Question

What device turns digital data into an analog signal for sending it over the telephone line, and then turns it back into digital data when it reaches the other end of the connection

Answer 1

The correct answer is D.

Step-by-step explanation:

In electronics, a digital-to-analog converter (DAC, D/A, D–A, D2A, or D-to-A) is a function that converts digital data (usually binary) into an analog signal (current, voltage, or electric charge). An analog-to-digital converter (ADC) performs the reverse function.