Last Updated on March 30, 2022 by Admin 3
Why are coaxial cables called “coaxial”?
- it includes two physical channels that carries the signal surrounded (after a layer of insulation) by another concentric physical channel, both running along the same axis.
- it includes one physical channel that carries the signal surrounded (after a layer of insulation) by another concentric physical channel, both running along the same axis
- it includes two physical channels that carries the signal surrounded (after a layer of insulation) by another two concentric physical channels, both running along the same axis.
- it includes one physical channel that carries the signal surrounded (after a layer of insulation) by another concentric physical channel, both running perpendicular and along the different axis
Explanation:
Coaxial cable is called “coaxial” because it includes one physical channel that carries the signal surrounded (after a layer of insulation) by another concentric physical channel, both running along the same axis.
The outer channel serves as a ground. Many of these cables or pairs of coaxial tubes can be placed in a single outer sheathing and, with repeaters, can carry information for a great distance.
Source: STEINER, Kurt, Telecommunications and Network Security, Version 1, May 2002, CISSP Open Study Group (Domain Leader: skottikus), Page 14.