Which cable type uses copper conductors twisted together to reduce interference?

Twisted-pair cable is designed with pairs of copper conductors twisted together, which significantly reduces electromagnetic interference (EMI) and crosstalk between the pairs. The twisting of the wires creates a balanced transmission line that counteracts noise and helps maintain the integrity of the signals transmitted over the cable. This design is particularly effective in networking scenarios, making twisted-pair cable a popular choice for both voice and data communications in various applications, such as Ethernet networks.

Coaxial cable, while it also carries data effectively, utilizes a single central conductor with insulation surrounded by a metallic shield, which is different from the structure and interference-reducing method found in twisted-pair cables. Fiber optic cable relies on light transmission through glass or plastic fibers and does not involve copper conductors at all, thus not fitting the premise of the question. Ribbon cable consists of multiple conductors arranged in a flat ribbon-like configuration and is typically used for internal connections in devices rather than for reducing interference in communications.