Which type of network cable carries a constant electrical charge once connected to devices on both ends?

The correct choice refers to a general category of cable that can carry a constant electrical charge when connected to devices on both ends. Cables like standard Ethernet and coaxial cables can also carry electrical signals, but the term "cable" encompasses a wide range of types, including those designed specifically for power transmission as well as data.

In the context of this question, options such as fiber optic cable are designed for transmitting data using light signals rather than electrical current, meaning they do not carry a charge. Standard Ethernet cables are mainly used for networking purposes and can carry power through Power over Ethernet (PoE) technology but are not defined primarily by their capability to maintain a constant electrical charge.

Since the provided answer focuses on the most general and applicable definition, it emphasizes the cable's ability to transmit electrical charge, which is a function that can apply to various types of cables including DC power cables or those specifically designed for power delivery. Thus, the response aligns well with the broader interpretation of how cables transfer energy.