Which statement is true regarding analog signals compared to digital signals?

In the context of comparing analog signals to digital signals, the statement that analog signals travel farther than digital signals can be considered in a specific light. Analog signals are continuous signals that can represent changes in information, such as sound or light, without discrete steps. They can propagate over longer distances in certain scenarios, especially in the case of traditional radio frequency transmissions or telephony, given that analog signals do not need the same kind of signal processing and regenerating that digital signals may require.

However, it's important to note that while analog signals can indeed travel long distances, they are subject to degradation and noise interference as they do so. Digital signals, on the other hand, can be amplified and regenerated more effectively, which can allow them to maintain integrity over longer distances than would be practical for analog signals in many modern communication systems.

In contrast, other answers present statements that are not universally accurate. Digital signals can be more reliable due to their resistance to noise and interference, but it's crucial to assess specific use cases to determine reliability. Encryption and bandwidth usage also vary based on particular technologies and implementations. Thus, claiming that analog signals can be easily encrypted is misleading, as encryption is generally more straightforward with digital data.