![Picture](/uploads/2/4/3/6/24362712/5143944.jpg)
LAN: Local Area Network
One small geographical location such as Arthur terry school. Its is a wired network. Own all the equipment.
Advantages:
High speed data transfer rates.
Generally lower in cost than a WAN.
Disadvantages:
pay for infrastructure
Not portable
One small geographical location such as Arthur terry school. Its is a wired network. Own all the equipment.
Advantages:
High speed data transfer rates.
Generally lower in cost than a WAN.
Disadvantages:
pay for infrastructure
Not portable
![Picture](/uploads/2/4/3/6/24362712/6352072.jpg)
WAN: Wide Area Network
A Large geographical area such as cities, countries and continent. Rented or leased communication equipment. e.g. the internet
Advantages:
Can connect of large distances
Connects networks
Messages can be sent very quickly to anyone else on the network. These messages can have pictures, sounds, or data included with them (called attachments).
Expensive things (such as printers or phone lines to the internet) can be shared by all the computers on the network without having to buy a different peripheral for each computer.
Disadvantages:
very expensive
Security is a real issue when many different people have the ability to use information from other computers. Protection against hackers and viruses adds more complexity and expense.
Once set up, maintaining a network is a full-time job which requires network supervisors and technicians to be employed.
A Large geographical area such as cities, countries and continent. Rented or leased communication equipment. e.g. the internet
Advantages:
Can connect of large distances
Connects networks
Messages can be sent very quickly to anyone else on the network. These messages can have pictures, sounds, or data included with them (called attachments).
Expensive things (such as printers or phone lines to the internet) can be shared by all the computers on the network without having to buy a different peripheral for each computer.
Disadvantages:
very expensive
Security is a real issue when many different people have the ability to use information from other computers. Protection against hackers and viruses adds more complexity and expense.
Once set up, maintaining a network is a full-time job which requires network supervisors and technicians to be employed.
![Picture](/uploads/2/4/3/6/24362712/227577.png)
WLAN: Wireless Local Area Network
A wireless LAN. Radio waves
Advantages:
Portable
Cheaper than LAN and WAN
Disadvantages:
limited range
Less secure
Slower than cabled links
A wireless LAN. Radio waves
Advantages:
Portable
Cheaper than LAN and WAN
Disadvantages:
limited range
Less secure
Slower than cabled links