Signals can be either analogue or digital. In an analogue signal the signal is varied continuously w...: ответ на тест 1006871 - Английский язык

Signals can be either analogue or digital. In an analogue signal, the signal is varied continuously with respect to the information. In a digital signal, the information is encoded as a set of discrete values (for example ones and zeros). During transmission the information contained in analogue signals will be degraded by noise. Conversely, unless the noise exceeds a certain threshold, the information contained in digital signals will remain intact. This noise resistance represents a key advantage of digital signals over analogue signals.
Прочитайте текст и определите, какой из заголовков соответствует тексту.