Tuesday, 22 January 2019
Wireless Networking
Wireless Network
Wireless Network means that network which has not need any wire for communication or which can transfer data and files wirelessly. In networking terminology,
wireless network can be define as to any computer network
where there is no requirement of physical wired connection between sender and receiver, but
rather the network is connected by radio waves or by microwaves to maintain
communication. Wireless networking specific equipment are used such as NICs, APs and routers in place of
wires for connectivity and which give same or high speed .
Some Wireless Technology
Infrared Technology
Mobile phone
Wi-Fi
Bluetooth
Radio frequency
Types
Of Wireless Network
WLANS: Wireless Local
Area Networks
wireless LANs use radio frequencies that are radiated into the air from an antenna that creates radio waves. These waves can be absorbed,refractedor reflected by walls,water or also by any metal surfaces because of that it resulting in low signal strength.It means it got affected by surrounding environment.WLANS is temporary network can be formed by a
small number of users without the need of an access point; given that they do
not need access to network resources.
WPANS: Wireless
Personal Area Networks
The two current technologies for wireless
personal area networks are InfraRed (IR) and Bluetooth (IEEE 802.15). These
will allow the connectivity of personal devices within an area of about 30
feet. However, IR requires a direct line of site and the range is less.
WMANS: Wireless
Metropolitan Area Networks
This technology allows the connection of
multiple networks in a metropolitan area such as different buildings in a city,
which can be an alternative or backup to laying copper or fiber cabling.
WWANS: Wireless Wide
Area Networks
These types of networks can be maintained over
large areas, such as cities or countries, via multiple satellite systems or
antenna sites looked after by an ISP. These types of systems are referred to as
2G (2nd Generation) systems.
Wi-Fi
Wi-Fi is a wireless networking device thats gives a wireless network between computers and other devices to communicate . It describes network components that
are based on one of the 802.11 standards developed by the IEEE and adopted by
the Wi-Fi Alliance. Examples of Wi-Fi standards, in chronological order,
include:
Standard Maximum speed
802.11a 54Mbps
802.11b 11
802.11g 54
802.11n 150
802.11ac 800Mbps
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