A communications medium is a channel; there are three types of wired communications media.The one consisting of two strands of insulated copper wire,used by tradition telephone systems,is known as ________.
A) twisted-pair
B) coaxial
C) fiber-optic
D) straight wire

Question

Quizplus · Accepted Answer

Twisted-pair is the type of wired communications medium consisting of two strands of insulated copper wire, which is commonly used by traditional telephone systems. Coaxial and fiber-optic cables are other types of wired communications media. Straight wire is not a type of wired communications medium.

A Communications Medium Is a Channel; There Are Three Types