Which type of media uses electromagnetic waves that are generated by lasers, is often used in campus backbones, and is capable of transmitting to a distance of 60 kilometers?
A: shielded twisted-pair cable
B: coaxial cable
C: multimode fiber-optic cable
D: single-mode fiber-optic cable
Answer:D
Which type of media uses electromagnetic waves that are generated by lasers, is often used in campus backbones, and is capable of transmitting to a distance of 60 kilometers?
A: shielded twisted-pair cable B: coaxial cable C: multimode fiber-optic cable D: single-mode fiber-optic cable