Which of the following are two common media used in networks?

Fiber is a common media used in networks due to its ability to transmit data over long distances at high speeds with minimal signal loss. Fiber optic cables use light signals to carry data, which allows for greater bandwidth and faster transmission rates compared to other types of cabling. This makes fiber an ideal choice for backbone connections in enterprise networks and for internet service providers.

While copper, coaxial, and wireless are also prevalent in networking, each has specific use cases. Copper cabling, such as twisted pair cables, is commonly used for short-distance data transmission, especially in local area networks (LANs). Coaxial cables have been traditionally used for cable television and internet services. Wireless media relies on radio waves, which can be more susceptible to interference and typically have lower speeds and range compared to fiber optics.

Therefore, fiber stands out for its high performance and is a fundamental component of modern networking infrastructure, making it a correct choice for the types of media commonly used in networks.