This speaker could be an instructor, a politician on the television, or even a radio or television commercial. What barriers were there to the listening process?

Electromagnetic interference and noise from the transmitting or receiving device.

Explanation:

Communication involves four processes, they are; encoding, sending, decoding, and feedback. A message, during this process of communication, can be altered, this is known as noise.

Telecommunication is simply communication between long distances. The effect of noise is more pronounced and can be noticed by listeners. These noises are produced by the transmitter and electromagnetic signals or waves of other transmitting devices.

answer; insolated i/o uses separate memory space,and on the other hand memory mapped i/o uses memory from the main