Which statement best describes the use of fiber in transport of information?

• A. True
• B. False
• C. Not sure
• D. Depends on application

Answer: (A)

Fiber optics transport information by guiding light through a transparent strand, using total internal reflection to keep the light confined over long distances. This makes it an ideal medium for carrying data because light can be modulated to represent information, and fiber offers very high bandwidth, low signal loss, and immunity to electromagnetic interference. Because of these advantages, fiber is widely used in telecommunications, data networks, and many other information transport applications, so the statement describing fiber as a means to transport information is true. In practice, other media exist, but the core idea—that fiber can carry information efficiently—remains accurate.