Which type of network cabling is characterized by an inner copper core and metallic braid shield?

Coaxial cable is characterized by its construction, which consists of a central inner conductor made of copper and is surrounded by a metallic braid shield. This design helps to protect the cable from electromagnetic interference, making coaxial cables particularly effective for carrying high-frequency signals, such as those used in television and internet connections. The combination of the inner copper core for conduction and the outer shield for protection contributes to the cable's overall performance and reliability.

In contrast, fiber optic cables use glass or plastic fibers to transmit data as light, so they do not have a copper core or braid shielding. Twisted pair cable consists of pairs of insulated copper wires twisted together, primarily designed to reduce interference but does not incorporate a metallic braid. Ribbon cable is a flat, multi-conductor cable that typically lacks shielding and is used for connecting multiple points in a compact manner. Thus, the unique structure of coaxial cable is why it is the correct choice for this question.