Which type of communication is less susceptible to interference and is used in various wireless technologies?

Digital communication is less susceptible to interference compared to other types of communication. This is primarily due to the way digital signals are processed and transmitted. In digital communication, information is encoded into binary digits (0s and 1s), which allows for easier error detection and correction. The discrete nature of digital signals makes it easier to distinguish between valid signals and noise, even in the presence of interference.

Moreover, many wireless communication technologies, such as Wi-Fi, Bluetooth, and cellular networks, utilize digital communication because it allows for efficient data compression, encryption, and reliable transmission over long distances. Digital signals can be regenerated more effectively, which helps to maintain the integrity of the communication even in challenging environments where interference might be present.

In contrast, analog communication is more vulnerable to noise and distortion because it continuously varies in amplitude or frequency. This continuous variation makes it difficult to filter out unwanted signals and increases the chance of degradation in signal quality. Serial communication and parallel communication refer more to data transmission methods and do not specifically address susceptibility to interference in the same way that the distinction between analog and digital does.