At which layers of the osi model do 802.11 wireless lans function

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

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