802.11n is a wireless networking standard that was introduced to improve the speed and range of Wi-Fi connections. It operates in both the 2.4 GHz and 5 GHz frequency bands, allowing for greater flexibility and reduced interference. With the use of multiple antennas, known as MIMO (Multiple Input Multiple Output), 802.11n can transmit and receive more data simultaneously, enhancing overall performance. This standard can achieve data transfer rates of up to 600 Mbps, significantly faster than its predecessor, 802.11g. 802.11n is backward compatible with earlier Wi-Fi standards, making it easier for users to upgrade their networks without replacing all existing devices.