Which are the common transmission media used in digital communication system?
A. Coaxial cable
B. Twisted copper cable
C. Radio frequency bands
D. All of the mentioned
Answer:A
Which are the common transmission media used in digital communication system?
A. Coaxial cable B. Twisted copper cable C. Radio frequency bands D. All of the mentioned
Explanation: Some of the commonly used physical transmission media are twisted copper cable, good quality coaxial cable and radio frequency bands.