Coaxial Cabling
A single copper core surrounded by shielding, commonly used for cable internet and broadband.
Coaxial cable has a central copper conductor surrounded by a dielectric insulator, a braided metal shield, and an outer jacket. That shielding resists electromagnetic interference, suiting coax to broadband runs. Today it is most associated with cable internet delivered via DOCSIS (Data Over Cable Service Interface Specification), riding the same plant as cable television. On the Network+ exam, watch the connectors: F-type is standard for DOCSIS cable modems, while BNC appears in legacy 10BASE2 (Thinnet) Ethernet. Modern Ethernet runs on twisted-pair or fiber, so coax’s active role is almost entirely last-mile broadband.
PlayPrepHQ study notes are written and reviewed against primary exam sources. How we create & review content →