What type of connection is categorized under the Physical Layer in the OSI Model?

The Physical Layer of the OSI Model is responsible for the physical connection between devices, which includes the actual hardware technologies that facilitate the transmission of data over a network. This encompasses all sorts of transmission media such as copper cables, fiber optic cables, and wireless links, which are crucial for establishing the physical pathway through which data can travel.

This layer deals with the physical characteristics of the network, including aspects like signal transmission, voltage levels, timing, and the types of connectors used for transmission. Therefore, the mention of copper, fiber, or wireless links aligns perfectly with the functions of the Physical Layer.

In contrast, database connections, application logic connections, and server-client connections fall under higher layers of the OSI model, where the focus shifts to data transfer, communication protocols, and application-specific interactions rather than the physical means of connectivity.