What is the primary purpose of using fiber optic cables in networking?

The primary purpose of using fiber optic cables in networking is to improve signal quality. Fiber optic cables utilize light to transmit data, which allows for significantly higher bandwidths and faster data transmission rates compared to traditional copper cables. This results in enhanced signal quality, as fiber optics are less susceptible to electromagnetic interference and signal degradation over long distances. The ability to maintain high fidelity of the signal is crucial for high-speed data communication, making fiber optics the preferred choice in environments where performance is critical.

While fiber optic cables can also have benefits such as lighter weight and increased security due to the difficulty of tapping into the fiber without detection, the primary advantage lies in their capacity to deliver superior signal integrity, making option B the most appropriate answer in this context. The installation costs can vary, but the focus here is predominantly on the signal quality and performance capabilities that fiber optics provide.