Wireless Networks

A wireless network uses radio waves to connect devices such as laptops to the Internet and to your business network and its applications. When you connect a laptop to a Wi-Fi hotspot at a cafe, hotel, airport lounge, or other public place, you're connecting to that business's wireless network. A wired network connects devices to the Internet or other network using cables. The most common wired networks use cables connected to Ethernet ports on the network router on one end and to a computer or other device on the cable's opposite end.

A wireless network uses radio waves to connect devices such as laptops to the Internet and to your business network and its applications. When you connect a laptop to a Wi-Fi hotspot at a cafe, hotel, airport lounge, or other public place, you're connecting to that business's wireless network. A wired network connects devices to the Internet or other network using cables. The most common wired networks use cables connected to Ethernet ports on the network router on one end and to a computer or other device on the cable's opposite end.

The total network bandwidth depends on how dispersive the medium is (more dispersive medium generally has better total bandwidth because it minimises interference), how many frequencies are available, how noisy those frequencies are, how many aerials are used and whether directional antenna are in use, whether nodes employ power control and so on.

Cellular wireless networks generally have good capacity, due to their use of directional aerials, and their ability to reuse radio channels in non-adjacent cells. Additionally, cells can be made very small using low power transmitters, and this fact is used in cities to give network capacity that scales linearly with population density.

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