ABSTRACT of WLAN-Wireless LAN
The term “Computer Network” to mean a collection of autonomous computers interconnected by a single technology .By this interconnection they are able to exchange information. Local Area Networks are privately owned networks within a single building or campus of few kilometers in size. In a traditional LAN we are connecting computers to the network through cables. But the wireless local area network (WLAN) is a flexible data communications system that can use either infrared or radio frequency technology to transmit and receive information over the air. Here each computer has a radio Modem and Antenna with which it can communicate with other systems. One important advantage of WLAN is the simplicity of its installation. Installing a wireless LAN system is easy and can eliminate the needs to pull cable through walls and ceilings. WLANs allow greater flexibility and portability than do traditional wired local area networks (LAN). 802.11 was implemented as the first WLAN standard. It is based on radio technology operating in the 2.4 GHz frequency and has a maximum throughput of 1 to 2 Mbps.
