How does Wi-Fi works?

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Datu Mohammad Dave K. Pantao

Many of us often wonder how how this masterpiece of technology really works. Most of people use WiFi as a prefered mode of internet connection all over the world because of the convenience it brings to us. You don’t need to have a wires and it is even much faster than broadband connections. Wireless technology has widely spread lately and you can get connected almost anywhere; at home, at work, in libraries, schools, airports, hotels and even in some restaurants. Wireless networking is known as Wi-Fi (Wireless Fidelity) or 802.11 networking.
To access this type of connection, one must have a wireless adapter on their computer. Wi-Fi provides wireless connectivity by emitting frequencies between 2.4GHz to 5GHz based on the amount of data on the network. Areas which are enabled with Wi-Fi connectivity are known as Hot Spots. One can use advanced softwares like Wirelessmon to detect and request connection to Hotspots. To start a Wireless connection, it is important that the wireless router is plugged into the internet connection and that all the required settings are properly installed.
A mobile device such as a laptop should have a wireless card or built-in adapter to be able to take advantage of using Wi-Fi. Newer laptops have built-in wireless cards; however, in older models you can use a wireless adapter to hook into a USB port or a wireless card that plugs into a PCI card slot. Desktop computers and printers that do not have wireless cards can also get USB wireless adapters to connect to the USB (Universal Serial Bus) ports. A desktop computer usually also has a PCI slot where a wireless card can plug in.
Like mobile phones, a Wi-Fi network makes use of radio waves to transmit information across a network. The computer should include a wireless adapter that will translate data sent into a radio signal. This same signal will be transmitted, via an antenna, to a decoder known as the router. Once decoded, the data will be sent to the Internet through a wired Ethernet connection. As the wireless network will work as a two-way traffic, the data received from the Internet will also pass through the router to be coded into a radio signal that will be receipted by the computer’s wireless adapter.
The typical range of a Wi-Fi network varies depending on the type of obstructions the radio signals encounter between connection endpoints. While 100 feet (30m) or more of range is typical, a Wi-Fi signal may fail to reach even half that distance if heavy obstructions exist on the radio signals’ path. Using special Wi-Fi range extender devices, an administrator can extend the reach of their network to overcome these obstructions and expand its range manyfold in other directions.
Wi-fi means a lot to us but it could also do harmful effects especially to the childrens whom are now on the trend. It would be easy to access restricted websites such as adultsite sites. Proper guidance of the parents and knowing the does and don’ts are in need upon using this technology.

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