Describe the specific protocols and devices that operate at the physical layer of the OSI model and their importance in data transmission.

The Physical Layer, which makes up the bottom layer of the OSI (Open Systems Interconnection) model, is in charge of specifying the physical medium for data transmission as well as the essential features of the necessary hardware. It focuses on the straightforward transmission of bits over a physical medium and serves as the building block for more complex protocols and data transmission. We will discuss particular devices and protocols that function at the Physical Layer of the OSI model and their significance in data transmission in this response.