Communication between computers using standard telephone service.requires a change to an a long signal, is most efficient,produces little noise and few disturbances, all of the above

Answer 1

All of the above statements are true. When computers communicate using standard telephone service, the data is converted into an analog signal, which is typically a long continuous waveform. This conversion allows the data to be transmitted over telephone lines efficiently. Additionally, the analog signal is less susceptible to noise and disturbances, ensuring a reliable communication process.