Question

22. Which type of cable consists of an inner copper core and a second conducting outer sheath?
(A) Twisted pair
(B) Coaxial
(C) Fiber-Optic
(D) Shielded Twisted Pair
23. In fiber optics, the signal is?
(A) Light wave
(B) Radio wave
(C) Infrared wave
(D) Very low-frequency
24. Which of the following primarily uses guided media?
(A) Cellular telephone system
(B) Local telephone system
(C) Satellite communications
(D) Radio broadcasting
25. Which of the following is not guided medium
(A) Twisted pair cable
(B) Coaxial cable
(C) Fiber Optic cable
(D) Atmosphere​

Answer 1

Answer:

22b coaxil 23 light wave