what is the wireless definition

Wireless is a technology in a variety of needs can be applied. Wi-Fi is also an alternative technology that is easy to implement in the workplace. Unlike the use of cable, wireless and high-mobility devices on the target moves, while it is in the range of wireless devices.

Wi-Fi is a wireless network and wireless, and only the right tools that can be connected together.
WI-FI technology, the Institute of Electrical and Electronics Engineers (IEEE) is defined:

IEEE 801.11a standard, with a frequency of 5 GHz at speeds of 54 Mbps and 300-meter indoor coverage.
IEEE 802.11b, with a frequency of 2.4 GHz, a speed of 11 Mbps and has 100 meters of the net.
yabg IEEE 802.11g with a frequency of 2.4 Ghz has a speed of 54 Mbps and 300 meters of the net.
IEEE 802.11n is the merger of the two frequencies of 2.4 GHz and 5 GHz (MIMO), can be used with multiple antennas and has a speed of 108 Mbps and reach further.

Wireless type used in wireless LANs

Special is a sample of the combination of two or more computers and other wireless leptop devices on a network drive without using a central data server or as an object. Such networks are very supportive portablelitas seem slow data transmission, especially when used for the use of more than two wireless devices. Networks of this kind is not good and really Bussy, whether the use of multiple devices.
Infrastructure is a model for many devices to integrate wireless devices. This method uses an Access Point, which is used as data centers, so that all wireless devices are connected not connected to each other, but to enter into the center of the device. But to establish the IP address of all computer equipment and must through the middle of the first device. This method has configured a network connection through the heavy and centralized.

Main components of the wireless devices are:

Access Point
Wireless LAN
Wireless Mobile / Destkop

Wireless Security

Output of the signal in a wireless network with the free frequency is transmitted, it can be captured and used by other users of wireless network users. This requires security in wireless media can be used only by the parties correctly. The method of security on wireless security are:

No Secource / Open allows this method mengguanakan all wireless devices can connect to the network, for use in a closed network of networks is very risky, but as the campus and in the office that have no basis comersil centralized data is strongly recommended.
Key actions used, this method allows the most important only authorized users can access the network.

The advantages of wireless networks

Low maintenance costs
Small-scale infrastructure
ApID development
Easy to install and cheap
Supports portability

The weakness of the wireless network

The cost of expensive equipment
Large Deley
no rules on the use of radio frequencies
terinterfensi easily by noise
Network of network capacity is much smaller than the media such as glass fiber
Data security is not guaranteed

If used on a large scale, is a wireless router can be very useful

Source :
www.clearwireless.org

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