CompTIA Security+ Exam Prep

Answer: B - Analog transmission signals are continuously varying electromagnetic waves. These waves are carried over air, water, twisted-pair cable, coaxial cable, and fiber-optic cable. Through a process of modulation, data are combined with a carrier signal of a specified frequency. The carrier signals provide many radio station frequency ranges and communication channels. Each radio station is given a certain carrier signal and frequency to use for transmissions. This is different from digital signals, which are binary digits as electrical pulses.