At the
data link and physical layers
The
802.11 wireless Lan function is a set of data link and physical layers. Data
link layer or the MAC is responsible for effective link-link data transfer,
addressing, error detection and frame validation. Physical layer on the other
hand helps in placing bits on the network. Basically, all wireless and WI-FI
systems conform use these two layers to format and control data to conform with
802.11 wireless Lan standards
