What is the primary function of the Physical Layer in the OSI Model?

This layer does not deal with logic or data structures. It simply converts digital data into signals (electrical, optical, or radio) that can travel through physical media.

Key tasks of the Physical Layer:

• Convert binary data into physical signals


• Transmit signals through cables, fiber, or wireless


• Define hardware standards like cables, connectors, and pin layouts


• Control how bits are sent and received at the hardware level

This layer is essential for actual communication between devices. Without it, data would not leave the device to reach another system.