Final answer:
Network media refers to the channels used for data transmission, which include both physical cables, like copper or optic fibers, and radio waves for wireless communication networks.
Step-by-step explanation:
The items that are collectively referred to as network media are wires and radio waves. Network media is the channel or pathway through which data is transmitted from one location to another in a computer network.
This can include physical media like twisted-pair copper cable, coaxial cable, and fiber-optic cable, as well as wireless media that uses radio waves for transmitting data over the air, such as Wi-Fi and satellite communications.