The media which enable electromagnetic signals to be transmitted through free space is known as

The media which enable electromagnetic signals to be transmitted through free space is known as unguided media. Unguided media refers to any wireless communication technology that uses air or space as the medium for transmitting signals. Examples of unguided media include radio waves, microwave, and infrared radiation. These types of media are not confined to any physical structure or pathway and can travel through free space in any direction. In contrast, guided media, such as twisted pair cables or fiber optic cables, rely on physical pathways or structures to transmit signals. Intranet and Ethernet, on the other hand, are not types of media for transmitting signals through free space, but rather refer to computer networks and communication protocols used to transfer data within a network.