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