GUIDED MEDIA Guided media, which are those that provide a conduit from one device to another, include twisted-pair cable, coaxial cable, and fiber-optic cable. Twisted-Pair Cable Coaxial Cable Fiber-Optic Cable Topics discussed in this section:
7.5 Figure 7.3 Twisted-pair cable Metallic copper conductors that accepts and transport signals in the form of electric current.
UNGUIDED MEDIA: WIRELESS Unguided media transport electromagnetic waves without using a physical conductor. This type of communication is often referred to as wireless communication. Radio Waves Microwaves Infrared Topics discussed in this section:
7.22 Figure 7.17 Electromagnetic spectrum for wireless communication