IT-CRUISERS: Everything IT

In order to create a WLAN, a few basic components are required, which include the following; 1.The wireless client devices; equipped with a wireless Network Interface Card (wireless NIC) 2.The Access Points (AP) or control module 3.The wired LAN backbone The Wireless Client Devices PDA Laptop PC This simply refers to users’ devices such as desktop computer systems, laptop computers and mobile gadgets like the Personal Digital Assistants (PDAs) and smart phones. They have embedded wireless Network Interface Card (wireless NICs) which enables users to have access to the wireless network. The wireless NIC is a hardware device that connects a computer to a network so as to send and receive data. A wireless NIC has an antenna, either internal or external, while a wired NIC has a port (usually an RJ-45 port for cable connection). The cable connects the NIC to the network, thus establishing a link between the computer and the network. A wireless NIC performs same functio...

A wireless Local Area Network (WLAN) is a flexible data communication system implemented as an extension to or as an alternative for a wired LAN. Better still, it can be implemented as a unified architecture – which provides a seamless integration of the wired and wireless infrastructure. As the name suggests a wireless LAN is one that makes use of wireless transmission medium, i.e. wireless LAN transmits and receives data over air, and minimizing the need for the wired connection. It uses Radio Frequency technology, mostly operating at the 2.4 GHz or 5.0 GHz frequency bands depending on the particular WLAN standard used. For example, the IEEE 802.11g WLAN standard operates at the 2.4 GHz frequency, while the recently ratified IEEE 802.11n operates optimally at the 5.0 GHz frequency bands. By having a wireless Network Interface Card (wireless NIC) on a desktop computer, laptop computer or a hand-held mobile device such as a PDA, and a device called Access Point (AP), it is possible to...