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An Introduction to 802. 11 (Wi-Fi) Technologies
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| bet | 1/3 | | Sana | 02.10.2024 | | Hajmi | 35,6 Kb. | | #273168 |
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https://www.4gon.co.uk/solutions/introduction_to_802_11_wifi.php#:~:text=The%20WLAN%20(Wireless%20Local%20Area,physically%20connected%20via%20a%20cable.
An Introduction to 802.11 (Wi-Fi) Technologies
The WLAN (Wireless Local Area Network) protocol, IEEE 802.11, allows wireless and mobile network access to a network infrastructure. Before the 802.11b protocol (which was coined Wi-Fi) was widely adopted in the early 2000s, to get high speed network access to your LAN you had to be physically connected via a cable. The family of 802.11 protocols are made up of an arrangement of over-the-air modulation techniques that use the same basic principles. The most widely used protocols are the 802.11b, 802.11g and 802.11n for 2.4GHz networks and the 802.11a, 802.11n and 802.11ac for 5GHz networks.
Wireless connections can replace wired infrastructure or extend existing networks
For applications in which it is impractical to lay cables or it is too costly, 802.11 Wireless Networks can be used in the following situations:
When connecting two networks in separate buildings with a critical obstacle obstructing you, an 802.11 WLAN connection can be used to avoid purchasing a leased line from a telecommunications vendor providing significant savings.
Temporary 802.11 WLAN networks can be set up instantly reducing deployment times for applications such as conventions.
802.11 WLAN networks do not require the laying of cables in homes and offices where aesthetics are critical.
Mobile computer users can connect to 802.11 WLAN networks in changing locations and always remain connected to the network without being near a network socket or router.
802.11 "Hot Spot" areas can provide internet access for the public in places such as airports, hotels and retail centres.
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