Contents:
- Introduction
- PAN
- LAN
- MAN
- WAN
Introduction:
A computer networks vary in size, complexity and geographical spread. On the basis of geographical spread, network can be classified in PAN, LAN, MAN and WAN.
PAN(Personal Area Network):
PANs are small networks used to establish communication between a computer and other handheld devices in the proximity of up to 10 metres using wired USB connectivity or wireless systems like Bluetooth or Infrared. PANs are used to connect computers, laptops, mobiles and other IT-enabled devices to transfer files including emails, digital photos, audio and video, etc.
LAN(Local Area Network):
LAN is a privately owned computer network covering a small geographical area (small physical area), like a home, office or a building such as a school. It can cover an area spread over a few metres to a radius of a few kilometres. A LAN can be set up using wired media (UTP cables, coaxial cables, etc.) or wireless media (Infrared, Radio waves). If a LAN is set up using unguided media, it is known as WLAN (wireless LAN). The key purpose of a LAN is to share resources. LAN users can share data, programs, printer, disk, modem, etc.
MAN(Metropolitan Area Network):
MAN is larger than a LAN and can cover a city and its surrounding areas. A MAN usually interconnects a number of LANs and individual computers. It also shares the computing resources among users.A MAN is typically owned and operated by a single entity such as a government body or a large corporation.
WAN(Wide Area Network):
A WAN is a telecommunication network. This type of network spreads over a large geographical area across countries and continents. WANs are generally used to interconnect several other types of networks such as LANs, MANs, etc. They facilitate fast and efficient exchange of information at a high speed and low cost. A WAN can cover an area with a radius spanning hundreds of kilometres. The best known example of a WAN is the internet. The internet is the largest WAN spanning the entire planet.
Comparison between types of Networks:
Reference:
- NCERT for class 12 CS/IP