Analog copper cables engineered with a metal shield to block signal interference are called what?

Analog copper cables engineered with a metal shield to block signal interference are called what?

• A. Coaxial cables
• B. Fiber cables
• C. Cat5e
• D. RJ45

Answer: (A)

Shielded coaxial cables consist of a central copper conductor surrounded by a dielectric insulator and a metallic shield, all covered by an outer jacket. The metal shield blocks external electrical interference, keeping the signal strong and clear, which is especially important for analog signals traveling at higher frequencies. That combination—a copper center conductor with a surrounding shield and insulation—is the defining feature of coaxial cable. The other options refer to different technologies: fiber cables carry light through glass or plastic and are not copper; Cat5e is a type of twisted-pair copper Ethernet cable (often unshielded); RJ45 is a connector, not a cable type by itself.

Shielded coaxial cables consist of a central copper conductor surrounded by a dielectric insulator and a metallic shield, all covered by an outer jacket. The metal shield blocks external electrical interference, keeping the signal strong and clear, which is especially important for analog signals traveling at higher frequencies. That combination—a copper center conductor with a surrounding shield and insulation—is the defining feature of coaxial cable. The other options refer to different technologies: fiber cables carry light through glass or plastic and are not copper; Cat5e is a type of twisted-pair copper Ethernet cable (often unshielded); RJ45 is a connector, not a cable type by itself.