Which component is often found in composite cables?

Composite cables are designed to combine different types of conductors within a single cable, usually for applications where both electrical and optical transmission is required. One of the primary features of composite cables is the inclusion of copper conductors, which allow for the transmission of electrical signals alongside fiber optic strands that carry light signals.

Copper conductors are essential because they offer effective electrical conductivity for power and data transmission. They are commonly utilized in conjunction with optical fibers that provide high-speed data transfer capabilities, hence enhancing the cable's versatility and performance. In scenarios where both data communication and power supply are needed, having copper within a composite cable is particularly beneficial.

Other options do not accurately represent the common components of composite cables. For instance, while plastic insulation may be present in various types of cables, it does not constitute the conductor itself. Furthermore, optical fibers can exist without copper, but this description does not align with the composite structure that typically includes both types of conductors. Lastly, aluminum shielding is not a standard feature of composite cables; rather, it is generally used in specific applications for additional protection or grounding, but does not pertain to the core function of a composite cable.

Thus, the presence of copper conductors is a defining characteristic of composite cables, making