Marilla is connecting her wireless headphones to her smartphone using Bluetooth. What layer of the OSI framework is being used when the radio waves facilitate the Bluetooth connection?
1. Session
2. Presentation
3. Physical
4. Application
3. Physical
The correct answer is: 3. Physical
The physical layer of the OSI (Open Systems Interconnection) framework is responsible for transmitting raw data bits over a physical medium, such as radio waves. In this case, the radio waves used to facilitate the Bluetooth connection between Marilla's wireless headphones and her smartphone fall under the physical layer, which deals with the actual transmission of data.