LAN and WAN definition
Difference between LAN and WAN:
 
| 
Difference  | 
LAN | 
WAN | 
| 
Definition | 
LAN is a computer network that
  connects computers in small areas. | 
WAN is a network that covers a broad
  area using private or public network transports. | 
| 
Data transfer rates | 
LAN offers high data transfer rates. | 
WAN has lower data transfer rates due
  to congestion | 
| 
Speed | 
80-90 mbps | 
10-20 mbps | 
| 
Technology | 
LANs use technologies such as
  Ethernet and Token Ring to connect to other networks. | 
WAN uses technologies such as MPLS,
  ATM, Frame Relay and X.25 for data connection over greater distances. | 
| 
Bandwidth | 
High bandwidth is available for
  transmission. | 
Low bandwidth available for
  transmission. | 
| 
Components | 
Layer 2 devices like switches,
  bridges. Layer 1 devices like hubs, repeaters. | 
Layers 3 devices Routers, Multi-layer
  Switches and Technology specific devices like ATM or Frame-relay Switches
  etc. | 
| 
Ownership | 
LAN networks can be owned up private
  companies or people that set it up at homes. | 
WAN are not owned up any one
  organization but exist under collective or distributed ownership. | 
| 
Data Transmission Error | 
Experiences fewer data transmission
  errors. | 
Experiences more data transmission
  errors. | 
| 
Cost | 
Set-up costs are low as the devices
  required to set up the networks are cheap. | 
Set-up costs are high, especially in
  remote locations where set-up is not done. However, WANs using public
  networks are cheap. | 
| 
Spread | 
The network is spread to a very small
  location. | 
The network can be spread world-wide. | 
| 
Maintenance costs | 
Maintenance costs are low as the area
  coverage is small. | 
Maintenance costs are high as the
  area coverage is world-wide. | 
| 
Congestion | 
Less congestion | 
More congestion | 
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