Internet and Software - 21
Network connections
A LAN (Local Area Network) is a group of computers (for example, within an office building or home) that share a
common communications line and resources. When you set up a network, you can share files, peripheral devices
(such as a printer) and an Internet connection. You can set up a LAN using wired technologies (such as Ethernet) or
wireless technologies (such as WiFi or Bluetooth).
Wireless networks
A wireless LAN or WLAN is a wireless local area network, which may link two or more computers without using wires.
Setting up a wireless network is easy and allows you to share files, peripheral devices and an Internet connection.
Note:
More detailed information is available in the InfoCentre wireless networks tutorial.
What are Benefits of a Wireless Network?
Mobility
Wireless LAN systems allow you and other users of your home network to share access to files and devices
connected to the network, for example a printer or scanner.
Also you can share an internet connection with other computers in your home.
Installation Speed and Simplicity
Installing a wireless LAN system can be fast and easy and eliminates the need to pull cables through walls and
ceilings.
Components of a Wireless LAN
To set up your Wireless network at home you need to have the following:
Access point (router)
Access points (routers) are two-way transceivers that broadcast data into the surrounding environment. Access
points act as a mediator between wired and wireless network. Most routers have a built-in DSL modem that will
allow you access to a high speed DSL internet connection. The ISP (Internet Service Provider) you have chosen
normally supplies a modem/router with the subscription to their services. Read carefully the documentation
supplied with your Access point/router for detailed setup instructions.
Network Cable (RJ45)
A network cable (also called RJ45 cable) is used to connect the host computer to the access point (see illustration
below); this type of cable may also be used to connect peripheral devices to the access point.
Wireless Adapter
An internal wireless adapter is normally already installed in your computer. A button or controls in Windows
allow you to activate or disactivate the adapter.
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