Wireless technology is getting popular today. You must have heard about Wi-Fi. So, what exactly is it? Wi-Fi is a shorthand for Wireless Fidelity. This technology built over 802.11 standard. The Wi-Fi term is promoted by Wireless Ethernet Compatibility Alliance (WECA), an industry standard group promoting interoperability among 802.11 devices. The 802.11 standard offers two ways for configuring a wireless network, ad hoc and infrastructure.
In Ad Hoc mode or Peer to Peer Workgroup, computers are brought together as needed thus the network has no structure or even fixed points. Each node is able to set up to communicate with each other node. We don't need access point. This mode enables you to quickly set up a small wireless workgroup and allows workgroup members to exchange data or share printers. In this configuration, network packets are directly sent and received by the intended transmitting and receiving stations. As long as the stations are within range of one another, this is the easiest and least expensive way to set up a wireless network.
In infrastructure mode, wireless LAN can operate by using a wireless access point. This mode lets you connect wirelessly to wireless network devices within a fixed range or area of coverage. In infrastructure mode, the wireless access point converts airwave data into wired Ethernet data, acting as a bridge between the wired LAN and wireless clients. Now, how can you interact to wireless nodes? It is because the access point has one or more antennas that allow you to interact with wireless nodes. As a mobile computing device moves out of the range of one access point, it moves into the range of another. As a result, wireless clients can freely roam from one access point domain to another and still maintain seamless network connection.
The maximum data rate for the 802.11g wireless link is 54 Mbps, but it will automatically back down from 54 Mbps when the radio signal is weak or when interference is detected.
access point vs router
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