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| Wifi signal |
What Does WiFi Stand For | How Does WiFi Network Work | What is Wifi
Everyone hared the Word Wifi but Everyone want to Know What is Wifi ? after knowing This They Definitely Want to know What Does WiFi Stand For Then How Does WiFi Network Work.
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| Wifi connected With The Network |
What is Wifi?
WiFi is a technology that uses radio waves to provide network connectivity. A WiFi connection is established using a wireless adapter to create hotspots - areas in the vicinity of a wireless router that are connected to the network and allow users to access internet services. Once configured, WiFi provides wireless connectivity to your devices by emitting frequencies between 2.4GHz - 5GHz, based on the amount of data on the network.
What Does Wifi Stand For ?
WiFi refers to the 802.11 wireless networking standard that is promulgated in the year 1997 by the
IEEE(Institute of Electrical and Electronics Engineers). Every time a standard is updated, a new letter is added to the end of the
designation. This normally equates to an increase in potential bandwidth and
security protocols with the standard. For example, WiFi started seeing a significant
increase in usage starting with the 802.11B version of the protocol and has continued to be upgraded since Then
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How Does Wifi Network Work?
Wireless networks use radio frequency waves that are transmitted in the 2.4 GHz to
5 GHz spectrum that are very similar to television or cell phone signal
transmissions. When your computer is connected to a wireless network, its wireless
adapter will encode information into a radio signal and then transmit it using the
wireless antenna that is normally built into the screen of new laptops. Wireless
signals can also be received via an external antenna plugged into the USB slot of a
computer. The WiFi router for the network then receives this information, decodes
it, and sends to the Internet through a wired, high-speed connection.
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What are The Available Wifi Network Standard?
The 802.11 wireless networking standard has several implementations in use today.
The first is the 802.11 a standard that operates in the 5 GHz spectrum and is rated
at up to 54 Mbps. It also uses an orthogonal frequency-division (OFDM) multiplexing
system that reduces interference, but increases the complexity of the hardware
required to work a network supporting this standard. The least expensive standard
to operate is the 802.11B which originally made it the most popular WiFi standard
to implement. The 802.11B standard is rated at 11 Mbs and works in the 2.4 GHz
RF band.
The 802.11g standard has become more popular in recent years, handling 54 Mbs
of data at the 2.4 GHz spectrum. It uses the same OFDM encoding as the 802.11a
standard while implementing more strict security protocols. The 802.11n standard
is one of the newer options on the market which is rated at speeds of up to 140
Mbs and has the latest security protocols.
How do You Connect To a Wifi Network?
In order to connect to a wireless network or WiFi hotspot, the computer must have
a wireless adapter. Most new computers have this built in, but you still need to
check. If the PC does not have it, a PCI or USB adapter can be purchased in most
electronics stores. Once the wireless adapter is installed, it will be able to
automatically detect available wireless networks in range of the computer. On a
Windows computer, you can double click the “Network” icon in the Windows System
Tray and then select “Show Available Networks” menu option. The WiFi networks
that are in range of the computer will be displayed, and the user can click the
network he/she wants to join. However, if a network is labeled as being secure, a
pass-phrase or password established by the network administrator will be needed
to make the connection.
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| Wifi Connected Network |
Wireless Network Setup:
One of the most popular ways to use wireless network is setting up a WiFi network
to share a home Internet connection. Anyone who already has a high-speed
Internet connection can set up WiFi by purchasing a wireless router that will share
the cable or DSL modem connection. The majority of wireless routers will have a
range of approximately 100 feet or just over 30 meters. Once the router is plugged
into the power source and connected to the DSL or cable modem, an interface
screen will show up and it will allow the user to do the following:
Set the Service Set Identifier (SSID)
Channel (Many users will want to change this from the default setting to avoid
interference, especially if living in an apartment where many other users could
have routers setup on the same channel).
Security options to include method of encryption of wireless data and the
network password.
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| Wifi Citi |
Wireless network security options:
There are several ways to secure a wireless network. A popular way to encrypt a
wireless network was to use the Wired Equivalency Privacy (WEP) security
standard. This is still in use today, but has been found to have security
vulnerabilities that require the network administrator to change security settings
more frequently than with newer security standards. WPA (WiFi Protected Access) is
now incorporated into the 802.11i wireless standard and uses temporary key
integrity protocol (TKIP) encryption. A third option for network admins is to use
Media Access Control (MAC) address filtering that requires each computer to be
manually registered to have access to the network. The overall usability of the
network decreases with this method. The security levels may be higher, but still not
good enough, since MAC addresses can be hacked.
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