or more
LAN.
Used to interconnect computer in a country.
Used to provide access to computer or file
server in other location.

10. Transmission rate  156 mbps, 622
mbps
Transmission medium  no physical
connection, just use telephone line &
satellite links.
Network size  > 100 kilometer
Cost of data transmission is very high.

12. Conclusion
WAN
MAN
LAN

13. Differentiatiate
Type Geographical
area
Cost speed
LAN
Small
< 2 km
less 10 mbps
MAN Medium, large
than LAN
<100km
medium 100 mbps
WAN Largest
>100km
highest 156, 622
mbps