What is the WiFi® network?
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Wi-Fi® or WiFi® network is the most famous type of wireless network used to connect computers and share online access at home or in the office. The WiFi® network does not require cabling, but sends network traffic via radio waves. It does this using a central device that is often three components in one: a network hub, router and high -speed internet modem. For simplicity, we refer to this device as a router, although in some cases a router that has a built -in horn is purchased separately from the modem. These devices include a receiver and transmitter to send and receive data via the network to the router. The broadcast range varies up to 300 feet (~ 100 m) or more, but is quite centralized and creates what is called the network of the local area (LAN). WiFi® routers, cards and adapters use a common language or protocol that is complicated with a standard known as IEEE 802.11.
There are different generations of protocols within the 802.11nem. Generations include 802.11a, 802.11b, 802.11g and 802.11n. The first two flavors are now inheritance, but since spring 2009, 802.11g is still in extensive use with a newer and faster 802.11n on the road to replace it.
All WiFi® components in the network must support the same taste or generation of 802.11 standards for communication. If the router only supports 802.11g, WiFi® cards and adapters must also support 802.11g. If the router supports 802.11n, cards and adapters must also support 802.11n.
Some routers, cards and adapters produced during transitional periods between changing standards will be designed to support both current and new protocol for maximum flexibility. These Wiljsem devices are more expensive because the "G" and "N" networks use different frequency bands, which requires two radios instead of only one.
components made for WiFi® network can be certifiedy alliances Wi-Fi. Certification ensures that the product is fully in line with the standard it supports. Only the wireless network that has certified components is the real Wi-Fi® network according to technical standards because Wi-Fi® is a Wi-Fi alliance. However, "WiFi" or "WiFi" has been generalized to mean any wireless network that suits 802.11, whether the components are officially certified or simply sold as compatible.
When setting up the WiFi® network, it is best to use the latest available technology for the future. For home use, non -certified WiFi® components can save some money and work more than likely. If you set a wireless network for the company, the actual Wi-Fi network with certified components has been fully tested and is known to be fully satisfactory, it can be a more reasonable choice.
Standards 802.11 used in WiFi® network distinguishes it from other types of wireless communications that use radio waves such as strengthYou Bluetooth®. Bluetooth uses a weaker, less robust radio belt that travels a much shorter distance of up to about 30 feet (~ 10 m). Bluetooth is primarily designed to connect a personal device controlled battery for interoperability and create a network of personal area (PAN). Bluetooth could be used to pass files from a mobile phone to a computer, to synchronize a personal digital assistant with a notebook, or to connect wireless headsets with a mobile phone or MP3 player.