Which layer of the OSI framework is the bottommost layer, which deals with the transmission of data between devices in binary?
1. Application
2. Data link
3. Physical
4. Transport
3. Physical layer
The bottommost layer of the OSI framework, which deals with the transmission of data between devices in binary, is the Physical layer. This layer is responsible for the actual physical transmission of raw bits over a communication channel. It defines specifications for the cables, connectors, voltages, and other physical aspects of data transmission.
To determine this, you can refer to the OSI model. The OSI (Open Systems Interconnection) model is a conceptual framework that standardizes the functions of a communication system into seven layers. These layers are numbered from the bottom (layer 1) to the top (layer 7). By understanding the functions of each layer, you can determine which layer deals with the transmission of binary data between devices. The Physical layer, being the first layer at the bottom, handles the actual transmission of binary data over the physical medium.